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  • Android png images big in memory

    - by taivo
    i have an application in android that has an imageflipper. Problem is, after about 8 images loaded to memory, i get an out of memory error. Well, i tried to do dynamic image loading, so that if the user flips 2 images, i'll load next 2 to memory and delete 2 first ones. It kind of works, but it ugly and i have trouble when user flips images back(imageflipper.showprevious()), i can't really shift all images and place new images to the beginning. My question is, is there a better way to do this kind of stuff? Resizing images didn't really help.

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  • How good is the memory mapped Circular Buffer on Wikipedia?

    - by abroun
    I'm trying to implement a circular buffer in C, and have come across this example on Wikipedia. It looks as if it would provide a really nice interface for anyone reading from the buffer, as reads which wrap around from the end to the beginning of the buffer are handled automatically. So all reads are contiguous. However, I'm a bit unsure about using it straight away as I don't really have much experience with memory mapping or virtual memory and I'm not sure that I fully understand what it's doing. What I think I understand is that it's mapping a shared memory file the size of the buffer into memory twice. Then, whenever data is written into the buffer it appears in memory in 2 places at once. This allows all reads to be contiguous. What would be really great is if someone with more experience of POSIX memory mapping could have a quick look at the code and tell me if the underlying mechanism used is really that efficient. Am I right in thinking for example that the file in /dev/shm used for the shared memory always stays in RAM or could it get written to the hard drive (performance hit) at some point? Are there any gotchas I should be aware of? As it stands, I'm probably going to use a simpler method for my current project, but it'd be good to understand this to have it in my toolbox for the future. Thanks in advance for your time.

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  • SQL SERVER – Fix : Error : 3117 : The log or differential backup cannot be restored because no files

    - by pinaldave
    I received the following email from one of my readers. Dear Pinal, I am new to SQL Server and our regular DBA is on vacation. Our production database had some problem and I have just restored full database backup to production server. When I try to apply log back I am getting following error. I am sure, this is valid log backup file. Screenshot is attached. [Few other details regarding server/ip address removed] Msg 3117, Level 16, State 1, Line 1 The log or differential backup cannot be restored because no files are ready to roll forward. Msg 3013, Level 16, State 1, Line 1 RESTORE LOG is terminating abnormally. Screenshot attached. [Removed as it contained live IP address] Please help immediately. Well I have answered this question in my earlier post, 2 years ago, over here SQL SERVER – Fix : Error : Msg 3117, Level 16, State 4 The log or differential backup cannot be restored because no files are ready to rollforward. However, I will try to explain it a little more this time. For SQL Server database to be used it should in online state. There are multiple states of SQL Server Database. ONLINE (Available – online for data) OFFLINE RESTORING RECOVERING RECOVERY PENDING SUSPECT EMERGENCY (Limited Availability) If the database is online, it means it is active and in operational mode. It will not make sense to apply further log from backup if the operations have continued on this database. The common practice during the backup restore process is to specify the keyword RECOVERY when the database is restored. When RECOVERY keyword is specified, the SQL Server brings back the database online and will not accept any further log backups. However, if you want to restore more than one backup files, i.e. after restoring the full back up if you want to apply further differential or log backup you cannot do that when database is online and already active. You need to have your database in the state where it can further accept the backup data and not the online data request. If the SQL Server is online and also accepts database backup file, then there can be data inconsistency. This is the reason that when there are more than one database backup files to be restored, one has to restore the database with NO RECOVERY keyword in the RESTORE operation. I suggest you all to read one more post written by me earlier. In this post, I explained the time line with image and graphic SQL SERVER – Backup Timeline and Understanding of Database Restore Process in Full Recovery Model. Sample Code for reference: RESTORE DATABASE AdventureWorks FROM DISK = 'C:\AdventureWorksFull.bak' WITH NORECOVERY; RESTORE DATABASE AdventureWorks FROM DISK = 'C:\AdventureWorksDiff.bak' WITH RECOVERY; In this post, I am not trying to cover complete backup and recovery. I am just attempting to address one type of error and its resolution. Please test these scenarios on the development server. Playing with live database backup and recovery is always very crucial and needs to be properly planned. Leave a comment here if you need help with this subject. Similar Post: SQL SERVER – Restore Sequence and Understanding NORECOVERY and RECOVERY Note: We will cover Standby Server maintenance and Recovery in another blog post and it is intentionally, not covered this post. Reference : Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, Readers Question, SQL, SQL Authority, SQL Backup and Restore, SQL Error Messages, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • Why the Enter key in a Mac keyboard is mapped to Level?

    - by Anentropic
    Just installing Ubuntu for the first time, glad to ditch Win 7. I have a KVM switch and also a Mac, hence I'm using a Mac keyboard (the full size alu one) Everything's pretty cool. First thing I wondered is why the numeric keypad doesn't work? Oh, I have to find the num lock key (which should default to on, sensibly, no?) which isn't labelled as such on a Mac keyboard. Ok no problem. Then for some reason the Enter key on the keypad doesn't work still. Check the keyboard layout (set to 'English UK Macintosh')... inspecting the layout the Enter key is mapped to something called 'Level' - WTF is 'Level'? Everything else about the keyboard works great ie the £ $ # @ " are all perfect, volume control works as expected... why this weird key mapping on the Enter key? More importantly... how do I change it to work as an Enter key ?

