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  • I want to replace a number with successive numbers, starting at 1 and going up.

    - by Pär-Magnus Green
    I'm aware that this is something people can easily program, but I'm not familiar with those things, so I was hoping there was an easier solution. I've edited a large database of questions, including sorting, and ended up getting all the question ID's mixed up. I'm trying to do this in Notepad++, but any other suggestions are welcome. I'm wondering if there's a way to search for a string (ex. "Question[any number]") and replace the numbers with first 1, then 2, et.c. For clarification, this is how one question looks like: TriviaBot_Questions[3]['Question'][63] = "Acronyms: What does WTT stand for?"; TriviaBot_Questions[3]['Answers'][63] = {"Want To Trade"}; TriviaBot_Questions[3]['Category'][63] = 7; TriviaBot_Questions[3]['Points'][63] = 1; TriviaBot_Questions[3]['Hints'][63] = {}; and the next question, as is now, is not followed by 64. It might be 245 or 1029, and regardless of which number it is, I want it replaced with "previous number + 1", basically.

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  • Calculating memory footprints using /proc/sysvipc/shm

    - by MarkTeehan
    This is for a SLES 10 database server. One of my servers runs three databases and three app servers; I am analyzing how their shared memory segments grow and shrink to avoid intermittent out-of-memory scenarios. "Top" is hot helpful for this since its calculations for RES and VIRT are inconsistent. I am doing this by matching up the contents of /proc/sysvipc/shm with memory usage reported by the database admin console. I do this by totaling up saving the contents of /proc/sysvipc/shm and then total up "bytes" for all of the segments for the offending userid. This is a large server with hundreds of segments and tens (or hundreds) of GB of allocated memory per userid. However it doesn't match up - the database management software claims to be using around 25% more memory than the total I calculate. Negligible swap space is in use, so I am ignoring that. I am running it as root so I am sure I see all shared memory segments. My question is : is all (significant) allocated memory recorded in /proc/sysvipc/shm, or is this only shared memory (*and not "un-shared" memory?). If this is incorrect, what is the correct way to calculate out the total allocated memory for each userid? Also: I believe doing a 'cat' on this file locks server IPC. I check it every 5 seconds - is it likely that this frequency could be problematic? Thanks! Mark Teehan Singapore

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  • De-duplicating backup tool on a block basis? [closed]

    - by SST
    I am looking for an (ideally free as in speech or beer) backup tool for Unix-like OS which can store deduplicated backups, i.e. only nonredundant content takes up additional space. I already looked at dirvish (my first candidate) and rsnapshot which use hardlinks to achieve deduplication on a per-file level. However, as I want to back up large files (Thunderbird mailboxes 3GB, VMware images 10GB), such file are stored again entirely even if just a few bytes change. Then there are rsync-based tools like rdiff-backup which only store deltas and a current mirror. However, as the deltas are generated against each previous mirror, it is difficult to fine-tune the retention granularity (only keep one backup after a week, etc.) because the deltas would have to be re-evaluated. Another approach is to partition content into blocks and store each block only if it is not stored yet, otherwise just linking it to the first occurrence. The only tool I know of that does this by now is obnam (http://liw.fi/obnam), and it even supports zlib-compression and gpg-encryption -- nice! But it is very slow, AFAICT. Does any one know any other, solid backup software which supports deduplication on a sub-file level, ideally with at least some management options (show/select/delete generations...)?

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  • tomcat vs FULL J2EE Solutions

    - by jrhickey
    We are getting ready to make a major revision in our Web Application architecture which currently is running on JBoss 4.2. At first we were looking at moving from 4.2 to JBoss 6 but after some research tomcat may be a better solution for us. My first question is their anything that JBoss can do that tomcat cannot do assuming you are using the correct plugins. We do not really use EJB's in our solution and it would appear there are simple plugins for web services, JMX and other features. Tomcat appears to have much better support, faster upgrade cycles and many, many books. Since there is less to the system it also seems much easier to support from an admin point of view. What am I missing? The main features we want to enable are better clustering support and session replication / persistence. We will consider other application servers as well such as Glassfish / Geronimo. quote form a web article: Apache Tomcat is the world’s most widely used web application server, with over one million downloads per month and over 70% penetration in the enterprise datacenter. Tomcat is used to power everything from simple one server sites to large enterprise networks.

