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  • SEO Optimization

    With so many websites being uploaded to the internet every day, one might find it difficult to get his or her website marketed on the internet. Many people have been turning to SEO optimization for help with internet marketing and advertising.

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  • Search Engine Optimization Job

    Search Engine Optimization is also called as SEO; it is essentially part science and part arts. SEO job is to find such contents, which are most intimately matches and is the most relevant to what the person is trying to look for by using a computer.

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  • Recommended Search Engine Optimization Techniques For Internet Marketers

    Search engine optimization or SEO is an area that many small businesses find intimidating. As a business owner with a website, you probably receive unsolicited offers to improve your search engine rankings. While there is nothing wrong with using a reputable SEO professional to get your site ranked highly, there are many simple things that can be done up front to maximize your ranking without paying someone.

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  • Search Engine Optimization For Your Business

    We are living in the world of competition. As a businessman, you have to do an initiative that will make your business grow. With this, it is important to know about search engine optimization to make your site stand out in the search engine.

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  • Understanding Search Engine Optimization

    Search engine optimization plays a critical role in turning your website into a tool that truly grows your business. If you are new to the online world, this article will help you understand what SEO is and how to use it to reach more people with your message.

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  • Regular expression from font to span (size and colour) and back (VB.NET)

    - by chapmanio
    Hi, I am looking for a regular expression that can convert my font tags (only with size and colour attributes) into span tags with the relevant inline css. This will be done in VB.NET if that helps at all. I also need a regular expression to go the other way as well. To elaborate below is an example of the conversion I am looking for: <font size="10">some text</font> To then become: <span style="font-size:10px;">some text</span> So converting the tag and putting a "px" at the end of whatever the font size is (I don't need to change/convert the font size, just stick px at the end). The regular expression needs to cope with a font tag that only has a size attribute, only a color attribute, or both: <font size="10">some text</font> <font color="#000000">some text</font> <font size="10" color="#000000">some text</font> <font color="#000000" size="10">some text</font> I also need another regular expression to do the opposite conversion. So for example: <span style="font-size:10px;">some text</span> Will become: <font size="10">some text</font> As before converting the tag but this time removing the "px", I don't need to worry about changing the font size. Again this will also need to cope with the size styling, font styling, and a combination of both: <span style="font-size:10px;">some text</span> <span style="color:#000000;">some text</span> <span style="font-size:10px; color:#000000;">some text</span> <span style="color:#000000; font-size:10px;">some text</span> I apprecitate this is a lot to ask, I am hopeless with regular expressions and need to find a way of making these conversions in my code. Thanks so much to anyone that can/is willing to help me!

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  • SQL SERVER – Shrinking Database is Bad – Increases Fragmentation – Reduces Performance