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  • Organization &amp; Architecture UNISA Studies &ndash; Chap 5

    - by MarkPearl
    Learning Outcomes Describe the operation of a memory cell Explain the difference between DRAM and SRAM Discuss the different types of ROM Explain the concepts of a hard failure and a soft error respectively Describe SDRAM organization Semiconductor Main Memory The two traditional forms of RAM used in computers are DRAM and SRAM DRAM (Dynamic RAM) Divided into two technologies… Dynamic Static Dynamic RAM is made with cells that store data as charge on capacitors. The presence or absence of charge in a capacitor is interpreted as a binary 1 or 0. Because capacitors have natural tendency to discharge, dynamic RAM requires periodic charge refreshing to maintain data storage. The term dynamic refers to the tendency of the stored charge to leak away, even with power continuously applied. Although the DRAM cell is used to store a single bit (0 or 1), it is essentially an analogue device. The capacitor can store any charge value within a range, a threshold value determines whether the charge is interpreted as a 1 or 0. SRAM (Static RAM) SRAM is a digital device that uses the same logic elements used in the processor. In SRAM, binary values are stored using traditional flip flop logic configurations. SRAM will hold its data as along as power is supplied to it. Unlike DRAM, no refresh is required to retain data. SRAM vs. DRAM DRAM is simpler and smaller than SRAM. Thus it is more dense and less expensive than SRAM. The cost of the refreshing circuitry for DRAM needs to be considered, but if the machine requires a large amount of memory, DRAM turns out to be cheaper than SRAM. SRAMS are somewhat faster than DRAM, thus SRAM is generally used for cache memory and DRAM is used for main memory. Types of ROM Read Only Memory (ROM) contains a permanent pattern of data that cannot be changed. ROM is non volatile meaning no power source is required to maintain the bit values in memory. While it is possible to read a ROM, it is not possible to write new data into it. An important application of ROM is microprogramming, other applications include library subroutines for frequently wanted functions, System programs, Function tables. A ROM is created like any other integrated circuit chip, with the data actually wired into the chip as part of the fabrication process. To reduce costs of fabrication, we have PROMS. PROMS are… Written only once Non-volatile Written after fabrication Another variation of ROM is the read-mostly memory, which is useful for applications in which read operations are far more frequent than write operations, but for which non volatile storage is required. There are three common forms of read-mostly memory, namely… EPROM EEPROM Flash memory Error Correction Semiconductor memory is subject to errors, which can be classed into two categories… Hard failure – Permanent physical defect so that the memory cell or cells cannot reliably store data Soft failure – Random error that alters the contents of one or more memory cells without damaging the memory (common cause includes power supply issues, etc.) Most modern main memory systems include logic for both detecting and correcting errors. Error detection works as follows… When data is to be read into memory, a calculation is performed on the data to produce a code Both the code and the data are stored When the previously stored word is read out, the code is used to detect and possibly correct errors The error checking provides one of 3 possible results… No errors are detected – the fetched data bits are sent out An error is detected, and it is possible to correct the error. The data bits plus error correction bits are fed into a corrector, which produces a corrected set of bits to be sent out An error is detected, but it is not possible to correct it. This condition is reported Hamming Code See wiki for detailed explanation. We will probably need to know how to do a hemming code – refer to the textbook (pg. 188 – 189) Advanced DRAM organization One of the most critical system bottlenecks when using high-performance processors is the interface to main memory. This interface is the most important pathway in the entire computer system. The basic building block of main memory remains the DRAM chip. In recent years a number of enhancements to the basic DRAM architecture have been explored, and some of these are now on the market including… SDRAM (Synchronous DRAM) DDR-DRAM RDRAM SDRAM (Synchronous DRAM) SDRAM exchanges data with the processor synchronized to an external clock signal and running at the full speed of the processor/memory bus without imposing wait states. SDRAM employs a burst mode to eliminate the address setup time and row and column line precharge time after the first access In burst mode a series of data bits can be clocked out rapidly after the first bit has been accessed SDRAM has a multiple bank internal architecture that improves opportunities for on chip parallelism SDRAM performs best when it is transferring large blocks of data serially There is now an enhanced version of SDRAM known as double data rate SDRAM or DDR-SDRAM that overcomes the once-per-cycle limitation of SDRAM

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  • Convert old AVI files to a modern format