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  • Migrating ODBC information through a batch file

    - by DeskSide
    I am a desktop support technician currently working on a large scale migration project across multiple sites. I am looking at a way to transfer ODBC entries from Windows XP to Windows 7. If anyone knows of a program or anything prebuilt that already does this, please redirect me. I've already looked but haven't found anything, so I'm trying to build my own. I know enough basic programming to read the work of others and monkey around with something that already exists, but not much else. I have come across a custom batch file written at one site that (among other things) exports ODBC information from the old computer and stores it on a server (labelled as y: through net use at the beginning of the file), then later transfers it from the server to a new computer. The pre-existing code is for Windows XP to XP migrations. Here are the pertinate bits of code: echo Exporting ODBC Information start /wait regedit.exe /e "y:\%username%\odbc.reg" HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBC.INI (and later on) echo Importing ODBC start /wait regedit /s "y:\%username%\odbc.reg" We are now migrating from Windows XP to 7, and this part of the batch file still seems to work for this particular site, where Oracle 8i and 10g are used. I'm looking to use my cut down version of this code at multiple sites, and I'm wondering if the same lines of code will still work for anything other than Oracle. Also, my research on this issue has shown that there are different locations in 64 bit operating systems for 32/64 bit entries, and I'm wondering what effect that would have on the code. Could I copy the same data to both parts of the registry, in hopes of catching everything? Any assistance would be appreciated. Thank you for your time.

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  • Is there a way to log commands that a user runs in Windows 7?

    - by camster342
    I manage a large enterprise environment, and while we try to advise users not to, there are inevitably users that need to have local admin access to their machines. The problem is that some of these users like to "fiddle" and sometimes screw up their machines in "wonderful" ways. Is there an easy way to log what a user does on a machine, specifically in the command prompt? Maybe there is 3rd party tools I could use to log this information? With Linux that I used to use in past ages, you could look at a users bash history file to see what commands they have run. While I realise that specific log could also be altered by the user if they wanted to cover their tracks, that is the sort of log I'm looking for. If there are other ways I can also log what other system configuration type changes they make as well (not necessarily command line based), that's also useful. I know about event/system logs and so on, but that doesn't necessarily catch all the information I need to figure out how the user has buggered their machine this time.

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  • How do I make a PPT file as small as possible?

    - by grunwald2.0
    Currently I am agonizing over several large presentation files, which I happened to reprint to PDFs... One thing I wondered: Do PPT's (from Microsoft Powerpoint) always to have to be that big? And what would be the strategies to make a PPT smaller? (If we say "ceterus paribus" at e.g. 25 slides and assuming that one isn't allowed to use a cloud-based service like GDocs, rocketslide or Prezio.) Of course there are the obvious "bad guys": Images and graphics. But: How about roll-over animations etc, who knows how much space they take? How about "smart arts"? Could one save file size if one would use "Open Office" or "Libre Office" Impress? (I didn't try it yet.) And "what if": What if we need to include e.g. five images (or charts that can't be remade in Excel in time), how would we best reduce the file size impact of those five images, if we needed to? I ask all this from an honest "business" perspective. I am no nerd or "Microsoft MVP" and I don't intend on delving into LATeX or similar yet. But that doesn't mean that I am not curious and very willing to learn. I am basically interested in (proven) best practices. Yes I know this question is lacking "initial research", but I think the perspective of my question is interesting and unique to a lot of people and if we intend to make SE a "Q&A" / Wiki kind-of reference site, this question might be a good way to "collect" advice on a question that has a very defined goal: Minimum file-size.

