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• How are benchmarks for multiple cores calculated?

  - by B Seven

  I found this site to compare CPU's. http://www.cpubenchmark.net/high_end_cpus.html What wasn't clear is how the benchmark for multiple core processors is calculated. If one CPU has 4 cores (such as Intel Core i7 which comes in 2, 4, and 6 core versions: http://en.wikipedia.org/wiki/Intel_Core_i7#Core_i7), does that mean that the benchmark should be double that of the version that has 2 cores (assuming the same clock frequency)?

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• Reason behind system power usage?

  - by user28565

  Hi, when the number of applications running in a pc increases, the power consumed by the PC is also increasing. Is this correct? I think the reason behind this is CPU. Please let me know what role the CPU plays for more power usage. Thanks, Kavi

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• Building a backup server

  - by user8181

  One of my older motherboards broke and I'm planning to use the remaining power supply, hard drive and case to build a backup server. I want to buy a new motherboard and CPU that can be used 24x7 and wont break down in a few months. So the question is, do you have any recommendations on any reliable motherboards and CPU for a backup server? Processing power is not a huge issue.

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• How can a single threaded application like Excel 2003 take more than 50% of a hyper-threaded or dual

  - by Lunatik

  I'm waiting for Excel to finish a recalculation and I notice that the CPU usage as reported by Task Manager occasionally spikes to 51% or 52% on a Pentium 4 with hyper-threading. How is a single-threaded application like Excel 2003 doing this? Is it just a rounding/estimation error on the part of Task Manager? Or is it something to do with HT allocation i.e. I wouldn't see this happening on a genuine dual-core or dual-CPU machine?

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• Why is 'System' process at 100%?

  - by ripper234

  On Windows 7, the 'system' process is taking up 100% CPU (well 50% on a duel core) for a rather long time. Its CPU usage doesn't seem to drop at all. How can I diagnose this problem? What could be the cause? I don't see any other problems with the system and am using an up-to-date AVG, so I don't yet suspect a maelware.

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• SAS Expanders vs Direct Attached (SAS)?

  - by jemmille

  I have a storage unit with 2 backplanes. One backplane holds 24 disks, one backplane holds 12 disks. Each backplane is independently connected to a SFF-8087 port (4 channel/12Gbit) to the raid card. Here is where my question really comes in. Can or how easily can a backplane be overloaded? All the disks in the machine are WD RE4 WD1003FBYX (black) drives that have average writes at 115MB/sec and average read of 125 MB/sec I know things would vary based on the raid or filesystem we put on top of that but it seems to be that a 24 disk backplane with only one SFF-8087 connector should be able to overload the bus to a point that might actually slow it down? Based on my math, if I had a RAID0 across all 24 disks and asked for a large file, I should, in theory should get 24*115 MB/sec wich translates to 22.08 GBit/sec of total throughput. Either I'm confused or this backplane is horribly designed, at least in a perfomance environment. I'm looking at switching to a model where each drive has it's own channel from the backplane (and new HBA's or raid card). EDIT: more details We have used both pure linux (centos), open solaris, software raid, hardware raid, EXT3/4, ZFS. Here are some examples using bonnie++ 4 Disk RAID-0, ZFS WRITE CPU RE-WRITE CPU READ CPU RND-SEEKS 194MB/s 19% 92MB/s 11% 200MB/s 8% 310/sec 194MB/s 19% 93MB/s 11% 201MB/s 8% 312/sec --------- ---- --------- ---- --------- ---- --------- 389MB/s 19% 186MB/s 11% 402MB/s 8% 311/sec 8 Disk RAID-0, ZFS WRITE CPU RE-WRITE CPU READ CPU RND-SEEKS 324MB/s 32% 164MB/s 19% 346MB/s 13% 466/sec 324MB/s 32% 164MB/s 19% 348MB/s 14% 465/sec --------- ---- --------- ---- --------- ---- --------- 648MB/s 32% 328MB/s 19% 694MB/s 13% 465/sec 12 Disk RAID-0, ZFS WRITE CPU RE-WRITE CPU READ CPU RND-SEEKS 377MB/s 38% 191MB/s 22% 429MB/s 17% 537/sec 376MB/s 38% 191MB/s 22% 427MB/s 17% 546/sec --------- ---- --------- ---- --------- ---- --------- 753MB/s 38% 382MB/s 22% 857MB/s 17% 541/sec Now 16 Disk RAID-0, it's gets interesting WRITE CPU RE-WRITE CPU READ CPU RND-SEEKS 359MB/s 34% 186MB/s 22% 407MB/s 18% 1397/sec 358MB/s 33% 186MB/s 22% 407MB/s 18% 1340/sec --------- ---- --------- ---- --------- ---- --------- 717MB/s 33% 373MB/s 22% 814MB/s 18% 1368/sec 20 Disk RAID-0, ZFS WRITE CPU RE-WRITE CPU READ CPU RND-SEEKS 371MB/s 37% 188MB/s 22% 450MB/s 19% 775/sec 370MB/s 37% 188MB/s 22% 447MB/s 19% 797/sec --------- ---- --------- ---- --------- ---- --------- 741MB/s 37% 376MB/s 22% 898MB/s 19% 786/sec 24 Disk RAID-1, ZFS WRITE CPU RE-WRITE CPU READ CPU RND-SEEKS 347MB/s 34% 193MB/s 22% 447MB/s 19% 907/sec 347MB/s 34% 192MB/s 23% 446MB/s 19% 933/sec --------- ---- --------- ---- --------- ---- --------- 694MB/s 34% 386MB/s 22% 894MB/s 19% 920/sec 28 Disk RAID-0, ZFS 32 Disk RAID-0, ZFS 36 Disk RAID-0, ZFS More details: Here is the exact unit: http://www.supermicro.com/products/chassis/4U/847/SC847E1-R1400U.cfm

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• need assistance with my.cnf - 1500% CPU usage