    - by iWerner
    Hi, we have a collection of old home videos that were saved in AVI format a long time ago. I want to convert these files to a more modern format because the Totem Movie Player that comes with Ubuntu 10.4 seems to be the only program capable of playing them. The files seem to be encoded with a MJPEG codec, and playing them in VLC or Windows Media Player plays only the sound but there is no video. Avidemux was able to open the files, but the quality of the video is severely degraded: The video skips frames and is interlaced (it's not interlaced when playing it in Totem). Neither ffmpeg nor mencoder seems to be able to read the video stream. mencoder reports that it is using ffmpeg's codec. Here's a section from its output: ========================================================================== Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family [mjpeg @ 0x92a7260]mjpeg: using external huffman table [mjpeg @ 0x92a7260]mjpeg: error using external huffman table, switching back to internal Unsupported PixelFormat -1 Selected video codec: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG) while running ffmpeg produces the following: $ ffmpeg -i input.avi output.avi FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: --extra-version=4:0.5.1-1ubuntu1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static libavutil 49.15. 0 / 49.15. 0 libavcodec 52.20. 1 / 52.20. 1 libavformat 52.31. 0 / 52.31. 0 libavdevice 52. 1. 0 / 52. 1. 0 libavfilter 0. 4. 0 / 0. 4. 0 libswscale 0. 7. 1 / 0. 7. 1 libpostproc 51. 2. 0 / 51. 2. 0 built on Mar 4 2010 12:35:30, gcc: 4.4.3 [avi @ 0x87952c0]non-interleaved AVI Input #0, avi, from 'input.avi': Duration: 00:00:15.24, start: 0.000000, bitrate: 22447 kb/s Stream #0.0: Video: mjpeg, yuvj422p, 720x544, 25 tbr, 25 tbn, 25 tbc Stream #0.1: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s Output #0, avi, to 'output.avi': Stream #0.0: Video: mpeg4, yuv420p, 720x544, q=2-31, 200 kb/s, 90k tbn, 25 tbc Stream #0.1: Audio: mp2, 44100 Hz, stereo, s16, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press [q] to stop encoding frame= 0 fps= 0 q=0.0 Lsize= 143kB time=15.23 bitrate= 76.9kbits/s video:0kB audio:119kB global headers:0kB muxing overhead 20.101777% So the problem is that output does not contain any video, as evidenced by the video:0kB at the end. In all of the above cases the audio comes out fine. So my question is: What can I do to convert these files to a more modern format with more modern codecs?

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  • SOA Suite Integration: Part 3: Loading files

    - by Anthony Shorten
    One of the most common scenarios in SOA Integration is the loading of a file into the product from an external source. In Oracle SOA Suite there is a File Adapter that can process many file types into your BPEL process. For this example I will use the File Adapter to load a file of user and emails to update the user object within the Oracle Utilities Application Framework. Remember you can repeat this process with other objects and other file types. Again I am illustrating the ease of integration. The first thing is to create an empty BPEL process that will hold our flow. In Oracle JDeveloper this can be achieved by specifying the Define Service Later template (as other templates have predefined inputs and outputs and in this case we want to specify those). So I will create simpleFileLoad process to house our process. You will start with an empty canvas so you need to first specify the load part of the process using the File Adapter. Select the File Adapter from the Component Palette under BPEL Services and drag and drop it to the left side Partner Links (left is input). You name the Service. In this case I chose LoadFile. Press Next. We will define the interface as part of the wizard so select Define from operation and schema (specified later). Press Next. We are going to choose Read File to denote that we will read the file and specify the default Operation Name as Read. Press Next. The next step is to tell the Adapter the location of the files, how to process them and what to do with them after they have been processed. I am using hardcoded locations in this example but you can have logical locations as well. Press Next. I am now going to tell the adapter how to recognize the files I want to load. In my case I am using CSV files and more importantly I am tell the adapter to run the process for each record in the file it encounters. Press Next. Now, I tell the adapter how often I want to poll for the files. I have taken the defaults. Press Next. At this stage I have no explanation of the format of the input. So I am going to invoke the Native Format Wizard which will guide me through the process of creating the file input format. Clicking the purple cog icon will start the wizard. After an introduction screen (not shown), you specify the format of the input file. The File Adapter supports multiple format types. For this example, I will use Delimited as I am going to load a CSV file. Press Next. The best way for the wizard to work is with a sample. I have a sample file and the wizard will ask how much of the file to use as a template. I will use the defaults. Note: If you are using a language that has other languages other than US-ASCII, it is at this point you specify the character set to use.  Press Next. The sample contains multiple instances of a single record type. The wizard supports complex types as well. We will use the appropriate setting for our file. Press Next. You have to specify the file element and the record element. This will be used by the input wizard to translate the CSV data into an XML structure (this will make sense later). I am using LoadUsers as my file delimiter (root element) and User Record as my record root element. Press Next. As the file is CSV the delimiter is "," so I will also specify that the End Of Line (EOL) indicator indicates the end of a record. Press Next. Up until this point your have not given the columns their names. In my case my sample includes the column names in the first record. This is not always the case but you can specify the names and formats of columns in this dialog (not shown). Press Next. The wizard now generates the schema for the input file. You can specify a name for the schema. I have used userupdate.xsd. We want to verify the schema so press Test. You can test the schema by specifying an input sample. and pressing the green play button. You will see the delimiters you specified earlier for the file and the records. Press Ok to continue. A confirmation screen will be displayed showing you the location of the schema in your project. Press Finish to return to the File Adapter configuration. You will now see the schema and elements prepopulated from the wizard. Press Next. The File Adapter configuration is now complete. Press Finish. Now you need to receive the input from the LoadFile component so we need to place a Receive node in the BPEL process by drag and dropping the Receive component from the Component Palette under BPEL Constructs onto the BPEL process. We link the receive process with the LoadFile component by dragging the left most connect node of the Receive node to the LoadFile component. Once the link is established you need to name the Receive node appropriately and as in the post of the last part of this series you need to generate input variables for the BPEL process to hold the input records in. You need to now add the product Web Service. The process is the same as described in the post of the last part of this series. You drop the Web Service BPEL Service onto the right side of the process and fill in the details of the WSDL URL . You also have to add an Invoke node to call the service and generate the input and outputs variables for the call in the Invoke node. Now, to get the inputs from File to the service. You have to use a Transform (you can use an Assign action but a Transform action is more flexible). You drag and drop the Transform component from the Component Palette under Oracle Extensions and place it between the Receive and Invoke nodes. We name the Transform Node, Mapper File and associate the source of the mapping the schema from the Receive node and the output will be the input variable from the Invoke node. We now build the transform. We first map the user and email attributes by drag and drop the elements from the left to the right. The reason we needed to use the transform is that we will be telling the AS-User service that we want to issue an update action. Remember when we registered the service we actually used Read as the default. If we do not otherwise inform the service to use the Update action it will use the Read action instead (which is not desired). To specify the update action you need to click on the transactionType node on the right and select Set Text to set the action. You need to specify the transactionType of UPD (for update). The mapping is now complete. The final BPEL process is ready for deployment. You then deploy the BPEL process to the server and to test the service by simply dropping a file, in the same pattern/name as you specified, in the directory you specified in the File Adapter. You will see each record as a separate instance entry in the Fusion Middleware Control console. You can now load files into the product. You can repeat this process for each type of file to process. While this was a simple example it illustrates the method of loading data can be achieved using SOA Suite in conjunction with our products.

