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• guide for max memory bandwidth AMD Opteron 61xx series

  - by maruti

  the new opteron have 4 mem channels per CPU. Found on internet that Intel Nehalem: 1 DIMM in each mem channel - 1333 Mhz more than 1 - 1066Mhz is there a similar recommendation or guide for AMD Opteron 6100 series?

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• Automatically delete old files from a specified folder?

  - by davr

  I want to set up an automatic task that will automatically delete files older than X days from a specific folder. I'd prefer to do it without having to install any 3rd party software, but I'll be ok if it's a very small and simple utility. I want this to force me to keep my files organized. I am setting my browser to download to a standard folder, and then with this script to automatically delete files older than a week, I will be forced to move & organize downloaded files I want to keep.

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• My hosting server giving memory allocation error

  - by Usman

  I have hosted my website on shared hosting linux server. As there are atmost 10-15 visitors come to my website daily but My wordpress website most of the times gives 500 Internal Server Error. I accessed my server Error Log following error is showing: [Tue Dec 04 08:57:45 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:45 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:43 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:43 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:42 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:42 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:41 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:41 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:40 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:40 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:32 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:31 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:29 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:29 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:26 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php Is my hosting service really bad. And any solution. Thanks in advance.

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• how to recover images from memory card

  - by user23950

  I don't know what happened. I tried to connect the digital camera on the computer using usb but then it freeze(the camera), so I tried to turn it off, but it wont turn off so I just removed the battery. But when I plug it in again , the images are loss. I tried recovering the data using tune up undelete and trying to search for *.jpg, but there were no results, what can I do to recover the pictures?

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• Motherboard max memory supported

  - by Ashfame

  I have an Intel DG965RY motherboard and its specification says it supports 8GB with 533 or 667Mhz RAM sticks and only 4GB with 800Mhz RAM sticks. I am running a 64bit OS. I earlier had 2 X 1GB sticks (800Mhz), so I bought 2 X 2GB sticks (800Mhz) and I underclocked them in the settings to run at 667Mhz. Shouldn't it support all 6GB RAM now? It would be a bummer if I will specifically need 667Mhz sticks thinking that at the worst they will underclock and then run at 667Mhz. I tried this because I saw someone posted at some forum that he put in 4GB+ of RAM in the same board @ 800Mhz and the system uses it all. In my case (On Ubuntu), it only shows 3.2GB as of now (link to Question) so needed to confirm if this is a hardware limitation.

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• Disable Offline Files (mobsync.exe) on Windows 7 Home

  - by Synetech

  This morning I was watching the CPU graph of a Windows 7 Home laptop and noticed that every few seconds, the CPU would spike several percent. I watched the processes and determined that it was mobsync.exe (Offline Files) that was the culprit. I tried the usual steps that Googling turns up, and clicking the Manage Offline Files link to bring up the Offline Files dialog to click Disable Synch does not work because the dialog will not display. This makes sense since everything I have read indicates that Offline Files is not even included/supported in the Home version, so I am at a loss as to why it is running at all, let alone why it is sucking up CPU cycles. (My best guess is that it was started when they pressed Win+X to access the Mobility Center.) Of course I can just kill mobsync, but it could always just come back. How/why would mobsync be running on a Home version and how can it be disabled (of course the Group Policy editor is not available on a Home version).

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• OAS log files filling up hard drive

  - by Andrew Hampton

  We've had issues with log files for Oracle Application Server filling up the hard drive on our server. The files are in the /network/admin folder and are named server.log_XXXXX.trc and client.log_XXXXX.trc where XXXXX are 5 digits. The files are typically anywhere from 1-2MB in size but can be up to 100MB and thousands of them are created at a rate of about 5-10 per minute. Does anyone know how to disable these logs? Thanks!

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• Batch renaming 32000 files - splitting into multiple subdirectories

  - by Gareth

  I've got a web server which has files uploaded to it. There is a script which assigns them numeric IDs and stores them in a corresponding subdirectory. I've now got 32000 of these uploads and that's too many for the server to handle in one directory. The script I'm using does have a way to "namespace" uploads so that ID 12345 - instead of sitting in /files/12345 - would sit in /files/namespaced/000/012/345. The code can deal with this just fine, but I now have 32000 subdirectories in the wrong naming style. What's the easiest way to go through my existing files and put them in the right place?

