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• CPU clock scales down so computer is unusable after switching to battery

  - by Ryan

  When I am plugged in my laptop runs great however when I unplug it and I'm on battery power my CPU clock speed scales down pretty much all the way. I know this is happening by monitoring the clock speed. When plugged in it will usually stay between 1000MHz and 3000MHz but when I unplug it it quickly scales down to less than 500MHz and will get as low as 100MHz and it will NEVER scale up at all on battery power. After I plug the power back in it will then begin operating normally in about a minute. I have tried setting the MIN and MAX CPU performance in power options to 100% and have tried messing around with cooling settings which seemed to be a problem with HP laptops. I have a Toshiba Satellite M500-ST6444 running Windows 7. The BIOS is up to date. I have tried two versions.

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• How much power supply do I need for my server, and could a shortage be causing my odd crashing?

  - by dolan

  I have 5 servers, all with similar hardware (i7, four 2tb 7200rpm drives, two 4tb 5400rpm drives, 430 watt power supply), and lately the machines have been freezing up. This has gotten worse in the last day or so, and I can't pinpoint any explanation. One recent change was adding the two 4tb hard drives. The crashes happen most often while running a large Hadoop job, so I was originally thinking the load was causing some issues, but last night one server just froze without any heavy load on the box (or so I think), other than HDFS (Hadoop's distributed file system) was probably rebalancing itself since two of the five nodes were offline. If I plugin a monitor and keyboard to one of these frozen machines, I can't get any response or feedback on the screen. Any ideas on possible points of failure and/or different logs I can look at to investigate? Thanks Edit: The systems are running Ubuntu 10.04 Edit 2: More on hardware: intel core i7-930 bloomfield 2.8ghz processor (quad core) 12gb (6 x 2gb) kingston ddr3 1333 ram antec earthwatts green 430 power supply msi x58m lga 1366 motherboard

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• some websites not opening completely

  - by mkk

  Hi everybody, I am using bsnl broadband connection, modem: wa3002g1 os: xp(86x) / vista(64x) A few days back I have changed the modem (don't know the previous modem no) because of some issues. since then I am not able to open most of the websites in firefox, IE6/8, chrome, opera. If i connect with other network like reliance data card, those websites are opening, if i connect bsnl the problem will be same again. I called to customer care many times, but no use. Please help me to find the solution. Thank you in advance.

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• Are there ways to write php/python code to run as hooks in the Apache Request Processing pipeline?

  - by SB

  Does anybody know of any modules that provide the functionality to write python or PHP code to run as hooks in the Apache request processing pipeline? For instance, mod_perl lets me write PerlModules, which can contain handlers for the header parsing phase, content delivery, and even filters. I would like to do something similar in other scripting languages. I could write it in C, but the goal is to deploy a module that would work across a number of systems. If I deliver it as binary in C, then it would require 64/32-bit versions and some other issues. With perl, I can just require certain modules installed and mod_perl2.

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• Flash Media Server slow over SSL

  - by Antilogic

  We are using FMS to host a VoD site. We host FMS internally (we do not use a CDN). We recently installed an SSL certificate to alleviate connection issues for clients (they're networks either block or don't support RTMP), however we're noticing that when streaming in RTMPS connections are drastically slower (on the order of Mbps). I know SSL causes some amount of over head but both client and server show almost no signs of exertion. Speedtest.net and a locally hosted speed test confirm that bandwidth is not an issue. I'm really not a network guru, so I'm at a loss as to where to check next. Do any of you have an idea why streaming media would run so slow over SSL?

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• Have to reset wireless frequently on iPad / Macs connected to Cisco WRV200

  - by retailevolved

  I have a Cisco WRV200 set up in our small office. The wireless signal works great for PCs, but I have found that Macs and iPads have to frequently reset the connection. It will be working for about 10 minutes, then stop. To fix it, I just turn off Airport and turn it on again. On an iPad, I have to go into settings, shut the wireless off, and then turn it on again. The router is broadcasting mixed B/G on channel 6. Security is WPA-PSK2. Anybody out there had similar issues with their router? How can I fix it?

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• Ubuntu/Linux version recommendation for HP dv6 3122TX?