    - by pinaldave
    Earlier, I had written two articles related to Shrinking Database. I wrote about why Shrinking Database is not good. SQL SERVER – SHRINKDATABASE For Every Database in the SQL Server SQL SERVER – What the Business Says Is Not What the Business Wants I received many comments on Why Database Shrinking is bad. Today we will go over a very interesting example that I have created for the same. Here are the quick steps of the example. Create a test database Create two tables and populate with data Check the size of both the tables Size of database is very low Check the Fragmentation of one table Fragmentation will be very low Truncate another table Check the size of the table Check the fragmentation of the one table Fragmentation will be very low SHRINK Database Check the size of the table Check the fragmentation of the one table Fragmentation will be very HIGH REBUILD index on one table Check the size of the table Size of database is very HIGH Check the fragmentation of the one table Fragmentation will be very low Here is the script for the same. USE MASTER GO CREATE DATABASE ShrinkIsBed GO USE ShrinkIsBed GO -- Name of the Database and Size SELECT name, (size*8) Size_KB FROM sys.database_files GO -- Create FirstTable CREATE TABLE FirstTable (ID INT, FirstName VARCHAR(100), LastName VARCHAR(100), City VARCHAR(100)) GO -- Create Clustered Index on ID CREATE CLUSTERED INDEX [IX_FirstTable_ID] ON FirstTable ( [ID] ASC ) ON [PRIMARY] GO -- Create SecondTable CREATE TABLE SecondTable (ID INT, FirstName VARCHAR(100), LastName VARCHAR(100), City VARCHAR(100)) GO -- Create Clustered Index on ID CREATE CLUSTERED INDEX [IX_SecondTable_ID] ON SecondTable ( [ID] ASC ) ON [PRIMARY] GO -- Insert One Hundred Thousand Records INSERT INTO FirstTable (ID,FirstName,LastName,City) SELECT TOP 100000 ROW_NUMBER() OVER (ORDER BY a.name) RowID, 'Bob', CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%2 = 1 THEN 'Smith' ELSE 'Brown' END, CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 1 THEN 'New York' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 5 THEN 'San Marino' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 3 THEN 'Los Angeles' ELSE 'Houston' END FROM sys.all_objects a CROSS JOIN sys.all_objects b GO -- Name of the Database and Size SELECT name, (size*8) Size_KB FROM sys.database_files GO -- Insert One Hundred Thousand Records INSERT INTO SecondTable (ID,FirstName,LastName,City) SELECT TOP 100000 ROW_NUMBER() OVER (ORDER BY a.name) RowID, 'Bob', CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%2 = 1 THEN 'Smith' ELSE 'Brown' END, CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 1 THEN 'New York' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 5 THEN 'San Marino' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 3 THEN 'Los Angeles' ELSE 'Houston' END FROM sys.all_objects a CROSS JOIN sys.all_objects b GO -- Name of the Database and Size SELECT name, (size*8) Size_KB FROM sys.database_files GO -- Check Fragmentations in the database SELECT avg_fragmentation_in_percent, fragment_count FROM sys.dm_db_index_physical_stats (DB_ID(), OBJECT_ID('SecondTable'), NULL, NULL, 'LIMITED') GO Let us check the table size and fragmentation. Now let us TRUNCATE the table and check the size and Fragmentation. USE MASTER GO CREATE DATABASE ShrinkIsBed GO USE ShrinkIsBed GO -- Name of the Database and Size SELECT name, (size*8) Size_KB FROM sys.database_files GO -- Create FirstTable CREATE TABLE FirstTable (ID INT, FirstName VARCHAR(100), LastName VARCHAR(100), City VARCHAR(100)) GO -- Create Clustered Index on ID CREATE CLUSTERED INDEX [IX_FirstTable_ID] ON FirstTable ( [ID] ASC ) ON [PRIMARY] GO -- Create SecondTable CREATE TABLE SecondTable (ID INT, FirstName VARCHAR(100), LastName VARCHAR(100), City VARCHAR(100)) GO -- Create Clustered Index on ID CREATE CLUSTERED INDEX [IX_SecondTable_ID] ON SecondTable ( [ID] ASC ) ON [PRIMARY] GO -- Insert One Hundred Thousand Records INSERT INTO FirstTable (ID,FirstName,LastName,City) SELECT TOP 100000 ROW_NUMBER() OVER (ORDER BY a.name) RowID, 'Bob', CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%2 = 1 THEN 'Smith' ELSE 'Brown' END, CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 1 THEN 'New York' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 5 THEN 'San Marino' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 3 THEN 'Los Angeles' ELSE 'Houston' END FROM sys.all_objects a CROSS JOIN sys.all_objects b GO -- Name of the Database and Size SELECT name, (size*8) Size_KB FROM sys.database_files GO -- Insert One Hundred Thousand Records INSERT INTO SecondTable (ID,FirstName,LastName,City) SELECT TOP 100000 ROW_NUMBER() OVER (ORDER BY a.name) RowID, 'Bob', CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%2 = 1 THEN 'Smith' ELSE 'Brown' END, CASE WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 1 THEN 'New York' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 5 THEN 'San Marino' WHEN ROW_NUMBER() OVER (ORDER BY a.name)%10 = 3 THEN 'Los Angeles' ELSE 'Houston' END FROM sys.all_objects a CROSS JOIN sys.all_objects b GO -- Name of the Database and Size SELECT name, (size*8) Size_KB FROM sys.database_files GO -- Check Fragmentations in the database SELECT avg_fragmentation_in_percent, fragment_count FROM sys.dm_db_index_physical_stats (DB_ID(), OBJECT_ID('SecondTable'), NULL, NULL, 'LIMITED') GO You can clearly see that after TRUNCATE, the size of the database is not reduced and it is still the same as before TRUNCATE operation. After the Shrinking database operation, we were able to reduce the size of the database. If you notice the fragmentation, it is considerably high. The major problem with the Shrink operation is that it increases fragmentation of the database to very high value. Higher fragmentation reduces the performance of the database as reading from that particular table becomes very expensive. One of the ways to reduce the fragmentation is to rebuild index on the database. Let us rebuild the index and observe fragmentation and database size. -- Rebuild Index on FirstTable ALTER INDEX IX_SecondTable_ID ON SecondTable REBUILD GO -- Name of the Database and Size SELECT name, (size*8) Size_KB FROM sys.database_files GO -- Check Fragmentations in the database SELECT avg_fragmentation_in_percent, fragment_count FROM sys.dm_db_index_physical_stats (DB_ID(), OBJECT_ID('SecondTable'), NULL, NULL, 'LIMITED') GO You can notice that after rebuilding, Fragmentation reduces to a very low value (almost same to original value); however the database size increases way higher than the original. Before rebuilding, the size of the database was 5 MB, and after rebuilding, it is around 20 MB. Regular rebuilding the index is rebuild in the same user database where the index is placed. This usually increases the size of the database. Look at irony of the Shrinking database. One person shrinks the database to gain space (thinking it will help performance), which leads to increase in fragmentation (reducing performance). To reduce the fragmentation, one rebuilds index, which leads to size of the database to increase way more than the original size of the database (before shrinking). Well, by Shrinking, one did not gain what he was looking for usually. Rebuild indexing is not the best suggestion as that will create database grow again. I have always remembered the excellent post from Paul Randal regarding Shrinking the database is bad. I suggest every one to read that for accuracy and interesting conversation. Let us run following script where we Shrink the database and REORGANIZE. -- Name of the Database and Size SELECT name, (size*8) Size_KB FROM sys.database_files GO -- Check Fragmentations in the database SELECT avg_fragmentation_in_percent, fragment_count FROM sys.dm_db_index_physical_stats (DB_ID(), OBJECT_ID('SecondTable'), NULL, NULL, 'LIMITED') GO -- Shrink the Database DBCC SHRINKDATABASE (ShrinkIsBed); GO -- Name of the Database and Size SELECT name, (size*8) Size_KB FROM sys.database_files GO -- Check Fragmentations in the database SELECT avg_fragmentation_in_percent, fragment_count FROM sys.dm_db_index_physical_stats (DB_ID(), OBJECT_ID('SecondTable'), NULL, NULL, 'LIMITED') GO -- Rebuild Index on FirstTable ALTER INDEX IX_SecondTable_ID ON SecondTable REORGANIZE GO -- Name of the Database and Size SELECT name, (size*8) Size_KB FROM sys.database_files GO -- Check Fragmentations in the database SELECT avg_fragmentation_in_percent, fragment_count FROM sys.dm_db_index_physical_stats (DB_ID(), OBJECT_ID('SecondTable'), NULL, NULL, 'LIMITED') GO You can see that REORGANIZE does not increase the size of the database or remove the fragmentation. Again, I no way suggest that REORGANIZE is the solution over here. This is purely observation using demo. Read the blog post of Paul Randal. Following script will clean up the database -- Clean up USE MASTER GO ALTER DATABASE ShrinkIsBed SET SINGLE_USER WITH ROLLBACK IMMEDIATE GO DROP DATABASE ShrinkIsBed GO There are few valid cases of the Shrinking database as well, but that is not covered in this blog post. We will cover that area some other time in future. Additionally, one can rebuild index in the tempdb as well, and we will also talk about the same in future. Brent has written a good summary blog post as well. Are you Shrinking your database? Well, when are you going to stop Shrinking it? Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Index, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQLServer, T SQL, Technology