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  • Constant Memory Leak in SpeechSynthesizer

    - by DudeFX
    I have developed a project which I would like to release which uses c#, WPF and the System.Speech.Synthesizer object. The issue preventing the release of this project is that whenever SpeakAsync is called it leaves a memory leak that grows to the point of eventual failure. I believe I have cleaned up properly after using this object, but cannot find a cure. I have run the program through Ants Memory Profiler and it reports that WAVEHDR and WaveHeader is growing with each call. I have created a sample project to try to pinpoint the cause, but am still at a loss. Any help would be appreciated. The project uses VS2008 and is a c# WPF project that targets .NET 3.5 and Any CPU. You need to manually add a reference to System.Speech. Here is the Code: <Window x:Class="SpeechTest.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300"> <Grid> <StackPanel Orientation="Vertical"> <Button Content="Start Speaking" Click="Start_Click" Margin="10" /> <Button Content="Stop Speaking" Click="Stop_Click" Margin="10" /> <Button Content="Exit" Click="Exit_Click" Margin="10"/> </StackPanel> </Grid> // Start of code behind using System; using System.Windows; using System.Speech.Synthesis; namespace SpeechTest { public partial class Window1 : Window { // speak setting private bool speakingOn = false; private int curLine = 0; private string [] speakLines = { "I am wondering", "Why whenever Speech is called", "A memory leak occurs", "If you run this long enough", "It will eventually crash", "Any help would be appreciated" }; public Window1() { InitializeComponent(); } private void Start_Click(object sender, RoutedEventArgs e) { speakingOn = true; SpeakLine(); } private void Stop_Click(object sender, RoutedEventArgs e) { speakingOn = false; } private void Exit_Click(object sender, RoutedEventArgs e) { App.Current.Shutdown(); } private void SpeakLine() { if (speakingOn) { // Create our speak object SpeechSynthesizer spk = new SpeechSynthesizer(); spk.SpeakCompleted += new EventHandler(spk_Completed); // Speak the line spk.SpeakAsync(speakLines[curLine]); } } public void spk_Completed(object sender, SpeakCompletedEventArgs e) { if (sender is SpeechSynthesizer) { // get access to our Speech object SpeechSynthesizer spk = (SpeechSynthesizer)sender; // Clean up after speaking (thinking the event handler is causing the memory leak) spk.SpeakCompleted -= new EventHandler(spk_Completed); // Dispose the speech object spk.Dispose(); // bump it curLine++; // check validity if (curLine = speakLines.Length) { // back to the beginning curLine = 0; } // Speak line SpeakLine(); } } } } I run this program on Windows 7 64 bit and it will run and eventually halt when attempting to create a new SpeechSynthesizer object. When run on Windows Vista 64 bit the memory will grow from a starting point of 34k to so far about 400k and growing. Can anyone see anything in the code that might be causing this, or is this an issue with the Speech object itself. Any help would be appreciated.