  - by sanjayav

  I purchased a HP dv6 3122TX recently and after installing Ubuntu 10.10 64 bit I ran into multiple issues like, The wireless driver is not supported by Uubntu. (1) [The driver is RaLink RT3090 ] The ethernet stopped working sometimes for no reason [The driver is Realtek RTL8111/8168B ] "Corrupted low memory at ..." issue which is described as a kernel bug in Ubuntu support forums. (It started to take me to a terminal instead of the GUI and couldn't start x server after that) As I'm not an expert Ubuntu user I got fed up of all these issue and got back to Windows 7. But I need an Ubuntu installation up and running for my development work. What are your suggestions about a reasonable Ubuntu version that I should try? Or a different Linux variation? Should I stick to a 32-bit version? It'd be great anyone can give some advice on this issue.

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• Very slow Windows 7 on Thinkpad T61

  - by bogdanf

  I have a very strange problem with my fresh install of Windows 7 Profesional, 64bits on my Lenovo Thinkpad T61 : The overal performance is very slow, the disk is constantly spinning, even without any program running (after boot, no other programs installed). The boot process is very slow itself (4-5 minutes). I mention that the laptop was fine on XP until the upgrade. Thanks ! Additional info (as requested by the comments) : 2GB RAM Yes, I added all the manufacturer (Lenovo) drivers and updates (using the utility provided by Lenovo) Tried with both 32 and 64 bits editions. The 32 bits one is performing a little better, but not very usable either. The hdd has enough space (20 GB or so) The problem is still present on a fresh install, so no recycle bin emptying or unistall programs (there aren't any except plain 7) would help. I'm not a newbie, so no obvious causes are left unchecked

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• Apache CPU usage stays at 100% even when there are no requests

  - by Leirith

  Hi, I've been running the Apache HTTP server benchmarking tool (ab) on my new Apache server to test performance. I noticed that with a command like the following: ab -n 100000 -c 1000 http://www.mysite.com/ The CPU is used 100% by the apache2 processes during the testing. When the test concludes, usually with the following error just before the last requests are made: apr_poll: The timeout specified has expired (70007) Total of 99960 requests completed the CPU usage remains at 100%, and it's all being consumed by apache. I am using the worker MPM with and running PHP with mod_fcgid. Any advice as to why this is or what can be done to stop it would be appreciated.

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• I bought a domain name at GoDaddy and hosting at Dreamhost but the first doesn't work!

  - by janooChen

  I added the Dreamhost's nameservers like 12 hours ago to: I entered to the following panel: Nameservers -> Set Nameservers (I have specific nameservers for my domains) and added Dreamhost's nameservers liek this: Nameserver 1: NS1.DREAMHOST.COM Nameserver 2: NS2.DREAMHOST.COM Nameserver 3: NS3.DREAMHOST.COM So now in the admin panel I see this: Nameservers Nameservers: (Last Update 2/10/2011) NS1.DREAMHOST.COM NS2.DREAMHOST.COM NS3.DREAMHOST.COM But I get this when I run the analysis tools: Attention Required! There are critical issues Accessing Your Web Site Accessing Your Web Site Properly configuring your domain name and hosting account ensures that visitors can access your site. Did I do something wrong or I have to wait 24 to 48 hours? (Dreamhost does display my page because I can access the other domain name I bought together with the hosting) (By the way, if everyone uses the same nameserver, how will go GoDaddy know which is the hosting space that I purchased among all others)? Thanks in advance.

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• spurious hardware memory 'errors' on hp dl380 g5's being generated

  - by friedchicken

  Hi All, i've got 2 new HP dl380g5 servers running HP's esxi4 patched to 219382. they have both been patched up to the latest hp firmware levels (firmware cd 8.7) both are running 32gb (4 x 8gb sticks) both servers are showing the same symptoms - the memory lights come on for two (random) dimms on the front of the server and the health led turns red. sometimes the server stays up and running with no problems. othertimes the server locks dead and only a power reset can bring it back. there is nothing showing in the ilo logs and nothing within the vmware hardware monitoring. the memory has been replaced i've got other customers that have been running dl380g5's with out any issues on esx3.5 - this is our first vsphere deployment with them. these are meant to go live soon so any advice would be great. thanks in advance.

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• Linux Software Raid runs checkarray on the First Sunday of the Month? Why?

  - by mgjk

  It looks like Debian has a default to run checkarray on the first Sunday of the month. This causes massive performance problems and heavy disk usage for 12 hours on my 2TB mirror. Doing this "just in case" is bizzare to me. Discovering data out of sync between the two disks without quorum would be a failure anyway. This massive checking could only tell me that I have an unrecoverable drive failure and corrupt data. Which is nice, but not all that helpful. Is it necessary? Given I have no disk errors and no reason to believe my disks have failed, why is this check necessary? Should I take it out of my cron? /etc/cron.d# tail -1 /etc/cron.d/mdadm 57 0 * * 0 root [ -x /usr/share/mdadm/checkarray ] && [ $(date +\%d) -le 7 ] && /usr/share/mdadm/checkarray --cron --all --quiet Thanks for any insight,

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• X58 RAID 10 - Am I forced to use Sata2?