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• Windows Server 2008 R2 Finding Hidden files that are causing drive to fill up

  - by Xaxum

  What is the best way to find out what files are sucking up so much space? My Windows directory lists its size as 15 GB but when I run a powershell script against it, it shows 40 GB. It seems 40 GB is about right because if I use that 40 GB and add it to the rest of my folders on C I get the 45 GB that is in use. I checked volume shadow copy and that is disabled and there are no volume shadow files listed. My page file is limited to 3 GB. How can I find out what files are taking 25 GB of space? Final Results: We ended up disabling UAC and then the Properties showed the true file size of the Windows folder, as shown in powershell script. This allowed us to drill down to the folder that had the issues... In our case it was in C:\Windows\System32\config\systemprofile\AppData\Local\VMware\VDM there were several large dump files, these were the mysterious unknown files in WinDirStat. It turns out our nessus scan is crashing a view service for a couple seconds so it creates a large dump file. So we will try this.. https://discussions.nessus.org/thread/5212

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• Odd Suhosin memory alerts

  - by slice

  I am getting a lot of odd suhosin alerts in my syslog. The following are example entries: Jun 9 08:46:11 suhosin[9764]: ALERT - script tried to increase memory_limit to 2145386496 bytes which is above the allowed value (attacker '157.55.39.180', file '/var/www/site/index.php') Jun 9 08:46:11 suhosin[9744]: ALERT - script tried to increase memory_limit to 2145386496 bytes which is above the allowed value (attacker '109.74.2.136', file '/var/www/site/test.php') Jun 9 08:46:13 suhosin[9779]: ALERT - script tried to increase memory_limit to 0 bytes which is above the allowed value (attacker 'REMOTE_ADDR not set', file 'unknown') Jun 9 08:46:13 suhosin[9779]: ALERT - script tried to increase memory_limit to 2145386496 bytes which is above the allowed value (attacker 'REMOTE_ADDR not set', file 'unknown') What is happening here? Why 0 bytes or 2145386496 bytes (2046 GB!!??)? Why does it sometimes state the attacker and the requested script and sometimes state 'REMOTE_ADDR not set' and file 'unknown'? How do I proceed to figure this out?

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• Firefox/Flash memory monsters

  - by ULTRA_POROV

  1.5 gb. have 10 open flash sites (small sites). The sites are 2 - 4mb great :D :D :D congrats mozilla/adobe!

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• View rotated log files Mac OS X Server (*.?.gz)

  - by Meltemi

  Trying to look at some of our older log files and find they're cryptic "Unix Executable Files". This particular server I'm working with is an older Mac OS X Server (10.4 - Tiger). -rw-r----- 1 root admin 36 1 Jun 15:48 wtmp -rw-r--r-- 1 root admin 578 27 May 17:40 wtmp.0.gz -rw-r----- 1 root admin 89 26 Apr 13:57 wtmp.1.gz -rw-r----- 1 root admin 78 29 Mar 16:43 wtmp.2.gz -rw-r----- 1 root admin 69 15 Feb 17:21 wtmp.3.gz -rw-r----- 1 root admin 137 16 Jan 13:09 wtmp.4.gz i'm using zless to try and view the contents of the .gz files. and what i see is unreadable: ... <DF>^R<AF>ttyp1^@^@^@joe54^@^@^@^@^@108.184.63.22^@^@^@^@K<DF>"<B8>ttyp1^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@K<DF>%<A1>console^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@K<E0>1 ~^@^@^@^@^@^@^@shutdown^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@K<E0>1^L~^@^@^@^@^@^@^@reboot^@^@^@^@^@^@ ... same goes for system.log.0.gz, etc... anything that's been rolled in compressed .gz files. What am i missing?

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• Copy photos from memory card (How do I manually start the wizard?)

  - by Motti

  I want to copy photos from my camera's memory card using Windows photo copy wizard, however I'm not connecting the camera directly (I lost the cable) rather I'm inserting the camera's SD memory card into the memory card's slot. Windows (Vista) recognizes the memory card and I can explore the photos but it doesn't automatically launch the "Device connected, what do you want to do" wizard. How do I manually launch the photo copy wizard?