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  • VPS 512 MB RAM with WordPressMU comes to consumes lots of memory

    - by CAPitalZ
    I have googled for days and gathered all optimization suggestions and tried. My sites are not getting any high hits. May be like 100 hits per day [all my sites combined]. Here are my specs I have 512 MB RAM VPS with burstable 1024 MB. Centos 5 32-bit & cPanel/WHM Apache 2.2 MySQL 5.0 PHP 5.3.2 Here is my Configs I have 2 WordPressMU production sites, and 1 test site my.cnf # The following options will be passed to all MySQL clients [client] #password = your_password port = 3306 socket = /var/lib/mysql/mysql.sock # Here follows entries for some specific programs # The MySQL server [mysqld] port = 3306 socket = /var/lib/mysql/mysql.sock skip-locking skip-bdb skip-innodb key_buffer = 16M max_allowed_packet = 1M table_cache = 64 sort_buffer_size = 512K net_buffer_length = 8K read_buffer_size = 256K read_rnd_buffer_size = 512K myisam_sort_buffer_size = 8M #CAPitalZ thread_cache_size=8 thread_concurrency=4 #query_cache_type=1 #query_cache_limit=1M query_cache_size=16M concurrent_insert=2 low_priority_updates=1 max_connections=50 tmp_table_size=16M max_heap_table_size=16M join_buffer_size=1M interactive_timeout=25 wait_timeout=1000 #connect_timout=10 not able to restart mysql max_connect_errors=10 # Don't listen on a TCP/IP port at all. This can be a security enhancement, # if all processes that need to connect to mysqld run on the same host. # All interaction with mysqld must be made via Unix sockets or named pipes. # Note that using this option without enabling named pipes on Windows # (via the "enable-named-pipe" option) will render mysqld useless! # skip-networking # Disable Federated by default skip-federated # Replication Master Server (default) # binary logging is required for replication log-bin=mysql-bin # required unique id between 1 and 2^32 - 1 # defaults to 1 if master-host is not set # but will not function as a master if omitted server-id = 1 [mysqld_safe] open_files_limit=8192 [mysqldump] quick max_allowed_packet = 16M [mysql] no-auto-rehash # Remove the next comment character if you are not familiar with SQL #safe-updates [isamchk] key_buffer = 20M sort_buffer_size = 20M read_buffer = 2M write_buffer = 2M [myisamchk] key_buffer = 20M sort_buffer_size = 20M read_buffer = 2M write_buffer = 2M [mysqlhotcopy] interactive-timeout httpd.conf I have unselected many modules and recompiled using EasyApache in WHM. Only have the following modules built Deflate Expires Fileprotect Imagemap MPM Prefork Version [default] EAccelerator for PHP Bcmath Calendar CurlSSL [I'm using Curl. But I don't have any https sites] Expat GD [for image cropping] Gettext Imap Mbregex [default] Mbstring [need both Mbregex and Mbstring for utf-8] Mysql of the system MySQL "Improved" extension. Sockets TTF (FreeType) [I'm using custom font] Zlib Under Global Configuration I only have FollowSymLinks enabled I Have TraceEnable, ServerSignature, FileETag OFF ServerTokens ProductOnly DirectoryIndex Priority has index.php as the first one I have removed Clamd [Clam Anti-virus] SpamAssasin is Off Under Tweak Settings Default catch-all/default address behavior for new accounts. This is set to "fail" All stats programs turned off I have eAccelerator installed and checked in phpinfo and its working [Pre VirtualHost Include under WHM] Timeout 20 KeepAlive On MaxKeepAliveRequests 200 KeepAliveTimeout 3 MinSpareServers 1 MaxSpareServers 3 StartServers 1 ServerLimit 50 MaxClients 50 MaxRequestsPerChild 4000 ExtendedStatus Off #ServerType standalone this throws error HostnameLookups Off <Directory "/"> AllowOverride None </Directory> My sites will take ages to load and WHM/CPanel will not even load. adadaa.com/ http://adadaa.net/ kadais.ca/ My average memory consumption is like 1000 MB! [yes always bursting] The process that consumes most CPU and also most memory is mysql But I also get like 15 httpd processes [when its bursting] I already got warning from cpuwatchcheck saying "While processing, the cpu has been maxed out for more than a 6 hour period. The current load/uptime line on the server at the time of this email is 07:00:37 up 11:30, 0 users, load average: 14.64, 16.79, 20.07" I don't know, I have tried switching these config values many different times, but nothing seems to work. Please show some light... Thanks

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  • SQL Server Log File Size Management

    - by Rob
    I have all my databases in full recovery and have the log backups happening every 15 minutes so my log files are usually pretty small. question is if there is a nightly operation that causes lots of transactions to happen and causes my log files to grow, should i shrink them back down afterward? Does having a gigantic log file negatively affect the database performance? Disk space isn't an issue at this time.

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  • Can I choose a sparse file as vdev for a zfs pool?

