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  • How bad is it to use a virtual file system with VMWare?

    - by user37244
    IT is running a series of VMs that we'd like to see optimized further: if the VMs' are Windows XP, storing their NTFS images out to the virtual disk (ext3) provided by Linux/VMWare, how much of a hit are we taking - as opposed to having a partition of the host hard drive formatted NTFS to eliminate the translation layer and the extra level of operating system IO preparation?

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  • How to copy/paste LARGE amounts of text in Windows

    - by Johnson
    I am not sure if this is more suited for Superuser or Stackoverflow, but here goes... A little bit of background: I'm learning SQL and was trying to make a very large table which I could use for optimization tests. Something generic with random values. I created a little Java program to do just that, and was able to put out a text file with 100,000 lines, each line being an SQL INSERT statement for a new random record. However, with anything much bigger than 100,000 lines, I had problems either opening/using the text file in any text editor, or copying/pasting the text to the windows clipboard and then into SQL Developer so I could execute it as a script. I'm probably overlooking something really obvious, or doing something really stupid. There has got to be a better way to do this, but I couldn't find anything through Google or Stackoverflow or Superuser. Thanks!

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  • Why should I use a puppet parameterized class?

    - by robbyt
    Generally when working with complex puppet modules, I will set variables at the node level or inside a class. e.g., node 'foo.com' { $file_owner = "larry" include bar } class bar { $file_name = "larry.txt" include do_stuff } class do_stuff { file { $file_name: ensure => file, owner => $file_owner, } } How/when/why does parametrized classes help when this situation? How are you using parametrized classes to structure your puppet modules?

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  • How to implement a secure authentication over HTTP?

    - by Zagorax
    I know that we have HTTPS, but I would like to know if there's an algorithm/approach/strategy that grants a reasonable security level without using SSL. I have read many solution on the internet. Most of them are based on adding some time metadata to the hashes, but it needs that both server and client has the time set equal. Moreover, it seems to me that none of this solution could prevent a man in the middle attack.

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  • Renicing complex multithreaded applications in Linux

    - by Vi
    Applications (especially big Java and C++ ones) often shows up as multiple lines in htop, each have separate PID and separate nice level. Also application can spawn a lot of child processes (like as in aptitude update), so I need to affect both parent one (to make new children have new priority) and child ones (to bring the effect immediately, not after the child terminates) How can I apply "renice" or "ionice" or "schedtool" to already launched big application?

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  • Host's sys admins - can they view files?

    - by FullTrust
    Hi, Just a quick question. When using shared hosting, can system admins (employed by the host) access your files and read your database connectionstring details? Can they also access your database, and view the files, without a connectionstring? I'm assuming there's a certain level of trust, but is this possible/common? Thanks

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  • Debug/step into a Linux boot

    - by bean
    Is there a way to watch Linux boot as though it was a program compiled with GCC on a Linux environment using the -g switch so, say, I can step through the entire boot sequence from GRUB onwards, choosing to step through at C source level or assembly when necessary/desirable, by using GDB or a GDB-like tool? I suspect it would require a virtual machine at least, to watch the boot on a host environment. Any elaboration on this topic of observing a boot would be appreciated!

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  • Having a netbook with closed lid will decrease the lifespan of it?

    - by LanceBaynes
    I need a cheap netbook for "router" functions. [OpenBSD/Scientific Linux/whatever will be on it on OS level]. So once I configure it I will put it somewhere down for YEARS. The Question is: What is the lifespan difference of the netbook if it will be [for years]: with opened lid with closed lid I don't think there will be heat problems, because netbooks doesn't produce too much heat. But will ex.: a closed lid [for years] decrease the lifespan of a netbook?