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• iTunes memory usage

  - by Jordan S. Jones

  Why does iTunes use upwards of 70 megs of ram when it is minimized to my system tray playing music? -- Update -- I understand that iTunes is a resource hog :) What I'm trying to find out, is what part of iTunes is using all that ram. Is it the music library? If I have a smaller music library, will it use less ram? Is it loading all the Album Artwork into ram for some dumb reason? Additionally, is there any recommendations on what someone could do to reduce the amount of ram it is using?

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• Why is my server using so much memory?

  - by Qasim

  I haven't even set up my website on my dedicated server so I'm the only one using it at the moment. And yet this is what I see in my sys info: Full Size I just got a bunch of security softwares installed today so I'm wondering if that could be the reason. Programs like Dos deflate, CSF firewall, Mod_security, SIM, Log watch, etc. My server's details: CentOS Processor Intel Xeon CPU X3220 CPU Speed 2.39 GHz Cache Size 4.00 MB RAM 2GB DDR2

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• advice on memory purchase for AMD 6134 2P server

  - by maruti

  HP DL165G7 with 2x AMD 6134 target RAM: 48GB options: 2GB dual rank registered DIMM - 24 Qty HP-2GB 2Rx8 PC3-10600R-9 Kit 4Gb single rank registered DIMM - 12 Qty HP-4GB 1Rx4 PC3-10600R-9 Kit which of the above is recommended for performance (ESX server)? AMD CPUs suffer any downgrade on mem bandwidth like Xeons?

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• Cygwin creates files with special (shared) icons on windows

  - by barjonah

  I use cygwin to transfer files between linux and windows machines. Everytime I transfer a file to a windows machine it adds an extra shared user icon on the file's or folder's icon itself. This also happens if I create a file from cygwin on windows using pretty much any command: echo, vim, nano, cat. This is what the cygwin-created folders (and files) look like. This is what a normal folder (or file) looks like. I'm thinking it has to do with permission, because I'd have to chmod it everytime if I want other applications to access the files or folders on windows. How can I tell cygwin to create regular ol' files just like a user or any program would?

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• Prevent 'Run-time error '7' out of memory' error in Excel when using macro

  - by MasterJedi

  I keep getting this error whenever I run a macro in my excel file. Is there any way I can prevent this? My code is below. Debugging highlights the following line as the issue: ActiveSheet.Shapes.SelectAll My macro: Private Sub Save() Dim sh As Worksheet ActiveWorkbook.Sheets("Report").Copy 'Create new workbook with Sheets("Report"(2)) as only sheet. Set sh = ActiveWorkbook.Sheets(1) 'Set the new sheet to a variable. New workbook is now active workbook. sh.Name = sh.Range("B9") & "_" & Format(Date, "mmyyyy") 'Rename the new sheet to B9 value + date. With sh.UsedRange.Cells .Value = .Value 'eliminate all formulas .Validation.Delete 'remove all validation .FormatConditions.Delete 'remove all conditional formatting ActiveSheet.Buttons.Delete ActiveSheet.Shapes.SelectAll Selection.Delete lrow = Range("I" & Rows.Count).End(xlUp).Row 'select rows from bottom up to last containing data in column I Rows(lrow + 1 & ":" & Rows.Count).Delete 'delete rows with no data in column I Application.ScreenUpdating = False .Range("A410:XFD1048576").Delete Shift:=xlUp 'delete all cells outwith report range Application.ScreenUpdating = True Dim counter Dim nameCount nameCount = ActiveWorkbook.Names.Count counter = nameCount Do While counter > 0 ActiveWorkbook.Names(counter).Delete counter = counter - 1 Loop 'remove named ranges from workbook End With ActiveWorkbook.SaveAs "\\Marko\Report\" & sh.Name & ".xlsx" 'Save new workbook using same name as new sheet. ActiveWorkbook.Close False 'Close the new workbook. MsgBox ("Export complete. Choose the next ADP in cell B9 and click 'Calculate'.") 'Display message box to inform user that report has been saved. End Sub Not sure how to make this more efficient or to prevent this error.

