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• Strange Inode/Ram cache drops happening in CentOS

  - by FunkyChicken

  I run a CentOS 5.7 machine (64bit) with 24GB ram and 4x SAS drives in RAID10 setup. This machine runs nginx/1.0.10, php-fpm & xcache. About a month back the RAM usage of this machine has changed. About every few hours the 'CACHE' is flushed from the RAM, this happens exactly when the 'Inode table usage' drops. I'm pretty sure these drops are related. (see the 2 attached images). This server hosts quite a lot of small files (20M all a few KB big). Not many files are deleted (maybe 100 per hour (total size a few MB max)), not enough to account for the huge Inode table drops. I also have no crons running which could cause these drops. Sar -r output: http://pastebin.com/C4D0B79i My question: Why are these huge RAM/Inode usage drops happening? How can I get Nginx/PHP to use all of my servers RAM?

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• Incorrect viewport on monitor everytime computer is booted

  - by doldertfo

  Hi, Every time I turn on my PC the viewport isn't aligned correctly on the screen - there is always a black strip on the right hand side. This is not a big issue as it can be resolved by pressing the menu button on the screen and doing a factory reset. However it is irritating having to do it every time. I am using a flat screen monitor with vga connections. The weird thing it never used to happen before with the tower Im using. Is potentially out of date drivers a problem? Thanks.

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• I got this message from my host "Exceeded allocated monthly traffic" want to understand problems tha

  - by Amr ElGarhy

  I have a dedicated windows 2008 server and with Allocated monthly traffic: 1500GB, the hosting company sent me "Please take note that the allocated traffic included with your Budget (calculated by GB of traffic) has been exceeded. You will be billed for the exceeding traffic at the end of the month according to the per GB exceeding traffic fee specified on your contract." I checked my Google analytics account and didn't find any big different for the websites traffic this month than previous months. I just want to understand what may cause this sudden increase in traffic this month? may be ftp access? remoting to webserver too much time? or what may cause this? Also, is there any tool in the server to know where the traffic went?

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• What does this IIS memory dump mean? (reserved memory)

  - by Jesse

  My w3wp's are recycling every 60 seconds after using too much virtual memory. I ran the IIS Debug Diagnostic Tool to capture a memory dump before the worker process recycled; the most interesting part seems to be this: Virtual Allocation Summary Reserved memory 4.88 GBytes Committed memory 328.27 MBytes Mapped memory 17.36 MBytes Reserved block count 524 blocks Committed block count 1082 blocks Mapped block count 43 blocks So that 4.88 GBytes of reserved memory seems really big. But neither the DotNetMemoryAnalysis or the regular Memory Pressure Analyzer seems to tell me where that 4.88 GB went. How can I find out?

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• Incorrect viewport on monitor everytime computer is booted

  - by dolderto

  Hello, Every time I turn on my PC the viewport isn't aligned correctly on the screen - there is always a black strip on the right hand side. This is not a big issue as it can be resolved by pressing the menu button on the screen and doing a factory reset. However it is irritating having to do it every time. I am using a flat screen monitor with vga connections. The weird thing it never used to happen before with the tower Im using. Is potentially out of date drivers a problem? Thanks.

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• Proven and Scalable Comet Server

  - by demetriusnunes

  What is the most proven, scalable comet server solution out there that can handle up to 100.000 real-life connections per node using HTTP streaming (not long-poll)? It must be a free, preferably open-source project. We've already tried Meteor (Perl), with no success. Meteor was able to scale just up to 20.000 connections per node. We are looking right now at these options: APE (C++), Orbited (Python), Grizzly (Glassfish), Cometd (Jetty). Any big success stories with any of these?

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• Product Recommendation: Good job scheduler for windows servers?

  - by Bret Fisher

  Looking for a mostly-GUI tool that is low cost (less then $1k, but not required) and allows you to create scheduled tasks and jobs without writing vbscript, batch files, or powershell. Something simple that speaks SMB/CIFS, SMTP, LDAP, etc. for such things as "delete some files based on a list of folders from this text file" or "disable all users with expired accounts" or "delete all disabled users not in this AD group". I've seen some of the big multi-OS enterprise task automation systems and they just look way overkill. We're a windows-only shop, Server 2003 or newer and there's got to be a simple non-agent based product that is drag-n-drop for some of this basic automation. Today we use all three languages mentioned above, and the scripts are not as reliable as a workflow-based-tool would be. Thanks.