    - by Karl Richter
    man zpool states that a vdev for a zfs pool can be a "regular file". Can I specify a sparse file (the warning about the integrity of the file being determined by the underlying filesystem should apply with the same relevance for a sparse file)? The ZFS administration guide on https://pthree.org/2012/12/04/zfs-administration-part-i-vdevs/ states that file vdevs "must be preallocated, and not sparse files or thin provisioned" (thanks to @jlliagre). On https://wiki.archlinux.org/index.php/Experimenting_with_ZFS sparse files are used without any comment.

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  • IIS 7.5 log to: sql server vs file

    - by stacker
    I want to know if get IIS to log directly to the sql server is resource costive, and a better solution maybe generate log files, and each hour import this files to sql server. Does it VERY big cost to log to sql server each request directly? The pages are open connection to the database anyway for each request.

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  • Monitor File Changes On Windows System

    - by user10487
    I am looking for a utility that can take a snapshot of the files in directories that I am interested in and then compare that snapshot to the current state of the system and show me any files that have been added, changed, or deleted. Does anyone know of solutions that provide this functionality? Thanks, Nate

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  • How to prevent a file from accessing the internet

    - by Mehper C. Palavuzlar
    There are some exe and dll files belonging to some programs on my laptop which communicate with the internet without my permission (for self-update generally). I want to prevent those files one by one from accessing the internet. I don't want to install any external firewalls. I'm using Windows 7 Home Pro and if this can be done by Windows Firewall, it's OK. I took a look at Windows Firewall but couldn't find a setting to disable file access.

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  • Saving UIImagePickerController images to Core Data without crashing

    - by Gordon Fontenot
    I have been trying to minimize my memory footprint with UIImagePickerController, but I'm starting to think that the memory problems I am having are resulting from poor memory management, instead of a particular way to handle the UIImagePickerController object. My workflow is this: The "Edit Image" button is clicked, which presents a UIActionSheet. This action sheet allows you to delete, take a picture, choose from the library, or cancel. If you select Choose from the library or Take Picture, I alloc an instance of UIImagePickerController and present it, followed by a release of UIImagePickerController: -(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { if (actionSheet.tag != 999) { UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init]; imagePicker.delegate = self; BOOL pickImage = nil; if (actionSheet.tag == iPhoneWithDelete) { switch (buttonIndex) { case 0: object.objectImage = nil; pickImage = NO; break; case 1: imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; pickImage = YES; break; case 2: imagePicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum; pickImage = YES; break; default: pickImage = NO; break; } } else if (actionSheet.tag == iPhoneNoDelete) { switch (buttonIndex) { case 0: imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; pickImage = YES; break; case 1: imagePicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum; pickImage = YES; break; default: pickImage = NO; break; } } else if (actionSheet.tag == iPodWithDelete) { switch (buttonIndex) { case 0: object.objectImage = nil; pickImage = NO; break; case 1: imagePicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum; pickImage = YES; break; default: pickImage = NO; break; } } else if (actionSheet.tag == iPodNoDelete) { switch (buttonIndex) { case 0: imagePicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum; pickImage = YES; break; default: pickImage = NO; break; } } if (pickImage) { imagePicker.allowsEditing = YES; [self presentModalViewController:imagePicker animated:YES]; } else { [self setupImageButton]; [self setupChooseImageButton]; } [imagePicker release]; } } Once I get a selection back from the UIImagePickerController, I save 2 images, a resized version of the edited image to use for a thumbnail, and a 800x600 version of the original unedited image into a relationship attribute (Transformational, using the same UIImage to PNG transformations found in the Recipes demo code) for display use: (the resize methods are based on the one demoed in this SO post.) - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { [self dismissModalViewControllerAnimated:YES]; NSManagedObject *oldImage = object.imageFull; if (oldImage != nil) { [object.managedObjectContext deleteObject:oldImage]; } NSManagedObject *image = [NSEntityDescription insertNewObjectForEntityForName:@"Image" inManagedObjectContext:object.managedObjectContext]; object.imageFull = image; UIImage *rawImage = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; CGSize size = CGSizeMake(800, 600); UIImage *fullImage = [UIImageManipulator scaleImage:rawImage toSize:size]; [image setValue:fullImage forKey:@"imageFull"]; UIImage *processedImage = [UIImageManipulator scaleImage:[info objectForKey:@"UIImagePickerControllerEditedImage"] toSize:CGSizeMake(75, 75)]; object.objectImage = processedImage; [self setupImageButton]; [self setupChooseImageButton]; rawImage = nil; fullImage = nil; processedImage = nil; } When I go through viewDidUnload I am setting self.object = nil, and [object release] during dealloc, but I'm still getting memory warnings after about 10 image changes, with a crash at around 20. It leads me to believe that I am not getting that full image out of memory the correct way. What am I missing here? And on a second note, does the Camera source use significantly more memory than the Photo Albums source? I tend to get more crashes when using the camera.