  - by Alan Long

  I'm running into a few issues with our new database server. It is a HP G8 with 2 INTEL XEON E5-2650 processors and 32GB of ram. This server is dedicated as a MySQL server (5.1.69) for our intranet portal. I have been having issues with this server staying alive - I notice high CPU usage during certain times of day (8% ~ 1500%+) and see very low memory usage (7 ~ 15%) based on using the 'top' command. When the CPU usage passes 1000%, that is when the app usually dies. I'm trying to see what I'm doing wrong with the config file, hopefully one of the experts can chime in and let me know what they think. See below for my.cnf file: [mysqld] default-storage-engine=InnoDB datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock #user=mysql large-pages # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 max_connections=275 tmp_table_size=1G key_buffer_size=384M key_buffer=384M thread_cache_size=1024 long_query_time=5 low_priority_updates=1 max_heap_table_size=1G myisam_sort_buffer_size=8M concurrent_insert=2 table_cache=1024 sort_buffer_size=8M read_buffer_size=5M read_rnd_buffer_size=6M join_buffer_size=16M table_definition_cache=6k open_files_limit=8k slow_query_log #skip-name-resolve # Innodb Settings innodb_buffer_pool_size=18G innodb_thread_concurrency=0 innodb_log_file_size=1G innodb_log_buffer_size=16M innodb_flush_log_at_trx_commit=2 innodb_lock_wait_timeout=50 innodb_file_per_table #innodb_buffer_pool_instances=4 #eliminating double buffering innodb_flush_method = O_DIRECT flush_time=86400 innodb_additional_mem_pool_size=40M #innodb_io_capacity = 5000 #innodb_read_io_threads = 64 #innodb_write_io_threads = 64 # increase until threads_created doesnt grow anymore thread_cache=1024 query_cache_type=1 query_cache_limit=4M query_cache_size=256M # Try number of CPU's*2 for thread_concurrency thread_concurrency = 0 wait_timeout = 1800 connect_timeout = 10 interactive_timeout = 60 [mysqldump] max_allowed_packet=32M [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid log-slow-queries=/var/log/mysql/slow-queries.log long_query_time = 1 log-queries-not-using-indexes we connect to one database with 75 tables, the largest table has 1,150,000 entries and the second largest has 128,036 entries. I have also verified that our PHP queries are optimized as best as possible. Reference - MySQLtuner: >> MySQLTuner 1.2.0 - Major Hayden <[email protected]> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.1.69-log [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: -Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in InnoDB tables: 420M (Tables: 75) [!!] Total fragmented tables: 75 -------- Security Recommendations ------------------------------------------- [!!] User '[email protected]' has no password set. -------- Performance Metrics ------------------------------------------------- [--] Up for: 1h 14m 50s (8M q [1K qps], 705 conn, TX: 6B, RX: 892M) [--] Reads / Writes: 68% / 32% [--] Total buffers: 19.7G global + 35.2M per thread (275 max threads) [!!] Maximum possible memory usage: 29.1G (93% of installed RAM) [OK] Slow queries: 0% (472/8M) [OK] Highest usage of available connections: 66% (183/275) [OK] Key buffer size / total MyISAM indexes: 384.0M/91.0K [OK] Key buffer hit rate: 100.0% (173 cached / 0 reads) [OK] Query cache efficiency: 96.2% (7M cached / 7M selects) [!!] Query cache prunes per day: 553614 [OK] Sorts requiring temporary tables: 0% (3 temp sorts / 1K sorts) [!!] Temporary tables created on disk: 49% (3K on disk / 7K total) [OK] Thread cache hit rate: 74% (183 created / 705 connections) [OK] Table cache hit rate: 97% (231 open / 238 opened) [OK] Open file limit used: 0% (17/8K) [OK] Table locks acquired immediately: 100% (432K immediate / 432K locks) [OK] InnoDB data size / buffer pool: 420.9M/18.0G -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance MySQL started within last 24 hours - recommendations may be inaccurate Reduce your overall MySQL memory footprint for system stability Increasing the query_cache size over 128M may reduce performance Temporary table size is already large - reduce result set size Reduce your SELECT DISTINCT queries without LIMIT clauses Variables to adjust: *** MySQL's maximum memory usage is dangerously high *** *** Add RAM before increasing MySQL buffer variables *** query_cache_size (> 256M) [see warning above] Thanks in advanced for your help!

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• Wifi range issues and intermittent dropouts, Thinkpad Edge

  - by jimbo

  If I am more than a couple of metres from my access point (and I'm seeing this across various APs) with my newish Thinkpad Edge 15, running 10.10, the wifi performance becomes ... flaky. When this is happening, I see the following in dmesg, although I'm not sure if it's related: [ 2497.011099] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2502.012711] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2507.009254] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2512.008367] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2517.007467] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2522.006558] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2527.008157] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2532.007251] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2537.003838] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2542.005427] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2547.004496] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2552.003611] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded lspci -vvv has the following to say about my wireless adapter: 03:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000 Subsystem: Intel Corporation Centrino Wireless-N 1000 BGN Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 49 Region 0: Memory at f0500000 (64-bit, non-prefetchable) [size=8K] Capabilities: <access denied> Kernel driver in use: iwlagn Kernel modules: iwlagn If I get within a couple of metres of the access point, I still see that output in dmesg, but the connection stabilises. My question is threefold: how do I get better wifi range, what can/should I do about those messages in dmesg, and most crucially, are the two related? As ever let me know if there's other information that would help! Edit: I am using this machine in exactly the same locations I used my previous Thinkpad (T61) running various older versions of Ubuntu, so I definitely feel there is something wrong, rather me having unreasonable expectations of range!