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• Folder Size Column on Explorer on Windows Vista/Seven

  - by Click Ok

  I'm a big fan of FolderSize, but unfortunately it works only on Windows XP. Even reading this and this, I'm not convinced that I cannot to have a column showing the folder size on Windows Explorer. Even with all "problems" FolderSize worked like a charm in WindowsXP. In a sysadmin life, FolderSize is explendid. Before select a lot of folders to send to backup in DVDs, I can check directly in Windows Explorer the size of the folders and get a set of folders with 4.3Gb to burn in a DVD. In another situation, I can view in the root folder the size of the bigger folders in the hard drive and start a good strategy of backup/partitioning/transfer to another drive/etc. If desired, I can tell a lot of another needs that in my sysadmin life I need a tool like FolderSize... There is someone that is actively developing a solution to show folder size on Windows Explorer in Vista/Seven Windows? What the problems that I can face if I develop myself that "add-in" for Windows Explorer?

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• How can you enable SMB2.0 on a router running DD-WRT?

  - by jeffreypriebe

  I think the steps are something like: Install DD-WRT on a router with an external hard-drive Install Optware to get Samba Upgrade to Samba 3.6 (the link shows Samba 3.5, but using the NSLU2 optware packages, you can get 3.6 with built-in SMB2.0) ...then a miracle occurs... Then you can use SMB2.0 to connect to your share What is step 4? I can't find it on forums, etc. Am using Microsoft Network monitor to check for SMB2.0 connection, I'm on Windows 7 and have tried network connections on wireless and gigabit wired to the router. No joy. I doubt it matters, but to get ahead of the questions: DD-WRT v24-sp2 (10/26/10) big (SVN revision 15508M NEWD-2 K2.6 Eko) on Cisco/Linksys E3000

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• Compiling LaTeX document makes Google Drive crash

  - by Sander

  I've the issue that when I compile a LaTeX document that is located inside my Google Drive this will after a few turns make the OSX Google Drive application crash. As this is an important document I want to keep it all the time inside the Google Drive location to ensure cloud backup but this ofcourse is not guaranteed if this makes my Google Drive crash all the time. I don't seem te be able to identify what is causing this and I was hoping that maybe some people here have any idea what might cause this? We're talking about a 8 pages document with 3 images, so nothing crazy big or complex.

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• 4K sectors: Why are hard drives moving to 4096 byte sectors, vs. 512 byte sectors? Are 4K sectors a

  - by Chris W. Rea

  I've noticed that some Western Digital hard drives are now sporting 4K sectors, that is, the sectors are larger: 4096 bytes vs. the actual de facto standard of 512 bytes. So: What's the big deal with 4K sectors? Is it marketing hype, or a real advantage? Why should somebody building a new PC care, or not, about 4K sectors? Why is this transition taking place now? Why didn't it happen sooner? Are there things to look out for when buying a 4K sector hard drive? e.g. incompatibility? Anything else we should know about 4K sectors?

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• Does sending e-mail in the name of customers increase the risk of being marked as spammer?

  - by Adrian Grigore

  Hi, We are developing a SaaS website application that lets users send invoices to their clients. Ideally, these e-mails should appear to be originating from our customers, so the sender e-mail address domain will not match the reverse IP entry for our server. In effect we would be forging their e-mail address, but of course with their consent. Will that result in a higher probability of being marked as a spammer / their e-mails being marked as spam? If yes, how bad is the penalty? And what about people who have an e-mail address originating form an SPF-enabled domain? I guess it should be the majority of the big e-mail providers.

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• How important is patch management?

  - by James Hill

  Problem I'm trying to sell the idea of organizational patch/update management and antivirus management to my superiors. Thus far, my proposition has been met with two responses: We haven't had any issues yet (I would add that we know of) We just don't think it's that big of a risk. Question Are there any resources available that can help me sell this idea? I've been told that 55-85% of all security related issues can be resolved by proper anti-virus and patch/update management but the individual that told me couldn't substantiate the claim. Can it be substantiated? Additional Information 1/5 of our computers (the ones on the building) have Windows update turned on by default and anti-virus installed. 4/5 of our computers are outside corporate and the users currently have full control over anti-virus and Windows updates (I know this is an issue, one step at a time).