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• best tool for searching within unstructured log files [closed]

  - by Alex Holding

  i am supporting a number of bespoke applications at the minute and searching through their very non standard logs is a nightmare, so im looking for a tool which can do the following - load large text files search through multiple files at once and display all results can search with regex can be used to view and search unstructured text files There are some great looking log tools available but they all seem to be focused on structured logs, where the logs i deal with most days are just flat text files. I am currently using notepad++ but that has its own annoyances so im hoping there is a dedicated log analysis tool that i havent found yet.

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• Webserver - Memory-bound or CPU-bound? [closed]

  - by JJP

  Possible Duplicate: How do you do Load Testing and Capacity Planning for Web Sites I'm installing a social network using Zend Framework & MySql, with lots of plugins & queries. I want Webserver & Sql server on one box. I'm trying to choose between two machines (on hetzner.de): A) intel i7-2600 3.4 GHz 16 GB DDR3 RAM B) intel i7-920 2.6 GHz 24 GB DDR3 RAM B has 50% more RAM but 30% slower clock speed. Q is: is it obvious where the bottleneck will be? Would I ever need 24GB of RAM, even with lots of concurrent users?

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• Memory Speeds: 1x4GB or 2x2GB? [closed]

  - by Dasutin

  When it comes to speeds what is faster having one 4GB module in your system or having two 2GB modules. I'm not taking in the fact that the system could have dual channel capabilities. Also what about a server environment? Would it be better to have one large, high density module or break it up into several modules for speed and price? I heard an engineer at my office having a discussion with an employee. He said that its better in all situations to have one large capacity modules instead of breaking it up. It would be cheaper and perform faster. He also said it would take longer for the computer to access what it needed if there were more modules instead of having just one. His explanation didn't seem right to me and I thought I would post this question here to see what other people thought.

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• Simple jquery ajax call leaks memory in ie.

  - by Thomas Lane

  I created a web page that makes an ajax call every second. In Internet Explorer 7, it leaks memory badly (20MB in about 15 minutes). The program is very simple. It just runs a javascript function that makes an ajax call. The server returns an empty string, and the javascript does nothing with it. I use setTimout to run the function every second, and I'm using Drip to watch the thing. Here is the source: <html> <head> <script type="text/javascript" src="http://www.google.com/jsapi"></script> <script type="text/javascript"> google.load('jquery', '1.4.2'); google.load('jqueryui', '1.7.2'); </script> <script type="text/javascript"> setTimeout('testJunk()',1000); function testJunk() { $.ajax({ url: 'http://xxxxxxxxxxxxxx/test', // The url returns an empty string dataType: 'html', success: function(data){} }); setTimeout('testJunk()',1000) } </script> </head> <body> Why is memory usage going up? </body> </html> Anyone have an idea how to plug this leak? I have a real application that updates a large table this way, but left unattended will eat up Gigabytes of memory. Okay, so after some good suggestions, I modified the code to: <html> <head> <script type="text/javascript" src="http://www.google.com/jsapi"></script> <script type="text/javascript"> google.load('jquery', '1.4.2'); google.load('jqueryui', '1.7.2'); </script> <script type="text/javascript"> setTimeout(testJunk,1000); function testJunk() { $.ajax({ url: 'http://xxxxxxxxxxxxxx/test', // The url returns an empty string dataType: 'html', success: function(data){setTimeout(testJunk,1000)} }); } </script> </head> <body> Why is memory usage going up? </body> </html> It didn't seem to make any difference though. I'm not doing anything with the DOM, and if I comment out the ajax call, the memory leak stops. So it looks like the leak is entirely in the ajax call. Does jquery ajax inherently create some sort of circular reference, and if so, how can I free it? By the way, it doesn't leak in Firefox. Someone suggested running the test in another VM and see if the results are the same. Rather than setting up another VM, I found a laptop that was running XP Home with IE8. It exhibits the same problem. I tried some older versions of jquery and got better results, but the problem didn't go away entirely until I abandoned ajax in jquery and went with more traditional (and ugly) ajax.

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• Is there a different between boost iostream mapped file and boost interprocess mapped file?

  - by Yijinsei

  hey guys, want to create a mapped binary file into memory, however I not sure how to create the file to mapped into the system. I read documentation several times and realize there is 2 mapped file, one in iostream and the other in interprocess. Do you guys have any idea on how to create a mapped file into shared memory. I trying to allow multi thread program to read an array of large double written in a binary file format. Also what is the different between the mapped file in iostream and interprocess?