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  • Embedded Windows XP

    - by Kyle
    My company acquired a brake press for bending large structural steel plates. We received it second hand and it came with an embedded copy of windows XP. Now for the part that's driving me nuts: plug and play has been turned off, also accessibility options has been disabled. What does this mean for me? Keyboards will not work! Nothing that plugs into a USB port will work and it does not have a CD ROM drive. I have tried to turn on plug and play using the on screen keyboard but it is not there since accessibility options is turned off. I would just get an updated copy of the the embedded OS but they come from Sweden and are extremely expensive. I assume there has got to be a way to get a USB devices to work. We need to get a wifi adapter on it so I can use team viewer and remotely configure it for our needs. Things to keep in mind: There is no keyboard so everything has to be done with the mouse There is no PS2 port for a keyboard just a mouse. Odd. I am 5 states away from this location and have been working with a tech who is physically installing the machine. System 32 seems to be missing A LOT of files, the tech told me there is only 8 folders in there and no other files (I don't even understand how Windows is running like this). If anyone has ANY ideas I would appreciate it, I am unsure where to go from here.

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  • How do I use command line and wmctrl to make a window larger than the screen to get a huge screenshot?

    - by Mnebuerquo
    I use a program which makes a large image which I have to scroll to view. The program has no way to save the image, and I have no access to the source to modify it. The only way I have to get the image from the program is by screenshot. My goal is to save the full size image without having to piece together individual screenshots. I'm using this script to try taking a screenshot: #!/bin/bash window=$(wmctrl -l | grep "Program$" | awk '{print $1}') wmctrl -v -i -r $window -e '0,0,0,6030,5828' wmctrl -i -a $window import -window $window ~/Desktop/screenshot.png This uses wmctrl to get the window id ($window) for a window named "Program". It then tries to resize the window to the desired dimensions. It uses imagemagick (import) to save a screenshot.png on the user's Desktop. All of this works except the resize step. I can resize the window using wmctrl -r -e, but sizes greater than the screen size don't work. I'm using Ubuntu 10.04 and the Gnome Desktop. I run two monitors, but I've tried this with one of them disabled. Is there a way to resize the window larger than my screen to get a huge screenshot?

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  • PXELinux and compressed kernels/images

    - by Yvan JANSSENS
    Is it possible to boot compressed kernels with a compressed initrd with PXELinux? First, a little background: We created a custom Linux distro, for diskless OpenCL computing nodes. We want those nodes to fetch their OS from the network. Our Distro is composed out of a kernel (duh) and a large initrd which is loaded into RAM and everything is executed from there. We chose to run everything off the initrd for two reasons: NFS was not an option to serve the filesystem's extra contents Fast file access from RAM. No persistent storage needed, data and config is pulled dynamically through a SOAP service. Now our initrd is about 450M in size. At our network speeds, it takes about two to three minutes to load a single client. Will compression speed up te downloading, and if yes, which one should be used? Is LZMA supported by PXELinux, or do we need to stick to bzip2 or gzip? Because of the 2-3 minutes loading time, booting 15 nodes over the same network link takes quite a lot of time. We decided not to use hard drives or CD/DVD drives, for financial reasons (cheapest HDD @ €30 times 15 is a lot of money saved ;-) ) So, our question is: what compression options are available for this setup? And how do we do this? Thank you for your time! Yvan Janssens

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  • Free blog sites where the blogs can (if the template does) validate as XHTML Strict 1.0?