  - by Avi

  I'm building a new dev computer. It will be running a few VMWare Worksation virtual machines. I was advised on Serverfault to use Raid10 for performance. Raid 10 uses 4 disks. I contacted my supplier who suggested a gigabyte X58A motherboard and 4 Western Digital Caviar black 6Gb/s disks. I have checked the spec for the X58A board, however, and it says: SATA 3Gb/s: RAID 0, RAID 1, RAID 5, and RAID 10 SATA 6Gb/s: RAID 0, and RAID 1. I'm losing half the bandwidth because I'm forced to use SATA2! What should I do?

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• Graphic Setup tune-up checklist

  - by Click Ok

  I was trying to play the game Warzone 2100 and the games runs fine, with nice speed, but the screen stays with a horizontal lines "flickering"... My PC have a integrated GeForce Go 6100 vga. Ok, not a powerfull vga, but it's not the end of the world to run a "simple" game like this (compared with another games that ask you send your eyes to purchase a expensive vga). So, I think that the problem can be of the configuration of my machine. I use it in first instance for programming jobs, so I underpay attention to video setup. I would like about a checklist to know if my PC is "ready" to games. By example, I know that I need: Lastest vga drivers Updated DirectX and OpenGL What you suggest? There is too some good programs to test performance and suggests improvements in the system? Thank you! PS: I'm using Windows 7

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• Windows DFS Limitations

  - by Phil

  So far I have seen an article on performance and scalability mainly focusing on how long it takes to add new links. But is there any information about limitations regarding number of files, number of folders, total size, etc? Right now I have a single file server with millions of JPGs (approx 45 TB worth) that are shared on the network through several standard file shares. I plan to create a DFS namespace and replicate all these images to another server for high availability purposes. Will I encounter extra problems with DFS that I'm otherwise not experiencing with plain-jane file shares? Is there a more recommended way to replicate these millions of files and make them available on the network? EDIT: I would experiment on my own and write a blog post about it, but I don't have the hardware for the second server yet. I'd like to collect information before buying 45 TB of hard drive space...

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• Windows 7 login automically puts "IIIII....." in password, so it is impossible for me to login?

  - by xaisoft

  I have no idea why this is happening. I have ran multiple malware programs, I have run anti-virus programs, I even restored to an early point in time. The keyboard letter "I" doesn't appear to be stuck, I am using an external keyboard by the way. When I reboot the computer and get to the login screen, when I press ctrl-alt-del to login, it the password textbox starts putting "IIIIIIIIIIII......", it only stops when I bang on the keyboard. I also noticed at one point that my caps lock on turned caps off and caps lock off turned caps on and some other weird behavior. I have tried search online for similar issues, but no luck.

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• Evaluate a vendor laptop before deployment to user?

  - by NetWarrior

  I get numerous requests from executives and users for new smaller laptops for travel purposes. Most of my evaluation is based upon whether or not it can run certain applications. Mainly lotus notes, office, and video. Most of the laptops include windows 7 OS, and are fully loaded with ram, a high-end processor and a integrated graphics card. My boss whats me to document the usefulness of the laptop and performance. I'm just a little confused on how to setup a document that can be used by members of the IT department for future evaluations.

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• Postfix sending mail back to itself? (Ubuntu 9.10)

  - by webo

  I setup Dovecot and Postfix using the "Dovecot-Postfix" package with SASL and all that. The Dovecot part seems to be working fine but I'm having issues with Postfix. Whenever I send a message to another address through the postfix server, two things happen. the message never gets to the other address (even when I request a delivery notification, it says that it's been delivered but it's not in the spam box in the other inbox or anything) The message comes back to my inbox through Dovecot as though I sent it to myself internally. e.g. I send an email through my postfix server to my gmail account, 10 minutes later nothing shows up in my gmail account but the message comes back to me as though I was sending it to my internal address (with no errors) Any ideas?