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  • Optimize strategies for xml parsing?

    - by Future2020
    I am looking for general optimization tips and guidelines for xml parsing. One of the optimization strategies is of course selecting the "right" parser. A detailed comparison between the available parsers for ios can be found here http://www.raywenderlich.com/553/how-to-chose-the-best-xml-parser-for-your-iphone-project. However, I am currently trying to investigate general guidelines and tips on how to optimize by payloads to increase the performance as possible. This question is similar to (a question I have posted in the context of ios) but I have not got a sufficient answer. So this question is not in the context of any particular programming language.

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  • How do i mount my SD Card? I am using ubuntu 10.04

    - by shobhit
    root@shobhit:/media# lsusb Bus 002 Device 017: ID 14cd:125c Super Top Bus 002 Device 003: ID 0c45:6421 Microdia Bus 002 Device 002: ID 8087:0020 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 011: ID 413c:8160 Dell Computer Corp. Bus 001 Device 006: ID 413c:8162 Dell Computer Corp. Bus 001 Device 005: ID 413c:8161 Dell Computer Corp. Bus 001 Device 004: ID 138a:0008 DigitalPersona, Inc Bus 001 Device 003: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth) Bus 001 Device 002: ID 8087:0020 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub root@shobhit:/home/shobhit/scripts/internalUtilities# sudo lspci -v -nn 00:1a.0 USB Controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller [8086:3b3c] (rev 06) (prog-if 20) Subsystem: Dell Device [1028:0441] Flags: bus master, medium devsel, latency 0, IRQ 16 Memory at fbc08000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCIe advanced features <?> Kernel driver in use: ehci_hcd 00:1d.0 USB Controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller [8086:3b34] (rev 06) (prog-if 20) Subsystem: Dell Device [1028:0441] Flags: bus master, medium devsel, latency 0, IRQ 23 Memory at fbc07000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCIe advanced features <?> Kernel driver in use: ehci_hcd 00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev a6) (prog-if 01) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=20, subordinate=20, sec-latency=32 Capabilities: [50] Subsystem: Dell Device [1028:0441] 00:1f.0 ISA bridge [0601]: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller [8086:3b0b] (rev 06) Subsystem: Dell Device [1028:0441] Flags: bus master, medium devsel, latency 0 Capabilities: [e0] Vendor Specific Information <?> Kernel modules: iTCO_wdt 00:1f.2 SATA controller [0106]: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller [8086:3b2f] (rev 06) (prog-if 01) Subsystem: Dell Device [1028:0441] Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 29 I/O ports at f070 [size=8] I/O ports at f060 [size=4] I/O ports at f050 [size=8] I/O ports at f040 [size=4] I/O ports at f020 [size=32] Memory at fbc06000 (32-bit, non-prefetchable) [size=2K] Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable+ Capabilities: [70] Power Management version 3 Capabilities: [a8] SATA HBA <?> Capabilities: [b0] PCIe advanced features <?> Kernel driver in use: ahci Kernel modules: ahci 00:1f.3 SMBus [0c05]: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller [8086:3b30] (rev 06) Subsystem: Dell Device [1028:0441] Flags: medium devsel, IRQ 3 Memory at fbc05000 (64-bit, non-prefetchable) [size=256] I/O ports at f000 [size=32] Kernel modules: i2c-i801 00:1f.6 Signal processing controller [1180]: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem [8086:3b32] (rev 06) Subsystem: Dell Device [1028:0441] Flags: bus master, fast devsel, latency 0, IRQ 3 Memory at fbc04000 (64-bit, non-prefetchable) [size=4K] Capabilities: [50] Power Management version 3 Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable- 12:00.0 Network controller [0280]: Broadcom Corporation Device [14e4:4727] (rev 01) Subsystem: Dell Device [1028:0010] Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at fbb00000 (64-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [58] Vendor Specific Information <?> Capabilities: [48] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Capabilities: [d0] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting <?> Capabilities: [13c] Virtual Channel <?> Capabilities: [160] Device Serial Number cb-c0-8b-ff-ff-38-00-00 Capabilities: [16c] Power Budgeting <?> Kernel driver in use: wl Kernel modules: wl 13:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 03) Subsystem: Dell Device [1028:0441] Flags: bus master, fast devsel, latency 0, IRQ 28 I/O ports at e000 [size=256] Memory at d0b04000 (64-bit, prefetchable) [size=4K] Memory at d0b00000 (64-bit, prefetchable) [size=16K] Expansion ROM at fba00000 [disabled] [size=128K] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+ Capabilities: [70] Express Endpoint, MSI 01 Capabilities: [ac] MSI-X: Enable- Mask- TabSize=4 Capabilities: [cc] Vital Product Data <?> Capabilities: [100] Advanced Error Reporting <?> Capabilities: [140] Virtual Channel <?> Capabilities: [160] Device Serial Number 00-e0-4c-68-00-00-00-03 Kernel driver in use: r8169 Kernel modules: r8169 root@shobhit:/home/shobhit/scripts/internalUtilities# sudo lshw shobhit description: Portable Computer product: Vostro 3500 vendor: Dell Inc. version: A10 serial: FV1L3N1 width: 32 bits capabilities: smbios-2.6 dmi-2.6 smp-1.4 smp configuration: boot=normal chassis=portable cpus=2 uuid=44454C4C-5600-1031-804C-C6C04F334E31 *-core description: Motherboard product: 0G2R51 vendor: Dell Inc. physical id: 0 version: A10 serial: .FV1L3N1.CN7016612H00PW. slot: To Be Filled By O.E.M. *-cpu:0 description: CPU product: Intel(R) Core(TM) i5 CPU M 480 @ 2.67GHz vendor: Intel Corp. physical id: 4 bus info: cpu@0 version: 6.5.5 serial: 0002-0655-0000-0000-0000-0000 slot: CPU 1 size: 1197MHz capacity: 2926MHz width: 64 bits clock: 533MHz capabilities: boot fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp x86-64 constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida arat tpr_shadow vnmi flexpriority ept vpid cpufreq configuration: id=4 *-cache:0 description: L1 cache physical id: 5 slot: L1-Cache size: 64KiB capacity: 64KiB capabilities: internal write-back unified *-cache:1 description: L2 cache physical id: 6 slot: L2-Cache size: 512KiB capacity: 512KiB capabilities: internal varies unified *-cache:2 description: L3 cache physical id: 7 slot: L3-Cache size: 3MiB capacity: 3MiB capabilities: internal varies unified *-logicalcpu:0 description: Logical CPU physical id: 4.1 width: 64 bits capabilities: logical *-logicalcpu:1 description: Logical CPU physical id: 4.2 width: 64 bits capabilities: logical *-logicalcpu:2 description: Logical CPU physical id: 4.3 width: 64 bits capabilities: logical *-logicalcpu:3 description: Logical CPU physical id: 4.4 width: 64 bits capabilities: logical *-logicalcpu:4 description: Logical CPU physical id: 4.5 width: 64 bits capabilities: logical *-logicalcpu:5 description: Logical CPU physical id: 4.6 width: 64 bits capabilities: logical *-logicalcpu:6 description: Logical CPU physical id: 4.7 width: 64 bits capabilities: logical *-logicalcpu:7 description: Logical CPU physical id: 4.8 width: 64 bits capabilities: logical *-logicalcpu:8 description: Logical CPU physical id: 4.9 width: 64 bits capabilities: logical *-logicalcpu:9 description: Logical CPU physical id: 4.a width: 64 bits capabilities: logical *-logicalcpu:10 description: Logical CPU physical id: 4.b width: 64 bits capabilities: logical *-logicalcpu:11 description: Logical CPU physical id: 4.c width: 64 bits capabilities: logical *-logicalcpu:12 description: Logical CPU physical id: 4.d width: 64 bits capabilities: logical *-logicalcpu:13 description: Logical CPU physical id: 4.e width: 64 bits capabilities: logical *-logicalcpu:14 description: Logical CPU physical id: 4.f width: 64 bits capabilities: logical *-logicalcpu:15 description: Logical CPU physical id: 4.10 width: 64 bits capabilities: logical *-memory description: System Memory physical id: 1d slot: System board or motherboard size: 3GiB *-bank:0 description: DIMM Synchronous 1333 MHz (0.8 ns) product: HMT112S6TFR8C-H9 vendor: AD80 physical id: 0 serial: 5525C935 slot: DIMM_A size: 1GiB width: 64 bits clock: 1333MHz (0.8ns) *-bank:1 description: DIMM Synchronous 1333 MHz (0.8 ns) product: HMT125S6TFR8C-H9 vendor: AD80 physical id: 1 serial: 3441D6CA slot: DIMM_B size: 2GiB width: 64 bits clock: 1333MHz (0.8ns) *-firmware description: BIOS vendor: Dell Inc. physical id: 0 version: A10 (10/25/2010) size: 64KiB capacity: 1984KiB capabilities: mca pci upgrade shadowing escd cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb zipboot biosbootspecification *-cpu:1 physical id: 1 bus info: cpu@1 version: 6.5.5 serial: 0002-0655-0000-0000-0000-0000 size: 1197MHz capacity: 1197MHz capabilities: vmx ht cpufreq configuration: id=4 *-logicalcpu:0 description: Logical CPU physical id: 4.1 capabilities: logical *-logicalcpu:1 description: Logical CPU physical id: 4.2 capabilities: logical *-logicalcpu:2 description: Logical CPU physical id: 4.3 capabilities: logical *-logicalcpu:3 description: Logical CPU physical id: 4.4 capabilities: logical *-logicalcpu:4 description: Logical CPU physical id: 4.5 capabilities: logical *-logicalcpu:5 description: Logical CPU physical id: 4.6 capabilities: logical *-logicalcpu:6 description: Logical CPU physical id: 4.7 capabilities: logical *-logicalcpu:7 description: Logical CPU physical id: 4.8 capabilities: logical *-logicalcpu:8 description: Logical CPU physical id: 4.9 capabilities: logical *-logicalcpu:9 description: Logical CPU physical id: 4.a capabilities: logical *-logicalcpu:10 description: Logical CPU physical id: 4.b capabilities: logical *-logicalcpu:11 description: Logical CPU physical id: 4.c capabilities: logical *-logicalcpu:12 description: Logical CPU physical id: 4.d capabilities: logical *-logicalcpu:13 description: Logical CPU physical id: 4.e capabilities: logical *-logicalcpu:14 description: Logical CPU physical id: 4.f capabilities: logical *-logicalcpu:15 description: Logical CPU physical id: 4.10 capabilities: logical *-pci description: Host bridge product: Core Processor DRAM Controller vendor: Intel Corporation physical id: 100 bus info: pci@0000:00:00.0 version: 18 width: 32 bits clock: 33MHz configuration: driver=agpgart-intel resources: irq:0 *-display description: VGA compatible controller product: Core Processor Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 18 width: 64 bits clock: 33MHz capabilities: msi pm bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:30 memory:fac00000-faffffff memory:c0000000-cfffffff(prefetchable) ioport:f080(size=8) *-communication UNCLAIMED description: Communication controller product: 5 Series/3400 Series Chipset HECI Controller vendor: Intel Corporation physical id: 16 bus info: pci@0000:00:16.0 version: 06 width: 64 bits clock: 33MHz capabilities: pm msi bus_master cap_list configuration: latency=0 resources: memory:fbc09000-fbc0900f *-usb:0 description: USB Controller product: 5 Series/3400 Series Chipset USB2 Enhanced Host Controller vendor: Intel Corporation physical id: 1a bus info: pci@0000:00:1a.0 version: 06 width: 32 bits clock: 33MHz capabilities: pm debug bus_master cap_list configuration: driver=ehci_hcd latency=0 resources: irq:16 memory:fbc08000-fbc083ff *-multimedia description: Audio device product: 5 Series/3400 Series Chipset High Definition Audio vendor: Intel Corporation physical id: 1b bus info: pci@0000:00:1b.0 version: 06 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=HDA Intel latency=0 resources: irq:22 memory:fbc00000-fbc03fff *-pci:0 description: PCI bridge product: 5 Series/3400 Series Chipset PCI Express Root Port 1 vendor: Intel Corporation physical id: 1c bus info: pci@0000:00:1c.0 version: 06 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm bus_master cap_list configuration: driver=pcieport resources: irq:24 ioport:2000(size=4096) memory:bc000000-bc1fffff memory:bc200000-bc3fffff(prefetchable) *-pci:1 description: PCI bridge product: 5 Series/3400 Series Chipset PCI Express Root Port 2 vendor: Intel Corporation physical id: 1c.1 bus info: pci@0000:00:1c.1 version: 06 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm bus_master cap_list configuration: driver=pcieport resources: irq:25 ioport:3000(size=4096) memory:fbb00000-fbbfffff