    - by Deleted
    I'm looking for a site where I may register a free blog and have the blog validate as XHTML Strict 1.0. On the surface this may seem like a trivial problem only related to the theme/template in use, but that's unfortunately not the case. One example of a provider which can't fullfill this requirement is Blogger. Altough the pages of the blogs there presents themselfs as XHTML 1.0 Strict it is impossible to actually comply with the requirements inheritied by that markup type in the blog (as the XHTML which is generated by Blogger makes the page as a whole invalid). I've sent a mail to Tumblr to see if it was possible with them, but so far my reply consists of them having forwarded my mail with a "suggestion" to the development department. I don't know if we had a communication error or if I'm actually going to receive a proper answer later. Time will tell. I haven't had time to investigate Tumblr myself, so they may very well be the solution to this problem. To sum things up, I'm looking for any provider: Of a free blog. The blog must have the capability to validate as XHTML Strict 1.0. With capability I mean that the system shouldn't get in the way of creating/using a theme which complies as XHTML Strict 1.0. Preferably is large or at least likely to stay around for a couple of years to come. But I'm willing to take my chances if none of the established providers are up to the task. Thank you for reading! I hope you know of any provider which would be suitable, preferably with proof by linking to a blog there which validates. I'm not looking for suggestions to look into, as there are far to many to investigate and far too little time. If you know of something for sure, I'd be very happy to know about it.

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  • Create taskbar shortcut to website in Window 7

    - by BJ292
    I'd like to create a shortcut to a website in Windows 7 on the taskbar that is not pinned to the default web browser. Currently if I drag the favicon from the left end of the firefox address bar to the Win 7 taskbar it will pin a shortcut to the firefox browser icon. Similarly if I create a shortcut on the desktop to a website and drag it to the taskbar it will also end up pinned to the firefox icon. The problem with this is to get to that shortcut I have to right click on the firefox icon and then select the pinned shortcut. That is workable for me but I want to do this for a child - so the shortcut needs to be right there on the taskbar as a stand-alone item. There is a workaround that pretty much solves the problem - create a new folder somewhere safe - create the shortcut to the website in the new folder - right click the taskbar and select toolbars - new toolbar - then browse to the folder you created and select it as the new toolbar. The contents of the folder will now appear on the taskbar as shortcuts. You need to drag it from the right hand end of the taskbar into the middle - turn off show titles and show text and make the icon large. I'd call this a 75% solution. Anyone know how to make a web shortcut that looks and operates just like any of the other shortcuts on the taskbar?

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  • Print over remote CUPS server, but just show a subset of the printers.

    - by jdm
    I'd like to print from my Ubuntu laptop (karmic) to some networked printers. Our organisation uses a CUPS server with several hundred printers. What I know I can do is: CUPS_SERVER=printers.company.com acroread document.pdf and then Adobe Reader shows me all available printers to select from. However, it takes a couple of minutes to display the large list, which is really annoying. (The desktop PCs here suffer from this, too.) The other option is to add a new printer with an address like ipp://printers.company.com/printer/bldg1_hp8150 (to the Ubuntu printer configuration = local CUPS server). However, it asks me for a driver. I don't want to / can't always specify a driver, since some printers don't appear in the list. I'd like to let the remote CUPS server handle the driver part (like it does when i set CUPS_SERVER), and do no more preprocessing/"driver stuff" on my side. The ideal thing would be if I could somehow add the remote printer list to my local cups server, and apply a filter, so that it would just display printers a la bldg1_*. This feature was available in KDE3.?, but I can't find something similar in Ubuntu/Gnome. Any suggestions?

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  • Curious enigma of a network cable / connection / quality

    - by Foo Bar
    So, the situation is like this: I'm renting an apartment in a large house and I'm sharing internet with the landlord who lives downstairs. The internet is (in my best guess) optical 20/20Mbit. I don't know how it's all wired in his flat (haven't been there / seen it). Anyway, in my flat comes a cable which seems to be connected directly to the optic to ethernet router (and the password is the default one, so I have access, he he). There was a switch connected to that and to wires that go around the flat, and the wiring is terrible. It's even mixing phone and ethernet, and from what I see some cables are even interconnected!? Anyways, this cable that comes to my flat is very short. I can barely connect my computer on it, but if I do, I seem to get decent speed / performance. Not great, but decent. If, however, I connect switch to it (tried 2 different switches and a wifi switch) it's all blinking but I can't even connect to 192.168.1.1 (the router). DHCP fails, ping is losing 80-100% of replies. So I connected this cable directly to the other cable which goes to my work room, with a connector that has two female jacks and no electronics. Now when I connect my computer in my room, again, the performance is decent. When I connect WRT54GL (with tomato, DHCP disabled) to it and I plug a cable in this WRT and to my computer... the performance is gone. Download seems okay on Speedtest, but upload is .2Mbps and it's connecting forever. So what kind cable troll am I having here? Any ideas?