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• Windows 7 x64 Hard Freezing (again)

  - by Lanissum

  Awhile ago, my computer was randomly freezing a few minutes after booting, and I ended up replacing the CPU and mobo after testing the RAM and hard drive, I also couldn't find anything wrong with the video card. So after replacing the presumably faulty hardware, everything worked fine for about a month and a half. All of a sudden, My computer is randomly freezing a few minutes after loading up any intensive application (games, mostly). Most of the time it just freezes with the current frame until I hard reset, although once it printed a BSOD message stating that dxgmms1.sys was to blame. The only difference between these two episodes I can think of is that I can do word/internet/work without issue now, as opposed to the near uselessness my computer was rendered last time. For those of you who want to know, I tested my memory with memtest86 (for 64 bit machines). I can't figure out what could have started this latest round of issues, the event logger just states that a kernel-power event has occurred (like last time) but I think thats just a generic "this machine has rebooted after a sudden shutdown" message.

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• Maximum burn speed keeps decreasing from Nero?

  - by Bob King

  I have a 16x DL DVD burner in my work machine (XP SP3). I'm using 8x TDK DVD+R media. The first dozen or so disks burned fine using Nero, but after that I started to coaster every disk. I asked Nero to calculate the maximum speed, and it calculated it at 4x. This worked for a few disks, then the same issues. I'm currently burning at 1.2x. I've since tried other brands and full 16x compatible disks, I can't get my burn speed to be recognized as any faster than what it's currently at. I've tried uninstalling Nero. I've tried burning directly in Windows, and also tested an MP3 CD in iTunes, and no luck. Any suggestions, short of reinstalling Windows, would be great!

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• Migrate TFS 2010 Application Tier to another server on the same domain

  - by Liam

  I'm in the process of looking into the possibility of moving our TFS 2010 Application Tier to another server from the one it is on at the moment so that we can repurpose the hardware. I've been looking through the Microsoft Documentation over at http://msdn.microsoft.com/en-us/library/ms404869.aspx, but this assumes that everything is stored on one box (Application and Data tiers). In my setup however, our Data tier is separate to the Application tier and will be staying where it is. I think I should be able to do this but for my own peace of mind, would there be any issues or implications if I merely installed the Application Tier on the new hardware and then connected it to the existing data tier?

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• Need hard disk recommendation for linux home server.

  - by neotracker

  Hello, I'm planing to build a little linux homeserver. It will mainly be used for storage and maybe as an media pc. I plan to build a software raid5 with 4 1.5TB or 2TB hard drives. I already decided to use the Western Digital Caviar Green 1.5 TB drive, but then I read about some problems with the WD green series about many drives failing and that they are not recommended for raid anyway. Of course, I couldn't find much facts on the issues so I thought I just ask here ;-) What hard drives would you recommended for a software raid5 setup? As I only need it for storage, the whole thing doesn't have to be too fast. So I prefer a cheap price and silence to great performance.

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• How to check if redis master is OK?

  - by e-satis

  On the documentation, they advice the monitor command. But it has a 50% performance penalty for the whole system, and how should I do that ? Whatching the ouput using SSH until I don't see anything ? Let's say I have 3 servers: 1 with a redis master, 1 with a redis slave, and one with my website querying the redis master. How can I, from my website server, make cleany the decision to fallback to the slave by sending the SLAVEOF NO ONE command ? My first step would be to put some kind of timeout check with a simple ping, just to be sure the server is online. But for redis specifically, I have no clue.

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• Azure VM : Connection refused by host

  - by Simon Kérouack

  I recently stopped a subscription with 14 VMs in it and restarted it a few days later. Now all my VMs are working just fine at the exception of 6 used for MongoDB. They respond to ping and so they show as online in the azure dashboard but they do not answer to anything else. I tried (from different locations, in and out of the azure cloud) ssh : connect to host * port *: Connection refused telnet : Unable to connect to remote host: Connection refused mongo : exception: connect failed The ports for ssh and mongo are opened in azure. I tried restarting the VMs a few times trough the azure dashboard, they seem to restart successfully but still refuse all connections. I already looked for similar issues and the best solutions I found was to wait... the issue has been happening for 7 days and waiting is no more an option.

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• VMware ESX 3.5 Host Health shown as unknown

  - by dunxd

  I have an ESX 3.5 update 5 cluster of five host servers, all fully patched as of this Friday. Today I noticed that one of the servers has the Hardware Health status as unknown in Virtual Center Infrastructure Client. When I look at the Health Status view under configuration for that host, all the items are status Unknown. The server is exactly the same configuration as the others - same model (HP DL360 G5), memory, NICs etc. I have tried restarting the management service with service mgmt-vmware restart but this has not resolved the issue. Asides from this, I am not seeing any issues with the cluster - however, I hate having a blind spot like this. Any ideas?

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