memory:bc400000-bc5fffff(prefetchable) *-network description: Wireless interface product: Broadcom Corporation vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:12:00.0 logical name: eth1 version: 01 serial: c0:cb:38:8b:aa:d8 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=wl0 driverversion=5.60.48.36 ip=10.0.1.50 latency=0 multicast=yes wireless=IEEE 802.11 resources: irq:17 memory:fbb00000-fbb03fff *-pci:2 description: PCI bridge product: 5 Series/3400 Series Chipset PCI Express Root Port 3 vendor: Intel Corporation physical id: 1c.2 bus info: pci@0000:00:1c.2 version: 06 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm bus_master cap_list configuration: driver=pcieport resources: irq:26 ioport:e000(size=4096) memory:fba00000-fbafffff ioport:d0b00000(size=1048576) *-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:13:00.0 logical name: eth0 version: 03 serial: 78:2b:cb:cc:0e:2a size: 10MB/s capacity: 1GB/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10MB/s resources: irq:28 ioport:e000(size=256) memory:d0b04000-d0b04fff(prefetchable) memory:d0b00000-d0b03fff(prefetchable) memory:fba00000-fba1ffff(prefetchable) *-pci:3 description: PCI bridge product: 5 Series/3400 Series Chipset PCI Express Root Port 5 vendor: Intel Corporation physical id: 1c.4 bus info: pci@0000:00:1c.4 version: 06 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm bus_master cap_list configuration: driver=pcieport resources: irq:27 ioport:d000(size=4096) memory:fb000000-fb9fffff ioport:d0000000(size=10485760) *-usb:1 description: USB Controller product: 5 Series/3400 Series Chipset USB2 Enhanced Host Controller vendor: Intel Corporation physical id: 1d bus info: pci@0000:00:1d.0 version: 06 width: 32 bits clock: 33MHz capabilities: pm debug bus_master cap_list configuration: driver=ehci_hcd latency=0 resources: irq:23 memory:fbc07000-fbc073ff *-pci:4 description: PCI bridge product: 82801 Mobile PCI Bridge vendor: Intel Corporation physical id: 1e bus info: pci@0000:00:1e.0 version: a6 width: 32 bits clock: 33MHz capabilities: pci bus_master cap_list *-isa description: ISA bridge product: Mobile 5 Series Chipset LPC Interface Controller vendor: Intel Corporation physical id: 1f bus info: pci@0000:00:1f.0 version: 06 width: 32 bits clock: 33MHz capabilities: isa bus_master cap_list configuration: latency=0 *-storage description: SATA controller product: 5 Series/3400 Series Chipset 6 port SATA AHCI Controller vendor: Intel Corporation physical id: 1f.2 bus info: pci@0000:00:1f.2 logical name: scsi0 logical name: scsi1 version: 06 width: 32 bits clock: 66MHz capabilities: storage msi pm bus_master cap_list emulated configuration: driver=ahci latency=0 resources: irq:29 ioport:f070(size=8) ioport:f060(size=4) ioport:f050(size=8) ioport:f040(size=4) ioport:f020(size=32) memory:fbc06000-fbc067ff *-disk description: ATA Disk product: WDC WD3200BEKT-7 vendor: Western Digital physical id: 0 bus info: scsi@0:0.0.0 logical name: /dev/sda version: 01.0 serial: WD-WX21AC0W1945 size: 298GiB (320GB) capabilities: partitioned partitioned:dos configuration: ansiversion=5 signature=77e3ed41 *-volume:0 description: Windows NTFS volume physical id: 1 bus info: scsi@0:0.0.0,1 logical name: /dev/sda1 version: 3.1 serial: aa69-51c0 size: 98MiB capacity: 100MiB capabilities: primary bootable ntfs initialized configuration: clustersize=4096 created=2012-04-03 02:00:15 filesystem=ntfs label=System Reserved state=clean *-volume:1 description: Windows NTFS volume physical id: 2 bus info: scsi@0:0.0.0,2 logical name: /dev/sda2 version: 3.1 serial: 9854ff5c-1dea-a147-84a6-624e758f44b8 size: 48GiB capacity: 48GiB capabilities: primary ntfs initialized configuration: clustersize=4096 created=2012-04-10 13:55:31 filesystem=ntfs modified_by_chkdsk=true mounted_on_nt4=true resize_log_file=true state=dirty upgrade_on_mount=true *-volume:2 description: Extended partition physical id: 3 bus info: scsi@0:0.0.0,3 logical name: /dev/sda3 size: 48GiB capacity: 48GiB capabilities: primary extended partitioned partitioned:extended *-logicalvolume:0 description: Linux swap / Solaris partition physical id: 5 logical name: /dev/sda5 capacity: 1952MiB capabilities: nofs *-logicalvolume:1 description: Linux filesystem partition physical id: 6 logical name: /dev/sda6 logical name: / capacity: 46GiB configuration: mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,barrier=1,data=ordered state=mounted *-volume:3 description: Windows NTFS volume physical id: 4 bus info: scsi@0:0.0.0,4 logical name: /dev/sda4 logical name: /media/56AA8094AA807273 version: 3.1 serial: 22a29e8d-56c7-9a4a-adea-528103948f6d size: 200GiB capacity: 200GiB capabilities: primary ntfs initialized configuration: clustersize=4096 created=2012-04-02 20:17:15 filesystem=ntfs modified_by_chkdsk=true mount.fstype=fuseblk mount.options=rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096 mounted_on_nt4=true resize_log_file=true state=mounted upgrade_on_mount=true *-cdrom description: DVD-RAM writer product: DVD+-RW TS-L633J vendor: TSSTcorp physical id: 1 bus info: scsi@1:0.0.0 logical name: /dev/cdrom logical name: /dev/cdrw logical name: /dev/dvd logical name: /dev/dvdrw logical name: /dev/scd0 logical name: /dev/sr0 version: D200 capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram configuration: ansiversion=5 status=nodisc *-serial UNCLAIMED description: SMBus product: 5 Series/3400 Series Chipset SMBus Controller vendor: Intel Corporation physical id: 1f.3 bus info: pci@0000:00:1f.3 version: 06 width: 64 bits clock: 33MHz configuration: latency=0 resources: memory:fbc05000-fbc050ff ioport:f000(size=32) *-generic UNCLAIMED description: Signal processing controller product: 5 Series/3400 Series Chipset Thermal Subsystem vendor: Intel Corporation physical id: 1f.6 bus info: pci@0000:00:1f.6 version: 06 width: 64 bits clock: 33MHz capabilities: pm msi bus_master cap_list configuration: latency=0 resources: memory:fbc04000-fbc04fff *-scsi physical id: 2 bus info: usb@2:1.1 logical name: scsi15 capabilities: emulated scsi-host configuration: driver=usb-storage *-disk description: SCSI Disk physical id: 0.0.0 bus info: scsi@15:0.0.0 logical name: /dev/sdb I have tried all options like fdisk /dev/sdb , pmount /dev/sdb but nothing is working .Pls guide me