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  • What are the replacement options for an IDE hd for a DOS based system?

    - by dummzeuch
    I have got a few "embedded" systems running MSDOS 6.2 which boot from and store data to IDE hard disks. Since these drives are nearing their end of life, the question arises how we can replace them. The requirements are: DOS must be able to install and boot from these drives. They must be able to sustain heavy (mostly) write access. If possible, they should be able to survive moderate vibrations (not too bad since the current hds have survived several years of that) I considered the following options so far: other ide hard drives: Unfortunately modern IDE drives are too large so DOS cannot boot from them even if I create small partitions. Older IDE drives are just that: old, so they are probably not the most reliable ones any more. SSDs: There are a few SSDs with IDE interface available. I have not yet tried them. Does anybody have any experience with them? They look like the ideal replacement provided that DOS can boot from them and that writing speed does not deteriorate too much (the old hds are no race cars either). Compact Flash: There are adapters for using CF with IDE controllers and they work fine. DOS can boot from them and they have no problems at all with vibrations. What I am not sure about is their durability. DOS uses FAT so some very few sectors are written every time the medium is being written to. IDE to SATA converters: I have no idea whether they are any good. Has anybody tried them? It might be an option to use one of these to connect an SATA SSD to the system. Are there any alternatives that I have missed? (We are working on replacing these systems, but it will still take a few years.)

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  • Uploading to another domain gives HTTP code 405

    - by dragon112
    I'm trying to upload a file (which can be quite large) from the website of one server to the backend of another server using plupload. Lets say: domain 1 = http://www.websitedomain.com/uploadform domain 2 = http://www.backenddomain.com/uploadhandler Trying to upload i send the following: OPTIONS /main/uploadnetwork.php HTTP/1.1 Host: backenddomain.com Connection: keep-alive Access-Control-Request-Method: POST Origin: http://www.websitedomain.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.79 Safari/537.4 Access-Control-Request-Headers: origin, content-type Accept: */* Referer: http://www.websitedomain.com/uploadform Accept-Encoding: gzip,deflate,sdch Accept-Language: nl-NL,nl;q=0.8,en-US;q=0.6,en;q=0.4 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 DNT: 1 But when I try to start the upload the server returns the following: HTTP/1.1 405 Method Not Allowed Allow: GET, HEAD, OPTIONS, TRACE Content-Type: text/html Server: Microsoft-IIS/7.5 X-Powered-By: ASP.NET X-Powered-By-Plesk: PleskWin Date: Mon, 01 Oct 2012 12:41:57 GMT Content-Length: 999 After doing some research I found out that a browser does this to check if the server will accept the intended message. It looks like my server doesn't feel like accepting a simple POST call even tho i use post all the time. The Google Chrome console gives the following error: XMLHttpRequest cannot load http://www.backenddomain.com/uploadhandler. Origin http://www.websitedomain.com is not allowed by Access-Control-Allow-Origin. Does anyone know how to stop the browser from checking or how i can tell my server to just accept the POST?

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  • SQL queries break our game! (Back-end server is at capacity)

    - by TimH
    We have a Facebook game that stores all persistent data in a MySQL database that is running on a large Amazon RDS instance. One of our tables is 2GB in size. If I run any queries on that table that take more than a couple of seconds, any SQL actions performed by our game will fail with the error: HTTP/1.1 503 Service Unavailable: Back-end server is at capacity This obviously brings down our game! I've monitored CPU usage on the RDS instance during these periods, and though it does spike, it doesn't go much over 50%. Previously we were on a smaller instance size and it did hit 100%, so I'd hoped just throwing more CPU capacity at the problem would solve it. I now think it's an issue with the number of open connections. However, I've only been working with SQL for 8 months or so, so I'm no expert on MySQL configuration. Is there perhaps some configuration setting I can change to prevent these queries from overloading the server, or should I just not be running them whilst our game is up? I'm using MySQL Workbench to run the queries. Here's an example.... SELECT * FROM BlueBoxEngineDB.Transfer WHERE Amount = 1000 AND FromUserId = 4 AND Status='Complete'; As you can see, it's not overly complex. There are only 5 columns in the table. Any help would be very much appreciated - Thanks!