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• Magento, NGINX, PHP-FPM, APC, MEMCACHED, 16gb Ram CentOS, Spiking PHP-FPM to 100% CPU

  - by Terry Dunford

  I have been trying to resolve my issue of spiking cpu caused by php-fpm processes. I've reduced the php-fpm config settings to: pm = ondemand pm.max_children = 12 pm.start_servers = 2 pm.min_spare_servers = 2 pm.max_spare_servers = 10 pm.max_requests = 500 php_admin_value[memory_limit] = 128M Problem still exists. I'm running a Joomla main site (which is having no problems) and a Magento store in a sub-directory. My server is a Linux CentOS, running NGINX, APC, Memcached, Full Page Cache and php-fpm. My server has 8 cores and 16gb dedicated ram. My host has shut down my server several times the past week because my php-fpm processes are consuming the entire network. A lot of the individual php-fpm processes are getting over 50% cpu. I've hired several "professionals" and none of them was able to help me, so now broke and stumped, I'm turning to you guys for help. So any suggestions would be greatly appreciated. I turned on slow php logs and here are some of the latest results: [01-Apr-2012 14:26:12] [pool magento] pid 21537 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011a394f8] _renderStraightjoin() /home/flyfish/www/flyshop/lib/Varien/Db/Select.php:397 [0x0000000011a39158] _renderStraightjoin() /home/flyfish/www/flyshop/lib/Zend/Db/Select.php:705 [0x0000000011a38f30] assemble() /home/flyfish/www/flyshop/lib/Zend/Db/Select.php:1343 [0x00007fffbb6d6e50] __toString() unknown:0 [0x0000000011a38630] _prepareQuery() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:409 [0x0000000011a38270] _prepareQuery() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:388 [0x0000000011a38008] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:734 [0x0000000011a375c8] fetchAll() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:196 [0x0000000011a370e0] _loadLabels() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:129 [0x0000000011a369a0] _afterLoad() /home/flyfish/www/flyshop/lib/Varien/Data/Collection/Db.php:536 [0x0000000011a364a8] load() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:253 [0x0000000011a35968] getConfigurableAttributes() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:330 [0x0000000011a35590] getUsedProducts() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:458 [0x0000000011a35410] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1264 [0x0000000011a35098] isAvailable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1244 [0x0000000011a34fa8] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1308 [0x0000000011a33998] isSaleable() /home/flyfish/www/flyshop/app/design/frontend/moxy/default/template/rokmagemodules/rokmage-categoryview/rokmage-categoryview.phtml:122 [0x0000000011a331f0] +++ dump failed [01-Apr-2012 14:26:44] [pool magento] pid 21531 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011a37768] _loadPrices() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:251 [0x0000000011a37280] _loadPrices() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:132 [0x0000000011a36b40] _afterLoad() /home/flyfish/www/flyshop/lib/Varien/Data/Collection/Db.php:536 [0x0000000011a36648] load() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:253 [0x0000000011a35b08] getConfigurableAttributes() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:330 [0x0000000011a35730] getUsedProducts() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:458 [0x0000000011a355b0] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1264 [0x0000000011a35238] isAvailable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1244 [0x0000000011a35148] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1308 [0x0000000011a33b38] isSaleable() /home/flyfish/www/flyshop/app/design/frontend/moxy/default/template/rokmagemodules/rokmage-categoryview/rokmage-categoryview.phtml:122 [0x0000000011a33390] +++ dump failed [01-Apr-2012 14:27:01] [pool magento] pid 21528 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011ff67a8] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement/Pdo.php:228 [0x0000000011ff6518] _execute() /home/flyfish/www/flyshop/lib/Varien/Db/Statement/Pdo/Mysql.php:110 [0x0000000011ff5e90] _execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement.php:300 [0x0000000011ff5a20] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:479 [0x0000000011ff5438] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Pdo/Abstract.php:238 [0x0000000011ff5078] query() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:389 [0x0000000011ff4e98] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:825 [0x0000000011ff4948] fetchOne() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php:1161 [0x0000000011ff4678] getProductCount() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Category.php:801 [0x0000000011ff33e0] getProductCount() /home/flyfish/www/flyshop/app/code/local/Extendware/EWLayeredNav/Model/Library/Plugin/Catalog/Layer/Filter/Category.php:54 [0x0000000011ff2da0] _initItemsData() /home/flyfish/www/flyshop/app/code/local/Extendware/EWLayeredNav/Model/Library/Plugin/Catalog/Layer/Filter/Category.php:23 [0x0000000011ff2818] _getItemsData() /home/flyfish/www/flyshop/app/code/local/Extendware/EWLayeredNav/Model/Library/Plugin/Catalog/Layer/Filter/Category.php:119 [0x0000000011ff26b0] _initItems() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Layer/Filter/Abstract.php:120 [0x0000000011ff2598] getItems() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Layer/Filter/Abstract.php:109 [0x0000000011ff2480] getItemsCount() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Block/Layer/Filter/Abstract.php:126 [0x0000000011ff22b8] getItemsCount() /home/flyfish/www/flyshop/var/cache/extendware/ewcore/overrides/Mage/Catalog/Block/Layer/View/67dcc5dfa9c44bd3a205b75a08193105.php:218 [0x0000000011ff2088] canShowOptions() /home/flyfish/www/flyshop/var/cache/extendware/ewcore/overrides/Mage/Catalog/Block/Layer/View/67dcc5dfa9c44bd3a205b75a08193105.php:233 [0x0000000011ff14f8] canShowBlock() /home/flyfish/www/flyshop/app/design/frontend/moxy/default/template/extendware/ewlayerednav/catalog/layer/view.phtml:6 [0x0000000011ff0d50] +++ dump failed [01-Apr-2012 14:27:04] [pool magento] pid 21529 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000012468ff8] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement/Pdo.php:228 [0x0000000012468d68] _execute() /home/flyfish/www/flyshop/lib/Varien/Db/Statement/Pdo/Mysql.php:110 [0x00000000124686e0] _execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement.php:300 [0x0000000012468270] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:479 [0x0000000012467c88] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Pdo/Abstract.php:238 [0x00000000124678c8] query() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:389 [0x0000000012467660] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:734 [0x0000000012467248] fetchAll() /home/flyfish/www/flyshop/lib/Varien/Data/Collection/Db.php:687 [0x00000000124668f0] _fetchAll() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Entity/Collection/Abstract.php:1045 [0x0000000012466288] _loadEntities() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Entity/Collection/Abstract.php:869 [0x0000000012465fb0] load() /home/flyfish/www/flyshop/app/code/core/Mage/Review/Model/Observer.php:78 [0x0000000012465d10] catalogBlockProductCollectionBeforeToHtml() /home/flyfish/www/flyshop/app/code/core/Mage/Core/Model/App.php:1303 [0x0000000012464c28] _callObserverMethod() /home/flyfish/www/flyshop/app/code/core/Mage/Core/Model/App.php:1278 [0x00000000124649e0] dispatchEvent() /home/flyfish/www/flyshop/app/Mage.php:416 [0x0000000012464290] dispatchEvent() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Block/Product/List.php:163 [0x0000000012463760] _beforeToHtml() /home/flyfish/www/flyshop/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php:864 [0x00000000124633b0] toHtml() /home/flyfish/www/flyshop/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php:584 [0x0000000012462e30] _getChildHtml() /home/flyfish/www/flyshop/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php:528 [0x0000000012462d38] getChildHtml() /home/flyfish/www/flyshop/var/cache/extendware/ewcore/overrides/Mage/Catalog/Block/Category/View/6362e7526f5dcb27e7f8b0b414b59004.php:85 [0x00000000124629f0] getProductListHtml() /home/flyfish/www/flyshop/app/code/local/Extendware/EWLayeredNav/Block/Override/Mage/Catalog/Category/View.php:20 [01-Apr-2012 14:27:55] [pool magento] pid 21536 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011a35010] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement/Pdo.php:228 [0x0000000011a34d80] _execute() /home/flyfish/www/flyshop/lib/Varien/Db/Statement/Pdo/Mysql.php:110 [0x0000000011a346f8] _execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement.php:300 [0x0000000011a34288] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:479 [0x0000000011a33ca0] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Pdo/Abstract.php:238 [0x0000000011a338e0] query() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:389 [0x0000000011a33700] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:825 [0x0000000011a33368] fetchOne() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Resource/Entity/Type.php:71 [0x0000000011a33238] getAdditionalAttributeTable() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Resource/Entity/Attribute.php:483 [0x0000000011a32be8] getAdditionalAttributeTable() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Resource/Entity/Attribute.php:500 [0x0000000011a32860] _afterLoad() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Resource/Entity/Attribute.php:108 [0x0000000011a32330] loadByCode() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Entity/Attribute/Abstract.php:118 [0x0000000011a31350] loadByCode() /home/flyfish/www/flyshop/app/code/core/Mage/Eav/Model/Config.php:423 [0x0000000011a30ce8] getAttribute() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Helper/Output.php:156 [0x0000000011a30208] categoryAttribute() /home/flyfish/www/flyshop/app/design/frontend/base/default/template/catalog/category/view.phtml:47 [0x0000000011a2fa60] +++ dump failed [01-Apr-2012 14:27:56] [pool magento] pid 21530 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011a35b10] updateParamDefaults() /home/flyfish/www/flyshop/var/ait_rewrite/78778b0d1ad4bf93e846365bd2fbf33f.php:276 [0x0000000011a35750] updateParamDefaults() /home/flyfish/www/flyshop/var/ait_rewrite/78778b0d1ad4bf93e846365bd2fbf33f.php:326 [0x0000000011a351f0] getSkinBaseUrl() /home/flyfish/www/flyshop/var/ait_rewrite/78778b0d1ad4bf93e846365bd2fbf33f.php:482 [0x0000000011a350a8] getSkinUrl() /home/flyfish/www/flyshop/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php:981 [0x0000000011a32468] getSkinUrl() /home/flyfish/www/flyshop/app/code/local/Extendware/EWMinify/Block/Override/Mage/Page/Html/Head.php:126 [0x0000000011a30ca8] getCssJsHtml() /home/flyfish/www/flyshop/app/code/local/Extendware/EWCore/Block/Override/Mage/Page/Html/Head.php:55 [0x0000000011a30978] getCssJsHtml() /home/flyfish/www/flyshop/app/code/local/MageWorx/SeoSuite/Block/Page/Html/Head.php:41 [0x0000000011a2fd10] getCssJsHtml() /home/flyfish/www/flyshop/app/design/frontend/moxy/default/template/rokmagemodules/rokmage-modalheader/rokmage-head.phtml:26 [0x0000000011a2f568] +++ dump failed [01-Apr-2012 14:28:28] [pool magento] pid 21527 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000010c7bba0] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement/Pdo.php:228 [0x0000000010c7b910] _execute() /home/flyfish/www/flyshop/lib/Varien/Db/Statement/Pdo/Mysql.php:110 [0x0000000010c7b288] _execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement.php:300 [0x0000000010c7ae18] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:479 [0x0000000010c7a830] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Pdo/Abstract.php:238 [0x0000000010c7a470] query() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:389 [0x0000000010c7a168] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:808 [0x0000000010c79558] fetchPairs() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php:840 [0x0000000010c79240] addCountToCategories() /home/flyfish/www/flyshop/app/code/community/Mage/Catalog/Block/Navigation.php:133 [0x0000000010c71d48] getCurrentChildCategories() /home/flyfish/www/flyshop/app/design/frontend/base/default/template/rokmagemodules/rokmage-magemenus/rokmage-magemenu-left.phtml:139 [0x0000000010c715a0] +++ dump failed [01-Apr-2012 14:28:28] [pool magento] pid 21577 script_filename = /home/flyfish/www/flyshop/index.php [0x0000000011a3a8d8] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement/Pdo.php:228 [0x0000000011a3a648] _execute() /home/flyfish/www/flyshop/lib/Varien/Db/Statement/Pdo/Mysql.php:110 [0x0000000011a39fc0] _execute() /home/flyfish/www/flyshop/lib/Zend/Db/Statement.php:300 [0x0000000011a39b50] execute() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:479 [0x0000000011a39568] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Pdo/Abstract.php:238 [0x0000000011a391a8] query() /home/flyfish/www/flyshop/lib/Varien/Db/Adapter/Pdo/Mysql.php:389 [0x0000000011a38f40] query() /home/flyfish/www/flyshop/lib/Zend/Db/Adapter/Abstract.php:734 [0x0000000011a37cc0] fetchAll() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php:276 [0x0000000011a37b20] _loadNodes() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php:1229 [0x0000000011a379a0] getChildrenCategories() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Category.php:841 [0x0000000011a37690] getChildrenCategories() /home/flyfish/www/flyshop/app/code/community/Mage/Catalog/Block/Navigation.php:130 [0x0000000011a30198] getCurrentChildCategories() /home/flyfish/www/flyshop/app/design/frontend/base/default/template/rokmagemodules/rokmage-magemenus/rokmage-magemenu-left.phtml:139 [0x0000000011a2f9f0] +++ dump failed [01-Apr-2012 14:28:48] [pool magento] pid 21629 script_filename = /home/flyfish/www/flyshop/index.php [0x00002ac987e2cb48] _loadPrices() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:252 [0x00002ac987e2c660] _loadPrices() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php:132 [0x00002ac987e2bf20] _afterLoad() /home/flyfish/www/flyshop/lib/Varien/Data/Collection/Db.php:536 [0x00002ac987e2ba28] load() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:253 [0x00002ac987e2aee8] getConfigurableAttributes() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:330 [0x00002ac987e2ab10] getUsedProducts() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:458 [0x00002ac987e2a990] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1264 [0x00002ac987e2a618] isAvailable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1244 [0x00002ac987e2a528] isSalable() /home/flyfish/www/flyshop/app/code/core/Mage/Catalog/Model/Product.php:1308 [0x00002ac987e28f18] isSaleable() /home/flyfish/www/flyshop/app/design/frontend/moxy/default/template/rokmagemodules/rokmage-categoryview/rokmage-categoryview.phtml:122 [0x00002ac987e28770] +++ dump failed ___________________________________________ A snippet of the Latest php-fpm error log: [01-Apr-2012 14:26:12] WARNING: [pool magento] child 21537, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.265105 sec), logging [01-Apr-2012 14:26:12] ERROR: failed to ptrace(PEEKDATA) pid 21537: Input/output error (5) [01-Apr-2012 14:26:44] WARNING: [pool magento] child 21531, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.268434 sec), logging [01-Apr-2012 14:26:44] ERROR: failed to ptrace(PEEKDATA) pid 21531: Input/output error (5) [01-Apr-2012 14:27:01] WARNING: [pool magento] child 21528, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (6.656633 sec), logging [01-Apr-2012 14:27:01] ERROR: failed to ptrace(PEEKDATA) pid 21528: Input/output error (5) [01-Apr-2012 14:27:04] WARNING: [pool magento] child 21529, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.211136 sec), logging [01-Apr-2012 14:27:55] WARNING: [pool magento] child 21536, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.207001 sec), logging [01-Apr-2012 14:27:55] ERROR: failed to ptrace(PEEKDATA) pid 21536: Input/output error (5) [01-Apr-2012 14:27:56] WARNING: [pool magento] child 21530, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.503186 sec), logging [01-Apr-2012 14:27:56] ERROR: failed to ptrace(PEEKDATA) pid 21530: Input/output error (5) [01-Apr-2012 14:28:28] WARNING: [pool magento] child 21577, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.722625 sec), logging [01-Apr-2012 14:28:28] WARNING: [pool magento] child 21527, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.122326 sec), logging [01-Apr-2012 14:28:28] ERROR: failed to ptrace(PEEKDATA) pid 21527: Input/output error (5) [01-Apr-2012 14:28:28] ERROR: failed to ptrace(PEEKDATA) pid 21577: Input/output error (5) [01-Apr-2012 14:28:48] WARNING: [pool magento] child 21629, script '/home/flyfish/www/flyshop/index.php' (request: "GET /flyshop/index.php") executing too slow (5.446961 sec), logging [01-Apr-2012 14:28:48] ERROR: failed to ptrace(PEEKDATA) pid 21629: Input/output error (5) _____________________________________________ I also noticed that the server is not using much memory: Mem: 16777216k total, 1204040k used, 15573176k free My.conf settings: query_cache_size = 128M innodb_buffer_pool_size = 512M open-files-limit = 8192 table_cache=4096 I just noticed that someone changed my innodb_buffer_pool_size to 512M. Shouldn't this be set to 80% of available ram? So I have 16gb ram so it should be set at 12G; however, I set it at 10G. What do you think? I made that change and restart everything. Php-fpm is still spiking cpu. Here is just 1 php-fpm process: 23942 user 17 0 507m 99m 27m R 90.9%CPU 0.6 0:03.46 php-fpm I'm sure there may be more information you will need to help, so just let me know what you guys need to help me figure this out. Thank you.