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• Is there a difference between boost iostream mapped file and boost interprocess mapped file?

  - by Yijinsei

  I want to create a mapped binary file into memory; however I am not sure how to create the file to be mapped into the system. I read the documentation several times and realize there are 2 mapped file implementations, one in iostream and the other in interprocess. Do you guys have any idea on how to create a mapped file into shared memory? I am trying to allow a multi-threaded program to read an array of large double written in a binary file format. Also what is the difference between the mapped file in iostream and interprocess?

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• Python: Memory usage and optimization when modifying lists

  - by xApple

  The problem My concern is the following: I am storing a relativity large dataset in a classical python list and in order to process the data I must iterate over the list several times, perform some operations on the elements, and often pop an item out of the list. It seems that deleting one item out of a Python list costs O(N) since Python has to copy all the items above the element at hand down one place. Furthermore, since the number of items to delete is approximately proportional to the number of elements in the list this results in an O(N^2) algorithm. I am hoping to find a solution that is cost effective (time and memory-wise). I have studied what I could find on the internet and have summarized my different options below. Which one is the best candidate ? Keeping a local index: while processingdata: index = 0 while index < len(somelist): item = somelist[index] dosomestuff(item) if somecondition(item): del somelist[index] else: index += 1 This is the original solution I came up with. Not only is this not very elegant, but I am hoping there is better way to do it that remains time and memory efficient. Walking the list backwards: while processingdata: for i in xrange(len(somelist) - 1, -1, -1): dosomestuff(item) if somecondition(somelist, i): somelist.pop(i) This avoids incrementing an index variable but ultimately has the same cost as the original version. It also breaks the logic of dosomestuff(item) that wishes to process them in the same order as they appear in the original list. Making a new list: while processingdata: for i, item in enumerate(somelist): dosomestuff(item) newlist = [] for item in somelist: if somecondition(item): newlist.append(item) somelist = newlist gc.collect() This is a very naive strategy for eliminating elements from a list and requires lots of memory since an almost full copy of the list must be made. Using list comprehensions: while processingdata: for i, item in enumerate(somelist): dosomestuff(item) somelist[:] = [x for x in somelist if somecondition(x)] This is very elegant but under-the-cover it walks the whole list one more time and must copy most of the elements in it. My intuition is that this operation probably costs more than the original del statement at least memory wise. Keep in mind that somelist can be huge and that any solution that will iterate through it only once per run will probably always win. Using the filter function: while processingdata: for i, item in enumerate(somelist): dosomestuff(item) somelist = filter(lambda x: not subtle_condition(x), somelist) This also creates a new list occupying lots of RAM. Using the itertools' filter function: from itertools import ifilterfalse while processingdata: for item in itertools.ifilterfalse(somecondtion, somelist): dosomestuff(item) This version of the filter call does not create a new list but will not call dosomestuff on every item breaking the logic of the algorithm. I am including this example only for the purpose of creating an exhaustive list. Moving items up the list while walking while processingdata: index = 0 for item in somelist: dosomestuff(item) if not somecondition(item): somelist[index] = item index += 1 del somelist[index:] This is a subtle method that seems cost effective. I think it will move each item (or the pointer to each item ?) exactly once resulting in an O(N) algorithm. Finally, I hope Python will be intelligent enough to resize the list at the end without allocating memory for a new copy of the list. Not sure though. Abandoning Python lists: class Doubly_Linked_List: def __init__(self): self.first = None self.last = None self.n = 0 def __len__(self): return self.n def __iter__(self): return DLLIter(self) def iterator(self): return self.__iter__() def append(self, x): x = DLLElement(x) x.next = None if self.last is None: x.prev = None self.last = x self.first = x self.n = 1 else: x.prev = self.last x.prev.next = x self.last = x self.n += 1 class DLLElement: def __init__(self, x): self.next = None self.data = x self.prev = None class DLLIter: etc... This type of object resembles a python list in a limited way. However, deletion of an element is guaranteed O(1). I would not like to go here since this would require massive amounts of code refactoring almost everywhere.

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