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  • Have I pushed the limits of my current VPS or is there room for optimization?

    - by JRameau
    I am currently on a mediatemple DV server (basic) 512mb dedicated ram, this is a CentOS based VPS with Plesk and Virtuozzo. My experience with it from day 1 has been bad and I only could sooth my server issues with several caching "Band-aids," but my sites are not as small as they were a year ago either so the issues have worsen. I have 3 Drupal installs running on separate (plesk) domains, 1 of those drupal installs is a multisite, that consists of 5-6 sites 2 of those sites are bringing in actual traffic. Those caching "Band-aids" I mentioned are APC, which seemed to help alot initially, and Drupal's Boost, which is considered a poorman's Varnish, it makes all my pages static for anonymous users. Last 30day combined estimate on Google Ananlytics: 90k visitors 260k pageviews. Issue: alot of downtime, I am continually checking if my sites are up, and lately I have been finding it down more than 3 times daily. Restarting Apache will bring it back up, for some time. I have google search every error message and looked up ways to optimize my DV server, and I am beyond stump what is my next move. Is this server bad, have I hit a impossibly low restriction such as the 12mb kernel memory barrier (kmemsize), is it on my end, do I need to optimize some more? *I have provided as much information as I can below, any help or suggestions given will be appreciated Common Error messages I see in the log: [error] (12)Cannot allocate memory: fork: Unable to fork new process [error] make_obcallback: could not import mod_python.apache.\n Traceback (most recent call last): File "/usr/lib/python2.4/site-packages/mod_python/apache.py", line 21, in ? import traceback File "/usr/lib/python2.4/traceback.py", line 3, in ? import linecache ImportError: No module named linecache [error] python_handler: no interpreter callback found. [warn-phpd] mmap cache can't open /var/www/vhosts/***/httpdocs/*** - Too many open files in system (pid ***) [alert] Child 8125 returned a Fatal error... Apache is exiting! [emerg] (43)Identifier removed: couldn't grab the accept mutex [emerg] (22)Invalid argument: couldn't release the accept mutex cat /proc/user_beancounters: Version: 2.5 uid resource held maxheld barrier limit failcnt 41548: kmemsize 4582652 5306699 12288832 13517715 21105036 lockedpages 0 0 600 600 0 privvmpages 38151 42676 229036 249036 0 shmpages 16274 16274 17237 17237 2 dummy 0 0 0 0 0 numproc 43 46 300 300 0 physpages 27260 29528 0 2147483647 0 vmguarpages 0 0 131072 2147483647 0 oomguarpages 27270 29538 131072 2147483647 0 numtcpsock 21 29 300 300 0 numflock 8 8 480 528 0 numpty 1 1 30 30 0 numsiginfo 0 1 1024 1024 0 tcpsndbuf 648440 675272 2867477 4096277 1711499 tcprcvbuf 301620 359716 2867477 4096277 0 othersockbuf 4472 4472 1433738 2662538 0 dgramrcvbuf 0 0 1433738 1433738 0 numothersock 12 12 300 300 0 dcachesize 0 0 2684271 2764800 0 numfile 3447 3496 6300 6300 3872 dummy 0 0 0 0 0 dummy 0 0 0 0 0 dummy 0 0 0 0 0 numiptent 14 14 200 200 0 TOP: (In January the load avg was really high 3-10, I was able to bring it down where it is currently is by giving APC more memory play around with) top - 16:46:07 up 2:13, 1 user, load average: 0.34, 0.20, 0.20 Tasks: 40 total, 2 running, 37 sleeping, 0 stopped, 1 zombie Cpu(s): 0.3% us, 0.1% sy, 0.0% ni, 99.7% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 916144k total, 156668k used, 759476k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached MySQLTuner: (after optimizing every table and repairing any table with overage I got the fragmented count down to 86) [--] Data in MyISAM tables: 285M (Tables: 1105) [!!] Total fragmented tables: 86 [--] Up for: 2h 44m 38s (409K q [41.421 qps], 6K conn, TX: 1B, RX: 174M) [--] Reads / Writes: 79% / 21% [--] Total buffers: 58.0M global + 2.7M per thread (100 max threads) [!!] Query cache prunes per day: 675307 [!!] Temporary tables created on disk: 35% (7K on disk / 20K total)