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• SSD causing 100% CPU usage in Apache/PHP

  - by Tim Reynolds

  I wanted to increase the performance on my development laptop so I added an Intel 320 Series SSD as my primary drive. Everything is amazingly fast, as expected, except Apache/PHP. I develop Magento by using an Ubuntu 10.10 virtual machine. Information: Host OS: Win 7 Professional 64bit Guest OS: Ubuntu 10.10 32bit Processor: i7 Chipset QM55 SSD: Intel 320 Series 160gb 30% full HDD: Hitachi 320gb 50% full (in side bay using an adapter) Laptop: Lenovo T510 Using: Shared folders Apache Version: 2.2.16 PHP Version: 5.3.3-1 APC Version: 3.1.3p1 APC Memory: 128M Using tmpfs for cache, log, session directories in Magento In the VM running on the SSD (VM files and source files are on the same drive) loading a product page in the Admin takes on average 26.2 seconds and uses 100% CPU for nearly the entire time. In the VM running on the old HDD loading the same page takes on average 4.4 seconds. It mostly uses around 40-50% of the CPU while rendering the page. I have read this post: Performance issues when using SSD for a developer notebook (WAMP/LAMP stack)? It says to change some settings in the bios. I have turned any and all power management features off in the bios. I can't for the life of me understand why this would be happening.