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  • How to stop Excel 2003 from loading a Gazillion files

    - by Gary M. Mugford
    One of my soon-to-be-ex-friends got an Excel file from another friend of his and decided to click on it. It started opening all kinds of files from within Excel. Over 200 and still counting when he called me. I told him to go to task manager, which showed a LOT of files in the applications tab, but only one Excel.exe in the processes tab. Closing it down there, closed down Excel. I then CrossLooped in to see if I could give him a helping hand. Each time Excel was re-opened, the mass influx of files started. They were all kinds of files, PDFs, Docs, JPGs, even some spreadsheets. It looked like the end of solitaire, with multiple windows opening (XP) and the counter on the lone Excel button on the task bar counting off the files. I did the task manager exit routine and went looking for temp files. I CrapCleaned out the system. Made sure I went through the files created in the last hour and deleted anything with a temp anywhere in it. I also deleted the crappy infected/corrupted file from it's place on the desktop (yeah, I know, I yelled for 15 minutes on THAT subject). Despite a delousing, the restart of Excel, which complained of a deactivated add-in, would start the cascading windows, whether I answered yes or no to that question. Yes, it knew it had a serious crash, but why would it just keep on trying to load the bad file, even when I got rid of it? But here's the real question. WHERE was it loading from? I went through the backup folder and NOTHING was there! So what's the process for starting Excel WITHOUT it trying to do a crash recovery? Sort of makes me feel stupid at times. Thanks for any light you can shed on this issue. GM

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  • Preventing access to files if a user types the full url on the address bar

    - by bogha
    i have a website, some folders on the websites contains images and files like .pdf , .doc and .docx . the user can easly just type the address in the url to get the file or display the photo http://site/folder1/img/pic1.jpg then boom.. he can see the image or just download the file my question is: how to prevent this kind of action, how can i guarantee a secure access of the files. any suggestions UPDATE TO CLARIFY MY IDEA i don't want any user who is browsing the website to get access to these files normally by just writing the URL of the file. those files are a CV files, they are being uploaded by the users to a specific folder on the server which we host outside the company. those files are only being viewed by the HR people through a special system. that's the scenario we want. i don't want a WEB GEEK who just wants to see what files has been uploaded to this folder to download them easly to his/her computer and view them or publish them on the internet. i hope you got my idea

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  • Cannot open files in Visual Studio but in Delphi and Notepad

    - by Andrew J. Brehm
    About an hour ago Visual Studio 2008 decided that it cannot find files any more. This is on 64 bit Windows Vista. When I right-click on a text file (source code or otherwise) and select "open with" and "Visual Studio 2008", I get the following error (example): Windows cannot find 'C:\Users\ajbrehm\Documents\Visual Studio 2008\Projects\Hello Prism\Hello Prism\Main.pas'. Make sure you typed the name correctly, and then try again. When I right-click the same file and select "open with" and "Delphi 2010" or "Notepad" (both other options available for text files on my system), the file opens correctly. Oddly enough when the file is part of a Visual Studio project and I open the project itself with Visual Studio (this works), I can open the file from within Visual Studio. Any ideas what might be going on? This started about an hour after I made a complete backup of my Vista VM and after I installed IIS 7, SQL Express, and Sourcegear Vault. The first files I noticed couldn't be opened in Visual Studio any more where Pascal source files in checked-outed folders from Vault. And Vault also seems to be unable to see one of the sources files and claims they don't exist. I found out about Visual Studio not opening ANY files any more when I tried to recreate the file Vault refused to see. Update: I just checked. Another user, "administrator", can still open text files with Visual Studio 2008. Both users have administrator rights. Update: I just restored the hours-old backup. Same problem. Apparently whatever triggered this happened before the install of IIS 7 and SQL Express. Never noticed it before.

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  • Archive software for big files and fast index

    - by AkiRoss
    I'm currently using tar for archiving some files. Problem is: archives are pretty big, contains many data and tar is very slow when listing and extracting. I often need to extract single files or folders from the archive, but I don't currently have an external index of files. So, is there an alternative for Linux, allowing me to build uncompressed archive files, preserving the file attributes AND having fast access list table? I'm talking about archives of 10 to 100 GB, and it's pretty impractical to wait several minutes to access a single file. Anyway, any trick to solve this problem is welcome (but single archives are non-optional, so no rsync or similar). Thanks in advance! EDIT: I'm not compressing archives, and using tar I think they are too slow. To be precise about "slow", I'd like that: listing archive content should take time linear in files count inside the archive, but with very little constant (e.g. if a list of all the files is included at the head of the archive, it could be very fast). extraction of a target file/directory should (filesystem premitting) take time linear with the target size (e.g. if I'm extracting a 2MB PDF file in a 40GB directory, I'd really like it to take less than few minutes... If not seconds). Of course, this is just my idea and not a requirement. I guess such performances could be achievable if the archive contained an index of all the files with respective offset and such index is well organized (e.g. tree structure).