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  • Optimization in Python - do's, don'ts and rules of thumb.

    - by JV
    Well I was reading this post and then I came across a code which was: jokes=range(1000000) domain=[(0,(len(jokes)*2)-i-1) for i in range(0,len(jokes)*2)] I thought wouldn't it be better to calculate the value of len(jokes) once outside the list comprehension? Well I tried it and timed three codes jv@Pioneer:~$ python -m timeit -s 'jokes=range(1000000);domain=[(0,(len(jokes)*2)-i-1) for i in range(0,len(jokes)*2)]' 10000000 loops, best of 3: 0.0352 usec per loop jv@Pioneer:~$ python -m timeit -s 'jokes=range(1000000);l=len(jokes);domain=[(0,(l*2)-i-1) for i in range(0,l*2)]' 10000000 loops, best of 3: 0.0343 usec per loop jv@Pioneer:~$ python -m timeit -s 'jokes=range(1000000);l=len(jokes)*2;domain=[(0,l-i-1) for i in range(0,l)]' 10000000 loops, best of 3: 0.0333 usec per loop Observing the marginal difference 2.55% between the first and the second made me think - is the first list comprehension domain=[(0,(len(jokes)*2)-i-1) for i in range(0,len(jokes)*2)] optimized internally by python? or is 2.55% a big enough optimization (given that the len(jokes)=1000000)? If this is - What are the other implicit/internal optimizations in Python ? What are the developer's rules of thumb for optimization in Python? Edit1: Since most of the answers are "don't optimize, do it later if its slow" and I got some tips and links from Triptych and Ali A for the do's. I will change the question a bit and request for don'ts. Can we have some experiences from people who faced the 'slowness', what was the problem and how it was corrected? Edit2: For those who haven't here is an interesting read Edit3: Incorrect usage of timeit in question please see dF's answer for correct usage and hence timings for the three codes.