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• Sharepoint Central Administration stuck / high CPU usage

  - by johnnyb10

  I'm using WSS 3 and I recently added a new web application to my SharePoint Server. After adding it, I wasn't able to open the Central Administration site. I also noticed that there was a w3wp.exe error (Event ID 1000) in the Event Viewer. The situation now is that the w3wp.exe process is hovering around 50% CPU usage continuously. I installed a program called IIS Peek, and it shows continuous GET requests on the Central Administration site; this happens even if I stop the Central Administration site in IIS. The IP addresses identified in the GET request is my workstation, which is what I used to attempt to access Central Administration after I created the new web application. Can someone explain what's going on and how I might fix it? It seems as if my computer tried to access Central Administration and then it hung, but the page requests that were happening at the time are somehow continuing over and over again. So my two problems are the inability to access Central Administration, and the CPU Usage of w3wp.exe, which I'm assuming are two symptoms of the same problem. I'd like to know if there's anything I can do besides restarting IIS, because we have clients accessing other sites on this server. Thanks.

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• Mysqld increases the load on the CPU and drops after flush-tables

  - by mirage

  Help please advice on the issue. Normal load on the cpu 20-30% us + sy. After restoring the database files from the slave server (same version) began a periodic problem. mysql starts to load the cpu at 100% (us + sy grows proportionally). The queue is growing, everything slows down. But with mysqladmin flush-tables are normalized for a few hours. Dedicated linux server running mysql 2 x E5506 24Gb RAM, database size 50Gb. [OK] Currently running supported MySQL version 5.0.51a-24 + lenny4-log [OK] Operating on 64-bit architecture -------- Storage Engine Statistics --------------------------------------- ---- [-] Status: + Archive-BDB-Federated + InnoDB-ISAM-NDBCluster [-] Data in MyISAM tables: 33G (Tables: 1474) [-] Data in InnoDB tables: 1G (Tables: 4) [-] Data in MEMORY tables: 120K (Tables: 3) [-] Reads / Writes: 91% / 9% [-] Total buffers: 12.8M per thread and 7.1G global [OK] Maximum possible memory usage: 15.8G (66% of installed RAM) 4000 - 5500 rps key_buffer = 1536M max_allowed_packet = 2M table_cache = 4096 sort_buffer_size = 409584 read_buffer_size = 128K read_rnd_buffer_size = 8M myisam_sort_buffer_size = 64M thread_cache_size = 500 query_cache_size = 100M thread_concurrency = 24 max_connections = 700 tmp_table_size = 4096M join_buffer_size = 4M max_heap_table_size = 4096M query_cache_limit = 1M low_priority_updates = 1 concurrent_insert = 2 wait_timeout = 30 server-id = 1 log_bin = /var/log/mysql/mysql-bin.log expire_logs_days = 10 max_binlog_size = 100M innodb_buffer_pool_size = 1536M innodb_log_buffer_size = 4M innodb_flush_log_at_trx_commit = 2 How to solve the problem?

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• Archive Manager, SQL 2005 and MaxTokenSize high CPU

  - by Tim Alexander

  So, I posted this question a few days ago: Impact of increasing the MaxTokenSize for Kerberos Tickets Since then the thought was to test our settings on two member servers, one with IIS and one without. I setup two GPOs to configure the MaxTokenSize reg setting to 48000 and MaxFieldLength/MaxRequestBytes to 64200 (based on MS KB2020943, these are set at 4/3 * T + 200). The member server seemed to work ok (a devalued tape backup server). The IIS server however has had some strange repercussions. The IIS Sserver host Quest Software Archive Manager (AM) 4.5 that communicates with SQL Server 2005 Enterprise on Server 2003 R2. After the changes all looked good until the SQL Server hit 100% CPU. I have removed the GPOS, removed the reg values and even replaced them with defaults (12000 for token size and can't remember the other one but was in a blog post about the issue in my other post). No change. Bouncing the IIS Server stops the high CPU and a colleague has looked at the SQL server and it is definitely the AM connection taking up the time/work on the SQL server. I haven't changed the reg values on the SQL server or the DCs but am reluctant to do so without understanding why this has happened. I am guessing its to do with the overriding auth and group issue we have but I am not seeing Kerberos errors in either event log. Has anyone seen something similar or does anyone have some tips? Was definitely blindsided by the Kerberos issue and am swimming against the tide to keep things functioning.

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• Sharepoint Central Administration stuck / high CPU usage

  - by johnnyb10

  I'm using WSS 3 and I recently added a new web application to my SharePoint Server. After adding it, I wasn't able to open the Central Administration site. I also noticed that there was a w3wp.exe error (Event ID 1000) in the Event Viewer. The situation now is that the w3wp.exe process is hovering around 50% CPU usage continuously. I installed a program called IIS Peek, and it shows continuous GET requests on the Central Administration site; this happens even if I stop the Central Administration site in IIS. The IP addresses identified in the GET request is my workstation, which is what I used to attempt to access Central Administration after I created the new web application. Can someone explain what's going on and how I might fix it? It seems as if my computer tried to access Central Administration and then it hung, but the page requests that were happening at the time are somehow continuing over and over again. So my two problems are the inability to access Central Administration, and the CPU Usage of w3wp.exe, which I'm assuming are two symptoms of the same problem. I'd like to know if there's anything I can do besides restarting IIS, because we have clients accessing other sites on this server. Thanks.

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• Compaq Motherboard gives "CPU Fan Error"

  - by John

  I have a motherboard for a HP business desktop dx5150 PC. The model written on the board is "MS-7050" and it is for an AMD socket 939 processor. I got everything installed in it, and when I turned it on, it showed a message stating that there was a "CPU Fan Error" (or some similar language) and then turned off. It never stays on for more than about 30 seconds, probably less. The fan had previously been working great, but I replaced it anyway with a brand new Cooler Master fan. This did not work. I then reset the BIOS with the jumpers on the board, no dice. I replaced the CMOS battery. Same error. I then replaced the entire computer power supply with a brand new Antec, same error. The fan header is keyed, and has room for 3 pins. The CPU fan is designed the same way, so its not that I'm missing a temperature sensor or anything. Can anyone give some suggestions? Especially maybe some secret keystrokes to bypass this error?