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  • JFFS2 poor mount performance

    - by Marcin Polkowski
    I run multiple ARM boards with Debian Linux installed. Board is equipped with 512 MB of NAND memory. I've observed that after ~3 months of continuous run booting time increased significantly - it takes over 3 minutes to mount filesystem (JFFS2). System was using about 35% of available storage so I’ve removed unnecessary files (got to ~18%) but this didn't change anything. Then I realized that my software produces directories that are left empty so I’ve removed ~500 empty and unnecessary dirs. This didn’t help either. After system is started I see JFFS2 garbage collector (jffs2_gcd_mtd4) running and occupying over 90% of CPU. Now my question: is there a way to „optimize” JFFS2 filesystem for better performance - faster booting (my system have limited timid to boot up)? It would be great if this optimization could be done remotely - I have no physical access to boards.

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  • No Data Received

    - by Ben Moore
    Out of the blue, around 40% of my website's community can no longer visit, saying they're getting "No Data Received" errors. We've taken our firewall offline, tried going through systems such as Cloudflare and checked our .htaccess to no avail. I've asked affected users to traceroute but the weird thing is it looks like it's being stopped at ISP level. Can anyone suggest other things that may be causing this error?

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  • How do I automate a backup of new MobileMe calendar data

    - by ridogi
    The new MobileMe iCal data lives in the cloud, and the data on your computer is actually a cache. This support article http://support.apple.com/kb/HT4226 from Apple explains how to backup calendar data by exporting to an .ics file. I would like to automate that process via AppleScript, Automator or any other method (paid software is fine). The sticking point with AppleScript is selecting the calendar on the left hand column. In Automator I don't think the available actions support this level of automation.

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  • Windows 7: "Replace All Child Object Permissions" Doesn't Stay Checked

    - by raywood
    I right-click on a top-level folder in Windows Explorer. I choose Properties Security tab Advanced Change Permissions. I check "Replace all child object permissions with inheritable permissions from this object" Apply. I get a Windows Security dialog that says, "Setting security information on" the list of objects that flashes by. But now the "Replace all child object permissions" box is unchecked. What is happening here?

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  • Multiline Equation won't center and align on equals sign

    - by cubicleWar
    I have a multiline equation which I wish to align on the '=' and center the equation block on the page. I have selected align on '=' and center as a group, however the equation group becomes left justified on the page (and aligned on the =). No matter what I do I cannot get it to concurrently center the group on the page and also align on the '='. Does anyone know what setting at what level would cause this type of behavior? (I'm using MS Word 2011 on OS X 10.8)

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  • Creating CLR Assembly in SQLServer 2005

    - by jangwenyi
    I am getting the following error message when I try install my .NET assembly int SqlServer 2005. My .NET assembly references 'ChilkatDotNet2.dll' assembly. Msg 6544, Level 16, State 1, Line 1 CREATE ASSEMBLY for assembly 'myassembly' failed because assembly 'chilkatdotnet2' is malformed or not a pure .NET assembly. Unverifiable PE Header/native stub. Any ideas how to resolve, workaround?

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  • Is Page-Loading Time Relevant?

    - by doug
    Take this (ServerFault) page for instance. It has about 20 elements. When the last of these has loaded, the page is deemed "loaded"--but not before. This is certainly the protocol used by our testing service (which is among the small group of well-known vendors that offer that sort of service). Obviously this method is based on a clear, definite endpoint--therefore it's easy to apply w/ concomitant reliability. I think it's also the metric used by the popular Firefox plugin, 'YSlow.' For my employer's website, nearly always the last-to-load items are tracking code, tracking pixels, etc., so from the user's point of view--their perception--the page was "loaded" well before it had actually loaded based on the criterion used by our testing service (15-20% is a rough estimate). I'm sure i'm not the first person to consider this nor the first to wonder if it is causing micro-optimization while ignoring overall system-level, or user-perceived performance. So my question is, are there are other more practical (yet still reasonably precise) measures of page loading time?