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• bash starts replacing the characters on the current line insead of moving over to the next line

  - by Lazer

  I use bash shell $ bash --version GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu) Copyright (C) 2005 Free Software Foundation, Inc. $ Sometimes, when typing a command on the prompt that is pretty lengthy and does not fit in the current line, instead of displaying the extra characters on the next line, bash starts again on the current line.. replacing the characters that were there and making a mess. what should happen : |---------------------------------------------| | $ my big long command takes a lot of argumen| | s and does not fit in a single line | | | |---------------------------------------------| what happens instead : |---------------------------------------------| | s and does not fit in a single linef argumen| | | | | |---------------------------------------------| The issue is intemittent If I resize my shell window to really small width, normal behaviour is restored Does anyone have any idea what is happening here? $ echo $TERM xterm $ echo $PS1 \[\e[30m\][\t]\[\e[0m\]\[\e]0;\w\a\]\[\e[30m\][\W]$ $

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• CPU fan twitching phase leds blinking - computer won't boot

  - by SooX

  I have a big problem that I got today. Yesterday computer was "on" normally, I went to sleep without shutting it down. When I woke up, I heard a strange sound and was unable to bring it up from hibernate. I unplugged the PSU. When I plugged the PSU back in, the sound came back. When I opened the case, I saw the fan "twitching" like it is about to start and fan LEDs were blinking. Also, motherboard LEDs were blinking in the same pattern - the first green one has more of luminosity then others. When I cut down the power with 0/1 button on PSU, the fans continue to make sounds like the machine is trying to boot before the capacitors run out and the power dies. Does anyone have a clue what to do? I tried disassembling everything but that doesn't work. I will try with friend's PSU later today.

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• "EISA Configuration" partition

  - by jpbochi

  I have a new Alienware M17x running Vista x64. I just found out that it came with a misterious "EISA Configuration" partition. On Disk Management, my Disk 0 tells me that my HD has about 300 GB. The EISA partition has 12 GB. That's big enough to know why is it there. So, this is more of a bundle question. What is this "EISA Configuration" partition? Is it safe to remove it somehow? If so, how can I delete it? I mean join it with the primary partition, or set it as a secondary small partition.

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• how do I configure IIS to post logs to sql server?

  - by stacker

  how do I configure IIS to post logs to sql server? How want to save ANY log to my site. the site has a lot of views and the data can be big in a very small time. In addition, I want to show analytics of the use, in real time, and for all the time. Is it make sense to save all the logs in sql-server? What is the pros and cons taking this approach have? what other solution can I have?

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• Portable trackball mouse, any recommendations?

  - by joshcomley

  Hi, I know there are other "mouse recommendation" questions, but I'm after some specific advise: Are there any useful and portable trackball mice? I'm particularly interested to hear if the recommendation has been used by the recommender! I have some space for a mouse on my travels, which are mainly on a train. A trackball mouse is the only real viable option as I don't really have room to "move around" a lot. I'm aware of the Genius Traveller 350: And some more crazy inventions: Anybody actually used any of these? Or anyone know of anything a little better? I have the Logitech Trackman, but the receiver makes it wholly unportable (and it's quite big anyway): Any thoughts?

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• Visual Studio 2012 Installation fails on Windows 7

  - by Vipul

  I am trying to install Visual Studio 2012 on Windows 7 Home Premium 64-bit machine, but installation fails. I tried to install all version (premium, ultimate etc..) but getting below error. Machine is not domain joined and logged in as administrative user. I was using Security Essentials but turn it off before the installation. Installation source is from MSDN. Error log is too big to upload, important portion from the log: [2B6C:2580][2012-09-16T23:06:40]: MUX: ERROR: The type initializer for 'System.Windows.Media.FontFamily' threw an exception.