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• Random server lag, no CPU/mem/pagefile usage

  - by Kev

  We have a fairly new server running Windows 2003 SP2, and the past few days we've noticed random slowdowns. When I'm logged into the server over remote desktop while this is happening, or if I'm physically sitting at the server logged in, suddenly everything becomes extremely laggy. Any UI element I try to interact with takes upwards of ten seconds to react, and then responds very slowly. Then a minute later everything is quite snappy again. During this, I have Task Manager minimized to the tray, and there's no CPU usage. I open it up right after this happens, and there's very little CPU usage on the graph, and no memory or pagefile usage above normal. (Normal being 1.5 GB free in the case of memory.) This is what I see logged into the server, and then users start calling saying things are slow, timing out, and failing--anything to do with our server. No events in the Event Viewer around the times this happens. The context I'm working in (last thing I clicked, etc.) seems different every time--different programs active, different combinations of programs open. Never anything particularly stressful (like adding an event entry to a Cobian Backup configuration, or editing text in TextPad, which has been exceptionally stable in my extensive usage of it.) I would've thought it was just the server, but a family member's home PC (entirely separate) running WinXPSP3 had the same thing happen to it last night a few times. Is this some new behaviour introduced by the latest Windows Updates? Either way, where do I even start to look when nothing seems to be chewing up resources?

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• Terminal Server CPU usage at 100%

  - by Light1c3

  I'm running a terminal server with around 50-60 users,and every so often the server will go from 40% usage to 100%. I took a closer look an it seems every time this happens, a different user or two seem to be caught in a loop and end up using < 30% where the rest of the users only use a maximum of 5%. The company behind the software we use clame it's due to the servers inadequate hardware (It's a VM system running on a dual - quad core setup) which to me sounds like BS! I'm fairly new to this level of IT so if I misspoke I apologize. I have no way to prove it but I believe adding more raw hardware power wont do me any good as this to me seems like a bug in their software, and it will suck up as much ( or little) CPU as it's given. The VM in question has 4 vCPU cores and 12 GB RAM available, and is running Windows Server 2008, 64-bit Thanks in advance for your help! Note: I have the same question posted on SO, but was pointed in this direction so just in case, here is a link to the post http://stackoverflow.com/questions/17276602/termserver-cpu-at-100

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• What cause high CPU usage on the server during file upload

  - by bosiang

  When I try to upload a huge file size (approx 2GB), the server cpu usage goes really high. What should I do to fix this? I just use standard html form and php, for file upload. I'm sorry if I post on the wrong forum. Please point me to the right direction here is the result of "top" command during uploading 4 files (18mb, 38mb, 60mb, 33mb) 1904 apache 20 0 33504 5740 1952 R 28.3 0.2 0:02.19 httpd 1905 apache 20 0 33504 5740 1952 R 28.3 0.2 0:01.99 httpd 1903 apache 20 0 33232 6968 3060 R 28.0 0.2 0:01.98 httpd 1910 apache 20 0 33240 6020 2248 S 11.5 0.2 0:02.85 httpd 2133 root 20 0 2656 1124 896 R 1.6 0.0 0:00.71 top 1 root 20 0 2864 1404 1188 S 0.0 0.0 0:03.99 init the code for chunking, although eventhough I don't use this code (just simple file upload), it still cause that high cpu usage function sendRequest() { //clean the screen //bars.innerHTML = ''; var file = document.getElementById('fileToUpload'); for(var i = 0; i < file.files.length; i++) { var blob = file.files[i]; var originalFileName = blob.name; var filePart = 0 const BYTES_PER_CHUNK = 100 * 1024 * 1024; // 10MB chunk sizes. var realFileSize = blob.size; var start = 0; var end = BYTES_PER_CHUNK; totalChunks = Math.ceil(realFileSize / BYTES_PER_CHUNK); alert(realFileSize); while( start < realFileSize ) { if (blob.webkitSlice) { //for Google Chrome var chunk = blob.webkitSlice(start, end); } else if (blob.mozSlice) { //for Mozilla Firefox var chunk = blob.mozSlice(start, end); } uploadFile(chunk, originalFileName, filePart, totalChunks, i); filePart++; start = end; end = start + BYTES_PER_CHUNK; } } }

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• procdump on w3wp.exe: Only part of a ReadProcessMemory or WriteProcessMemory request was completed

  - by JakeS

  I'm having a problem with an IIS application that occasionally spikes up in CPU usage, and am trying to use procdump to get a memory dump for examination. I'm running "procdump.exe -64 -mA 9999" where 9999 is the pid of the process. But every time I do it, I get an error: Only part of a ReadProcessMemory or WriteProcessMemory request was completed. Doing this also recycles the apppool, relieving the CPU spike, so I can't keep trying until I get it right. Does anyone know what is going wrong? EDIT WITH MORE INFO: So far I've failed to generate a debug dump no matter what tool I try. All of them seem to generate the same sort of error. This is 2008 R2 Datacenter running IIS7 with a 64-bit asp.net web site. My best guess is that something is getting blocked, causing some requests to remain open in IIS and gradually using up resources. If I monitor the worker process using the IIS Manager and view all requests, throughout the day I'll start to see some requests that "stick" and run forever. Some of these are for static files. Some are for aspx pages. I cannot see any "common" reason for them. Every once in a while the app pool starts taking up 100% CPU and the only remedy is to kill it.

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• BIOS interrupts, privilege levels and paging

  - by Jack

  Hi, I was learning about Intel 8086-80486 CPUs and their interactions with HW. But I still don´t understand it quite well. Please, help me fill blank spots. First, I know that CPU communicates with HW using BIOS interrupts. But, what really happens in PC, when I call some INT instruction? I know that according the interrupt table some instructions begin to execute, but how by executing some instructions can BIOS recognize what I want to do? Becouse as far as I know, CPU has no extra communication channel with BIOS, it can only adress memory and receive data. So how can I instruct BIOS to do something, when I can only address RAM? Next thing I don't understand is about privilege levels. I know about ring model, and access rights, but how does the CPU know which privilege level has executed an instruction? I think that these privileges apply only when intruction is trying to address memory, but how does an application get its privilege level? I mean I know its level 3, but how is it set? And last thing, I know that paging is address scheme that is used to support aplication-transparent virtual memory, or swapping, but I could not find any information about how paging is tied with protected mode. Like if paging is like next mode independent of protected mode, or its somehow implemented within protected mode. And if it is implemented in protected mode, isn´t it too slow, to first address application space, then offset, and then paging folder, page and offset once again?