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  • Install Windows 8 without a Product Key

    - by User
    Windows 8 setup asks for the product key at the beginning of the setup without letting you install it. I got the Windows 8 ISO from MSDN but I didn't get enough keys to install it on all my 7 computers. Also, my MSDN subscription level doesn't allow me to get the VL product key to Windows 8 Enterprise. Is there any way I can install Windows 8 for a limited time period like we used to do for Windows 7 ?

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  • Difference between key_buffers and recommendation

    - by Typeoneerror
    I'm looking to add a bit of memory to MySQL on a Linode VPS server on which I've got a small facebook (canvas app) PHP app using MySQL running. I'm not super familiar with MySQL optimization so I'm hoping to find a simple answer. I think I want to increase the key_buffer size (the default is 16M) to something like 32M to start, but I'm not sure if I need to tweak anything else as well. All I've done so far is increase the query_cache_size to 32M from 16M. There's also key_buffer under [mysqld] and key_buffer under [isamchk]. What are the difference between those two? If I have Linode 2048MB (http://www.linode.com) VPS, what would recommend I set the buffers to? I don't expect this site to have tons of visitors, but I'd like it to be as optimized as possible. Definitely way more heavy on the database access than PHP and very few HTTP requests.

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  • Finding the reason of a force shutdown of a VM

    - by Ricardo Reyes
    We have a linux VM running under XenServer that reboots itself with no apparent reason. Checking the /var/log files in Xen we noticed that it's sending a force shutdown to the VM, like this: messages:Dec 6 15:01:07 XenSrvDell2 BLKTAP-DAEMON[7309]: /local/domain/0/backend/tap/19/51728: got start/shutdown watch on /local/domain/0/backend/tap/19/51728/tapdisk-request What we can't find is the reason why the force-shutdown was initiated. Is there any "higher level log" that might tell us who or why triggered the shutdown?

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  • Where the heck is mod_login? (Joomla)

    - by Joey Adams
    I'm a Joomla newbie, and I'm trying to set up a site to require login access to certain articles. Simply setting the article's Access Level to Restricted makes it disappear rather than prompting for a login. I can't figure out how to make a login page because I can't find any menu items or documentation pertaining to mod_login. I want to set at least one page to require login access. Where do I start?

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  • What filesystem comes closest to matching NTFS for support of ACLs, and highly-granular permissioning?

    - by warren
    It seems that most other filesystems handle the basic *nix permissions (ugo±rwx), with maybe an addition here or there. Or can be "made" to handle ACLs through the use of other tools on top of the system. On the wikipedia pages about filesystems (http://en.wikipedia.org/wiki/List%5Fof%5Ffile%5Fsystems & http://en.wikipedia.org/wiki/Comparison%5Fof%5Ffile%5Fsystems), it appears that while some do support extended meta-data, none support natively the level of permissioning that NTFS does. Am I wrong in this understanding?

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  • Free tool to automatically deskew and crop PDF made up of scanned pages [closed]

    - by Pietro M.
    I have several PDFs made up of book pages' scans. The scans are made from two pages at a time and some of these scans are skewed, making text appear slightly tilted. I'm looking for a tool that could allow me to do an automatic optimization by deskewing the scans without losing readability. I've found the GPL software briss to crop the scans in order to have a 1:1 page ratio instead of 2:1, but I don't have any tool to deskew the pages. I stumbled upon unpaper, another open source tool that seems perfect for what I want to do, but that tool is Linux only and it doesn't work on PDF files directly. Any hint is appreciated. Thank you.

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  • Copy CakePHP site under IIS webroot?

    - by dan giz
    I've got a CakePHP application that uses a MSSql server running on windows server 2008r2 enterprise using IIS 7.5 My application is the only website running and is installed into wwwroot with cakephp installed to c:\inetpub (one level up from the site) I want to copy this site so i can have a development version to work on, without conflicting with the live site. how do i go about doing this? i'm confused, since previous set ups i've seen have a different folder in wwwroot for the site itself.

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