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  • Design Book–Fourth(last) Section (Physical Abstraction Optimization)

    - by drsql
    In this last section of the book, we will shift focus to the physical abstraction layer optimization. By this I mean the little bits and pieces of the design that is specifically there for performance and are actually part of the relational engine (read: the part of the SQL Server experience that ideally is hidden from you completely, but in 2010 reality it isn’t quite so yet.  This includes all of the data structures like database, files, etc; the optimizer; some coding, etc. In my mind, this...(read more)

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  • Ant Colony Optimization de Marco Dorigo et Thomas Stützle, critique par Franck Dernoncourt

    Bonjour à tous, Voici ma critique du livre "Ant Colony Optimization". Les algorithmes de colonies de fourmis sont des algorithmes inspirés du comportement des fourmis et qui constituent une famille de métaheuristiques d'optimisation. Ils ont été appliqués à un grand nombre de problèmes d'optimisation combinatoire, allant de l'assignement quadratique au replis de protéine ou au routage de véhicules. Comme beaucoup de métaheuristiques, l'algorithme de base a été adapté aux problèmes dynamiques, en variables réelles, aux problèmes stochastiques, multi-objectifs ou aux implémentations parallèles, etc. Bref, c'est une métaheuristique incontournable pour toute pe...

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  • Quality Backlinks - A Key to Search Engine Optimization

    Backlinks are the links which are going to your blogs, sites or articles. Backlinks are the most important and single very significant factors to give the page rank to your site or blogs.They are great technique and way to find a proper and a decent place in the goggle or any of the major search engines. There are many other aspects of SEO but quality back links are the most appropriate way to find a great way in terms of search engine optimization. Now it is the time to take a look at the components which are very important about backlinks.

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  • OpenGL sprites and point size limitation

    - by Srdan
    I'm developing a simple particle system that should be able to perform on mobile devices (iOS, Andorid). My plan was to use GL_POINT_SPRITE/GL_PROGRAM_POINT_SIZE method because of it's efficiency (GL_POINTS are enough), but after some experimenting, I found myself in a trouble. Sprite size is limited (to usually 64 pixels). I'm calculating size using this formula gl_PointSize = in_point_size * some_factor / distance_to_camera to make particle sizes proportional to distance to camera. But at some point, when camera is close enough, problem with size limitation emerges and whole system starts looking unrealistic. Is there a way to avoid this problem? If no, what's alternative? I was thinking of manually generating billboard quad for each particle. Now, I have some questions about that approach. I guess minimum geometry data would be four vertices per particle and index array to make quads from these vertices (with GL_TRIANGLE_STRIP). Additionally, for each vertex I need a color and texture coordinate. I would put all that in an interleaved vertex array. But as you can see, there is much redundancy. All vertices of same particle share same color value, and four texture coordinates are same for all particles. Because of how glDrawArrays/Elements works, I see no way to optimise this. Do you know of a better approach on how to organise per-particle data? Should I use buffers or vertex arrays, or there is no difference because each time I have to update all particles' data. About particles simulation... Where to do it? On CPU or on a vertex processors? Something tells me that mobile's CPU would do it faster than it's vertex unit (at least today in 2012 :). So, any advice on how to make a simple and efficient particle system without particle size limitation, for mobile device, would be appreciated. (animation of camera passing through particles should be realistic)

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  • How To Change Attachment Size in WorkItems in TFS 2010

    - by Ravi
    Recently, I came across an issue where I had to change the size limit for WorkItem Attachments in TFS 2010. I searched all around the internet only to find very little information around it which wasn’t clear honestly. So after breaking my head for sometime, I was successful in doing it. Here are my conclusions and the procedure to do it. 1. You DON’T 'have to' programmatically change it. You can do it directly from IIS webservices. 2. You CAN change it programmatically too, by making an entry into TFS Registry using a small piece of code. Let me show you how it is done from IIS. This is to change the size of attachment to your required value for workItems in TFS 2010 for each collection individually. You must be a TFS Admin to do this ( Login with setup account ) Browse to /WorkItemTracking/v1.0/ConfigurationSettingsService.asmx">/WorkItemTracking/v1.0/ConfigurationSettingsService.asmx">/WorkItemTracking/v1.0/ConfigurationSettingsService.asmx">http://localhost:8080/tfs/<YOUR-COLLECTION-NAME>/WorkItemTracking/v1.0/ConfigurationSettingsService.asmx You’ll see 3 asmx services – GetMaxAttachmentSize, GetWorkItemTrackingVersion and SetMaxAttachmentSize. 4. To know what is the current value of the maximum attachment size for a collection, click on the first service and you’ll the current existing value for this particular collection when you click on ‘invoke’ button. ( value is in bytes ) 5. Now click on the ‘SetMaxAttachmentSize’ webservice and fill in the value of your choice. 6. Reset IIS ( not required honestly, but I did it, just to be sure ) 7. Now try attaching a file greater than the size you’ve set. It’ll fail successfully   Below is the error which you’d see in such scenarios. Let me know if you see any issues & I’ll be happy to help..!

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  • How do I avoid "Developer's Bad Optimization Intuition"?

    - by Mona
    I saw on a article that put forth this statement: Developers love to optimize code and with good reason. It is so satisfying and fun. But knowing when to optimize is far more important. Unfortunately, developers generally have horrible intuition about where the performance problems in an application will actually be. How can a developer avoid this bad intuition? Are there good tools to find which parts of your code really need optimization (for Java)? Do you know of some articles, tips, or good reads on this subject?

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  • All About Search Engine Position Optimization

    Search engine optimization or SEO is a method increasing the amount of traffic or hits to your website, which results in making your website rank high in search engine results. These results are produced whenever an individual types in a keyword or a set of keywords in a search query in search engines like Yahoo!, Google and the like. Being high on the list of search results matters a lot because it makes you more visible to the general public, especially to your target market. This differentiates you from your competitors who may rank low in the search results, or may not even appear in the results lists at all.

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