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  • How to get desired FireFox last tab behavior?

    - by JustJeff
    All tabs should be the same; so if any of the have a 'close' button, they all should, including the last tab. I see no reason that a tab's close button should suddenly vanish simply b/c that tab has become the last one open. If I have N tabs open, and park the mouse over the left-most tab's close button, this vanishing close button trick means now I have to make a large mouse move to get to the app's close button. Unsat. Mouse moves = too many milliseconds wasted. Closing the last tab should NOT take me to my home page, or any other page whatsoever. I want the browser to close with the last tab. I do not expect or want "new tab" behavior when I click a Close button. Now, I've gone into about:config and played with browser.tabs.closeWindoWithLastTab, but this setting oversteps its purpose; while it does make the browser close, for some inexplicable reason, it also suppresses the last tab's close button! I have tried the "last tab close button" add-on, and while this does restore the close button, the add-on oversteps by taking the liberty of turning closeWindowWithLastTab off. Is there some way out of this pickle? Is it too hard to just code things to provide simple, orthogonal actions, so that everybody can config the UI to their liking, and not just to a few pre-fab configurations that the developers think everyone should like? Btw, FF 13.0.1 on ms windows

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  • How to make Microsoft JVM work on Windows 7?

    - by rics
    I am struggling with the following problem. I cannot install MS JVM 3810 properly on Windows 7. When I start Interner Explorer 8 without starting any java 1.1 programs choosing Java custom settings under Internet options causes the crash of the browser. I have some Java 1.1 programs that work well in Internet Explorer 8 on Windows XP after the installation of MS JVM 3810. I know that it is not advised to use this old JVM but it is not a short-term option to port the programs in newer Java since it contains 3rd party components. Complete rewrite is a long-term plan. Strangely jview and appletviewer (jview /a) works from a console so the MS JVM 3810 is not completely busted just IE 8 does not like it. The problem with the appletviewer is that it cannot connect to the server even if both signed and unsigned content in Java custom settings have been set to Enable all. (Since Java custom settings was unreachable due to the crash the modifications - including My computer - were performed through the registry and pre-checked to behave correctly on Windows XP and Internet Explorer 8.) If jview was working then I could at least think of a workaround. Is there a way to configure MS JVM or jview properly on Windows 7? Another options would be: Checking Internet Explorer 9 Beta. Using virtualbox and Windows XP older IE in it. Delaying Windows 7 upgrade. ... Update Finally we have modified all the programs to work parallelly as applet and application as well. This way the programs can still be used from browser on older Windows versions. On Windows 7 the applications are started from the desktop. Installation to all user machine can easily be solved since they already have a large common application drive. The code update is fortunately only a few lines of modification: including a main method in the applet class. Furthermore instead of the starting html page a bat file is used to set the classpath before the startup with jview.

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  • 2 Computers, same network, different outgoing speeds when uploading to internet?