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  • Powershell script to delete sub folders and files if creation date is >7 days but maintain parent folders of sub folders and files <7 days old

    - by Mark
    I'm currently using the Powershell script below to delete all files directories and sub directories of "$dump_path" that are seven days or older based upon the creation date and not modified date. The problem with this script is this: If folder "A" is seven (or more) days old it will be deleted even if its sub folders and files are less then seven days old. What I would like this script to do is this: Delete all files from the root and in all sub folders of "$dump_path" that are seven or more days old but maintain the parent folder(s) of files and folders that are less than seven days old even if that means the parent folders are more than seven days old. If all subfolders and files are seven days or older than the parent folder then the parent can be deleted. Slightly obscure problem I know, but the intention is to have a 7 day retention period of all data in a 'sandbox' location of our shared areas. Also, an added bonus if it could generate a log of what it deletes and e-mails it out post deletion. Thank you for reading and I hope that all makes sense! Mark # set folder path $dump_path = "c:\temp" # set minimum age of files and folders $max_days = "-7" # get the current date $curr_date = Get-Date # determine how far back we go based on current date $del_date = $curr_date.AddDays($max_days) # delete the files and folders Get-ChildItem $dump_path | Where-Object { $_.CreationTime -lt $del_date } | Remove-Item -Recurse

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  • how to properly set environment variables

    - by avorum
    I've recently started using Windows (having used Ubuntu up until now) and I find myself unable to properly set environment variables. Whenever I set them they don't seem to work. I've been going to Start-Edit Environment Variables for your Account and editing the PATH value in the upper half of the GUI. Here's what I've got so far. ;C:\Chocolatey\bin;C:\tools\mysql\current\bin;C:\Program Files (x86)\Git\bin;C:\Program Files\MySQL\MySQL Server 5.6\bin\;C:\Python33\Scripts; These are each the parent directories of the executables I'd like to be able to run by name from CMD, but mysql, git, and pip aren't being recognized. Am I doing something wrong syntactically or at a general understanding level? I'd like to be able to run these commands without having to specify the full path to the executables every time. EDIT: The full PATH extracted from CMD PATH=C:\Python33\;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files (x86)\AMD APP\bin\x86_64;C:\Program Files (x86)\AMD APP\bin\x86;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\GTK2-Runtime\bin;C:\Program Files\WIDCOMM\Bluetooth Software\;C:\Program Files\WIDCOMM\Bluetooth Software\syswow64;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\;C:\Program Files\Microsoft SQL Server\110\Tools\Binn\;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Program Files (x86)\Common Files\Acronis\SnapAPI\;C:\Program Files (x86)\Java\jre7\bin;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\;C:\Program Files (x86)\Microsoft SDKs\TypeScript\;C:\Program Files (x86)\MySQL\MySQL Utilities 1.3.4\; ;C:\Chocolatey\bin;C:\tools\mysql\current\bin I'm being forced to use Windows by my work environment, I don't enjoy the state of affairs.

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  • limits.conf to set memory limits

    - by Rupert Jipe
    I would like to limit any process from using more than 500 MB of RAM. AFAIK this is done using RSS in /etc/security/limits.conf but the process called gnome-panel apparently is using 618436 kB of VmRSS. How can this be ? /etc/security/limits.conf * hard rss 512000 username@debian:~$ cat /proc/3002/status Name: gnome-panel State: S (sleeping) Tgid: 3002 Pid: 3002 PPid: 2910 TracerPid: 0 Uid: 1000 1000 1000 1000 Gid: 1000 1000 1000 1000 FDSize: 64 Groups: 20 24 25 29 44 46 112 116 117 1000 1002 1003 VmPeak: 916636 kB VmSize: 916636 kB VmLck: 0 kB VmHWM: 618436 kB VmRSS: 618436 kB VmData: 601972 kB VmStk: 104 kB VmExe: 516 kB VmLib: 29232 kB VmPTE: 1760 kB Threads: 1 SigQ: 0/14001 SigPnd: 0000000000000000 ShdPnd: 0000000000000000 SigBlk: 0000000000000000 SigIgn: 0000000020001000 SigCgt: 0000000180000000 CapInh: 0000000000000000 CapPrm: 0000000000000000 CapEff: 0000000000000000 CapBnd: ffffffffffffffff Cpus_allowed: 3 Cpus_allowed_list: 0-1 Mems_allowed: 00000000,00000001 Mems_allowed_list: 0 voluntary_ctxt_switches: 871965 nonvoluntary_ctxt_switches: 47553 PaX: PeMRs username@debian:~$ cat /proc/3002/limits Limit Soft Limit Hard Limit Units Max cpu time unlimited unlimited seconds Max file size unlimited unlimited bytes Max data size unlimited unlimited bytes Max stack size 8388608 unlimited bytes Max core file size 0 0 bytes Max resident set 524288000 524288000 bytes Max processes 100 100 processes Max open files 1024 1024 files Max locked memory 65536 65536 bytes Max address space unlimited unlimited bytes Max file locks unlimited unlimited locks Max pending signals 14001 14001 signals Max msgqueue size 819200 819200 bytes Max nice priority 0 0 Max realtime priority 0 0 Max realtime timeout unlimited unlimited us

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