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• Intel Core i7 QuadCore on HP Pavilion dv7 Overheating Issues

  - by kellax

  I bought a brand new HP notebook: HP Pavilion dv7-6b21em BeatsAudio edition. The notebook is about 2 months old and has pretty nasty overheating problem. I mainly use it for development however i do play some games. The disturbing thing is that the computer is loud on pretty simple tasks. Here are the specs: CPU: Intel Core i7-2670QM QuadCore ( 8 threads ) @ 2.20 GHz RAM: ( 8GB ) 2x 4GB @ 1066 HDD: 1TB 7200 GPU: ATI Radeon HD 6770M 1GB Dedicated DDR OS: Windows 7 64bit Enterprise I have an external monitor runing on VGA port an 22' Samsung SyncMaster S24B300 CPU Heat Statistics Platform: rPGA 988B (Socket G2) Frequency: cca. 3000 Mhz VID: 1.1809 - 1.2059 v Revision: D2 CPUID: 0x206A7 TDP: 45.0 Wats, Lithographu: 32 nm Heat: Tj. Max: 100*C, Power 4.5 - 5.9 Wats Core #0: 63*C Load on all is about 0 to 2% Core #1: 65*C Core #2: 66*C Core #3: 67*C I opened the notebook the fan is working fine there is no dust but still right now the fan is pretty loud even tho all i have open is FireFox. When i run a game the heat jumps to whopping 90-97*C. It has not shut down due to overheating yet but the loud fan is pretty annoying considering I'm not really doing anything stressfull. Is there anything i can do to fix this is it maybe a BIOS issue ? I have all drivers updated tho to the latest. I have very few background processes running consuming bare 2GB of RAM and about 2% of CPU. I had it serviced they said there is nothing wrong with it. But i feel that a Notebook that costs 1.2k Euros cant be like this.

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• mpirun -np N, what if N is larger than my core number?

  - by Daniel

  Say I have a 4-core workstation, what would linux (Ubuntu) do if I execute mpirun -np 9 XXX Q1. Will 9 run immediately together, or they will run 4 after 4? Q2. I suppose that using 9 is not good, because the remainder 1, it will make the computer confused, (I don't know is it going to be confused at all, or the "head" of the computer will decide which core among the 4 cores will be used?) Or it will be randomly picked. Who decide which one core to call? Q3. If I feel my cpu is not bad and my ram is okay and large enough, and my case is not very big. Is it a good idea in order to fully use my cpu and ram, that I do mpirun -np 8 XXX, or even mpirun -np 12 XXX. Q4. Who decides all of these effciency optimization, Ubuntu, or linux, or motherboard or cpu? Your enlightenment would be really appreciated.

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• Building a PC for Work and play? [closed]

  - by Derek Organ

  Ok, Its been a long time since I build my own PC so I'm looking to get back into it again and build a new one. First off budget is about €800 excluding the monitor and windows 7 licence and mouse. (just bought a new g500) I plan on using my computer for work, lots of applications open at once but none particularly excessive (photoshop being the most demanding, mostly coding tools) I also use it for some gaming, e.g. COD, Starcraft etc. One thing I do want to do eventually is get a really good monitor with hight resolution and maybe 27" so the graphics card needs to be able to make best use of that. So a few questions 1) Is the bottle neck in performance mostly still the harddrives? 2) Aren't most processors e.g. i5 etc even i3 so far a head of other bottlenecks it makes litte difference the higher you go. Isn't the Graphics card dealing with heavy graphics so what really slows because of a slow CPU? So from this my thinking is to get a SSD drive as my primary drive for OS etc and have loads of memory e.g. 6-8GB and a decent mid level graphics card? It doesn't seem at my level worth spending much on CPU and any other parts really. I basic parts off the top of my head Case, Motherboard CPU SSD Drive SATA Drive Power Supply Memory Cooling (fan?) Graphics Card Network Card Keyboard DVD drive Mouse Windows Monitor Am I missing anything? Any helpful tips or general education much appreciated. Thanks, Derek

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• Software way to cool down an old MacBook Pro

  - by notMacBookProSuperUser

  Hi all, First a little background: I've got lots of computers, including Linux PCs and two MacBook Pro (and a MacMini). My concern is with my 'old' MacBookPro (Core Duo). It really does overheat. Warranty is long void. Years ago (I'd say 2.5 years ago or so) one day it overheated so bad that the battery inflated due to the heat. I got a new battery for free but it's still getting incredibly hot (much other than any other computer I've got: my newer Core 2 Duo MacBook Pro doesn't get nearly as hot as the old one. It s really a pain because I use my old MBP when I m in front of TV, having it on my lap, and it can really become unbearable. I don't want to open that old MBP. On Linux I can force a new CPU 'governor' that decides how the CPU is allowed to operate: it can be 'on demand', 'always max speed', 'always speed x', etc. Does the same exist under MacOS X? Is there a way, say if a 1.86 Ghz Core Duo can run at 1.6 Ghz, to ask MacOS X: "never run this CPU above 1.6 Ghz" ?

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• What are the biggest, best CPUs that support Physical Address Extension?

  - by Giffyguy

  I'm looking for a CPU that will support PAE and fit into an LGA775 socket. This combination of technology is very much preferred for my current server hardware/software setup. My priorities in order of highest to lowest: PAE & LGA775 At least 1066Mhz FSB Largest CPU cache possible Multiple Cores if possible HyperThreading if possible Most other factors are of little-to-no consequence. I'm finding it very difficult to figure out what my options are. Intel doesn't have much useful information on PAE (since x64 is so dominant), and Wikipedia simply says that "PAE is provided by Intel Pentium Pro (and above) CPUs - including all later Pentium-series processors except the 400 MHz bus versions of the Pentium M." All of Intel's listed Pentium CPU's support Intel64, which makes me seriously doubt they will support PAE with a 32-bit OS. And Wikipedia's claim is so vague, I have no idea if they mean up-to-and-including the x64 Prescott CPUs. PAE is supposed to be an aspect of the x86 architecture, and I believe it is no longer supported in an x64 environment. Please correct me if I am wrong.

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