    - by user117339
    I have 2 work machines in my office, a PowerMac G5 and a MacBook Air. Both behind an IPCop firewall. The PowerMac is connected through a gigabit switch, the MacBook Air is connected through a Netgear 802.11g access point that is then plugged into the gigabit switch. There is also a FreeNAS box, both machines are able to read and write files to it at close to their pipe speeds. The main problem is when I am trying to upload files to the internet at large. The G5 is only hitting 0.1 - 0.25 Mbps. The Macbook is able to hit 2-3 Mbps. The setup (G5 / IPCop / Network) has been the same for 5 years. The issues with the internet speed started about 3 months ago. I hadn't tested on the Macbook at this point. I had complained to the ISP, they said their modem needed a firmware update, did that nothing changed. Reset IPCop, turned off squid, etc. No changes. The ISP switched the office over to a better plan with a theoretical 6 Mbps up, still no change. At this point I tried testing the Macbook, and lo and behold there's the speed. But why? I have tried changing out everything, cables, switches, using another ethernet port on the G5, wiping the system, using DHCP, using manual IPs, changing DNS servers, etc. Nothing works. I figured that if there was something horribly wrong with the network, then internally I would find a similar issue, but that is perfect. iperf, ping, etc show no dropped packets and near saturation of the internal network. I'm at a loss as to what the heck is going on. Any ideas would be appreciated! Below are some screenshots of speedtest.net: G5: Macbook Air:

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  • How to prevent an SSD from disappearing from BIOS

    - by Midimatt
    I've only recently upgraded my old machine to a new one with a brand new 60gb SSD as my boot drive and a 1TB main drive. Paranoid about completely breaking my SSD, I read up on a lot of issues that I needed to watch out for, including making sure AHCI was turned on and trim enabled. PC has been working fine for a few weeks now, until today. My wife was watching some TV on the machine when it started to act strange and eventually blue screened. She rebooted and the boot mgr was missing. When I got home from work I checked the BIOS and the drive had disappeared. I panicked and looked up some possible fixes, and I discovered a large amount of people having problems with the drive firmware, especially on OCZ Vertex and Agility drives, and my drive is an Agility 3 drive. The problems included blue screens followed by missing drives, and a solution was to reset the CMOS and try again. This worked, and now everything seems to be working fine. My question is, is there any way to prevent this from happening? Am I missing a setting for my SSD? All of the posts I found were from early to mid-2011 nothing for the end of 2011 to 2012. So I am wondering if I've missed anything. EDIT: Checked my drives firmware and it is 2.15, which has had issues reported by users.

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  • mysql - moving to a lower performance server, how small can I go?

    - by pedalpete
    I've been running a site for a few years now which really isn't growing in traffic, and I want to save some money on hosting, but keep it going for the loyal users of the site and api. The database has one a nearly 4 million row table, and on a 4gb dual xeon 5320 server. When I check server stats on this server with ps -aux, i get returns of mysql running at about 11% capacity, so no serious load. The main query against mysql runs in about 0.45 seconds. I popped over to linode.com to see what kind of performance I could get out of one of their tiny boxes, and their 360mb ram XEN vps returns the same query in 20 seconds. Clearly not good enough. I've looked at the mysql variables, and they are both very similar (I've included the show variables output below, if anybody is interested). Is there a good way to decide on what size server is needed based on what I'm coming from? Is it RAM that is likely making the difference with the large table size? Is there a way for me to figure out how much ram would be ideal?? Here's the output of the show variables (though I'm not sure it is important). +---------------------------------+------------------------------------------------------------+ | Variable_name | Value | +---------------------------------+------------------------------------------------------------+ | auto_increment_increment | 1 | | auto_increment_offset | 1 | | automatic_sp_privileges | ON | | back_log | 50 | | basedir | /usr/ | | bdb_cache_size | 8384512 | | bdb_home | /var/lib/mysql/ | | bdb_log_buffer_size | 262144 | | bdb_logdir | | | bdb_max_lock | 10000 | | bdb_shared_data | OFF | | bdb_tmpdir | /tmp/ | | binlog_cache_size | 32768 | | bulk_insert_buffer_size | 8388608 | | character_set_client | latin1 | | character_set_connection | latin1 | | character_set_database | latin1 | | character_set_filesystem | binary | | character_set_results | latin1 | | character_set_server | latin1 | | character_set_system | utf8 | | character_sets_dir | /usr/share/mysql/charsets/ | | collation_connection | latin1_swedish_ci | | collation_database | latin1_swedish_ci | | collation_server | latin1_swedish_ci | | completion_type | 0 | | concurrent_insert | 1 | | connect_timeout | 10 | | datadir | /var/lib/mysql/ | | date_format | %Y-%m-%d | | datetime_format | %Y-%m-%d %H:%i:%s | | default_week_format | 0 | | delay_key_write | ON | | delayed_insert_limit | 100 | | delayed_insert_timeout | 300 | | delayed_queue_size | 1000 | | div_precision_increment | 4 | | keep_files_on_create | OFF | | engine_condition_pushdown | OFF | | expire_logs_days | 0 | | flush | OFF | | flush_time | 0 | | ft_boolean_syntax | + - For some reason, that table formats properly in the preview, but apparently not when viewing the question. Hopefully it isn't needed anyway.