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• Not enough storage is available to process this command

  - by Mohit

  I am getting this error on almost all of the operations on a Windows 7 pro 32 bit machine. By operations I mean anything I do. Update a repo from subversion. Access a local IIS Site. Copy a big folder. Run an installer.and sometime if I try again. It get solved. I think there is something wrong wit windows7 . I searched around and found posts suggesting to increase IRPStackSize value in registry I did that no Luck. I am using Microsoft Security Essentials Version: 1.0.1961.0 as my antivirus package Once this errors starts popping up. I have to restart and then in after some random time. It starts showing up again. Any help is appreciated. I am losing lot of my time in restarting my system or retrying again and again.

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• Very Large number of connections in TIME_WAIT state; Server is slow, ipconntrac

  - by Sparsh Gupta

  I have a nginx server with load balancing and reverse proxy. Right now its behing another nginx but very soon I plan to make it front, where it will receive TCP connections from clients directly at a rate of 500req/second I am having some big troubles with the server. I have pasted my configurations here and I am kinda sure that the problem is with ipconntrac and similar things which are alient to me http://paste.org/pastebin/view/28543 root@load_balancer:/proc/sys/net/ipv4# netstat -an|awk '/tcp/ {print $6}'|sort|uniq -c 67 CLOSING 727 ESTABLISHED 173 FIN_WAIT1 183 FIN_WAIT2 19 LAST_ACK 5 LISTEN 447 SYN_RECV 1 SYN_SENT 27970 TIME_WAIT Its a ubuntu machine with mainly nginx (load balancer and reverse proxy) installed. It surely isnt great. Can you help me understand whats going on and how can I fix it. This is my live server and I am sure its in a bad shape right now. Any document or commands to fix this, or settings I should make to make this better and reduce time wait and fin_wait1/2 better would be awesome.

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• monitoring TCP/IP performance on Solaris

  - by Andy Faibishenko

  I am trying to tune a high message traffic system running on Solaris. The architecture is a large number (600) of clients which connect via TCP to a big Solaris server and then send/receive relatively small messages (.5 to 1K payload) at high rates. The goal is to minimize the latency of each message processed. I suspect that the TCP stack of the server is getting overwhelmed by all the traffic. What are some commands/metrics that I can use to confirm this, and in case this is true, what is the best way to alleviate this bottleneck?

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• Is there anyway to build a raid system without all drives?

  - by xenoterracide

  I'm building a raid1 (ok it will probably be a raid10,f2 but the difference with 2 drives... isn't much) system with 2 1TB drives. However, 1 of the drives I've ordered is bad so I'm RMA-ing it. I'm wondering if I could partition and install to the 1 drive and then rebuild the array when I get the second drive (after I test it of course) My initial investigation doesn't show me a way of creating the array without specifying all devices... and the device the second drive will be is one that has data that I will need to migrate (plus it's not big enough). Is it possible that I could create an array without specifying all devices? or specify false ones and reconfigure to the right ones later? Or some other method I'm not thinking of.

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• DC on Hyper V Host

  - by Saif Khan

  I've read a few similar questions but wasn't clear. I have a small office (13) users and recently purchased a new single server (this is all I have to work with for now). Server specs Memory - 16GB Drives - 6 SCSI (2TB) PROCESSOR - DUAL QUAD I plan on making the Hyper-V host the DC and then 2 VMs, one for a file server and the other an application server. Question - since I am restricted to this single server, would it be a big issue making the Hyper-V host the domain controller? Your input greatly appreciated.

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• Photoshop CS4 slowing down, need advice to improve speed.

  - by Pennf0lio

  Hi, I just recently experienced problem with my Photoshop, It seem that it is slowing down when I am doing graphics design. Big or small files ( from 20 x 20 inch 300 dpi of resolution to 800x600 72 resolution ) it is really slowing down. Particularly when I am panning to my project It just get stuck for a few seconds then back to normal with slow movement. Can you guess what's wrong? I have an updated antivirus and I don't think virus is causing it. other adobe suite is working fine just my photoshop. I am running in windows 7, using Intel Core2 Duo 2.40 Ghz and has an Installed Ram of 2 GB. My primary scratch disk has 21 Gigabyte left and the secondary has a 13.89 GB. I need a solution urgently. I am planning to reformat my computer just to resolve my problem.

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