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  • What is the typical maximum number of database connections for Oracle running on Windows server ?

    - by Sake
    We are maintaining a database server that serve a large number of clients. Each client typically running serveral client-applications. The total number of connections to the database server (Oracle 9i) is reaching 800 connections on peak load. The windows 2003 server is starting to run out of memory. We are now planning to move to 64bit Windows in order to gain higher memory capability. As a developer I suggest moving to multi-tier architecture with conneciton pooling, which I believe is a natural solution to this problem. However, in order to support my idea, I want the information on: what exactly is the typical number of connections allowed for Oracle database ? What is the problem when the number connections is too high ? Too much memory comsumption ? or too many sockets opened ? or too many context switching between threads ? To be a little bit specific, how could Oracle Forms application scale to thousand of users without facing this problem ? Shall Oracle RAC applied to this case ? I'm sure the answer to this question should depend on quite a number of factors, like the exact spec of the hardware being used. I'm expecting a rough estimation or some experience from the real world.

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  • Live Messenger SimilarityTable2 file

    - by adrianbanks
    I am trying to free up some space on my laptop's hard disk and am using a tool (SpaceMonger) that will show me a treemap of the whole disk. The problem I have comes from Live Messenger's SimilarityTable2 file. I have no idea what it is for, but I know that it is a sparse file, meaning that it shows as taking up 8GB of disk space, but actually only takes up 132KB of space on disk. The problem is that because SpaceMonger thinks this file is 8GB, it swamps the other files and takes up most of the treemap, making it hard to see the other files that really are large. Is this file safe to delete? If not, how do I make its actual size on disk match its reserved size? If that's not possible, how can I make SpaceMonger (or another treemap tool) use the real size of the file and not the reserved size? EDIT: I've just realised that I have some NTFS junctions set up, meaning that the same set of directories appear twice. Is there any way to stop this happening as well?

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  • visually documenting web server configuration and infrastructure

    - by Alex Ciarlillo
    I have just finished a large re-organization and update of our institutions web server(s). This server hosts 3 virtual hosts, 3-4 blogs, 2 wikis, some legacy static HTML pages, and many hosted documents (PDF, .jpg, .xls). I have organized the site into a structure of something like: /var/www/sites/vhost1, vhost2, vhost3 .../wordpress/blogX .../mediawiki/wikiX Data is in a seperate directory structure so I can run a cron task over it to make sure it is all writeable and such. I then symlink to these data directories for each application. /var/www/data/vhost1, vhost2, vhost3 .../wordpress/blogX/uploads .../mediawiki/wikiX/images All Apache configs are in /etc/httpd/conf.d/vhosts.d/vhost1,2,3.conf On top of this there is also a testing server which mirrors this setup. Once changes are fully tested, they are rsynced down to the live server. All the wordpress installs and mediawiki installs are straight form SVN and updates are done by switching branches or "svn up". So my question is how can I best document to share with a) co-workers, b) possible future replacement, c) myself 6 months from now. Obviously I can make a wiki page, excel document, whatever and fill it with text, but I am looking for a more visual representation that I can use to explain the architecture to less-technical people. Ideally it would be awesome if this visual representation could then be expanded to get more technical details.

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