General :: High IOWait - System Starts To Slow Down

Jan 5, 2010

I've been having a problem in Ubuntu 9.10 recently where starting about 2 minutes after startup my computer slows down and becomes unresponsive. I believe the problem is associated with a high IOWait because I have the system monitor applet on my Gnome Panel and it displays 100% IOWait every time my system starts to slow down. I have tried booting into other kernel version and the problem persists. I don't really know what IOWait is or how to diagnose this problem further. I've looked around online and it seems like you have to find a specific process that is causing the IOWait, but I don't understand how to go about doing that.

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Ubuntu :: 9.10 - High IOWait And System Slow Down

Jan 5, 2010

I've been having a problem in Ubuntu 9.10 recently where starting about 2 minutes after startup my computer slows down and becomes unresponsive. I believe the problem is associated with a high IOWait because I have the system monitor applet on my Gnome Panel and it displays 100% IOWait every time my system starts to slow down.

I have tried booting into other kernel version and the problem persists. I don't really know what IOWait is or how to diagnose this problem further. I've looked around online and it seems like you have to find a specific process that is causing the IOWait, but I don't understand how to go about doing that.

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Ubuntu Servers :: IOwait High, No Disk Writes, Server Hangs?

Jul 24, 2011

I run a website that a very steady flow of traffic and Im seeing recent issues that I just dont like. Server is 10.04.2 on a supermicro i7-950/6gb RAM with two 500gb Samsung F3 drives in a software RAID1 (1x5400, 1x7200) and for several weeks, its been running very well. Recently, Im seeing the server hang for 5-20 seconds. IOwait goes through the roof, nothing can write to the disk. Apache logs stop, redis fails to rebuild caches, mysql errors and then it continues and moves back to normal operation

/ is ext4, the kernel was 2.6.32-server-x64 but since updating to 2.6.38-server-x64, the issue has dropped from maybe once per 10 minutes to once per 15 minutes. 3 IOstat copy/pastes show this when it hangs.

Code:

Total DISK READ: 0.00 B/s | Total DISK WRITE: 0.00 B/s
TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND

[code]...

No smart errors or smart diags show any issues with any of the disks and kernel.log shows near nothing other than a process hang, 120 seconds about 5 days ago.

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General :: Extremely Slow Write On Disk With High CPU Usage / Make It Up?

Sep 4, 2010

My problem is extremely slow write on hard disk and 100% cpu usage and it happens when I want to write something on the hard derive not any other external derive.

Tried a fresh ubuntu install. No change. I am not even sure if it is a software or hardware problem.

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Ubuntu :: Type 'yes' In The Terminal Without The Quote Marks And Hit Enter Causes A Loop, Cpu Starts To Run High?

Jun 26, 2011

Maverick Meerkat 10.10Type 'yes' in the terminal without the quote marks and hit enter causes a loop, cpu starts to run high.

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General :: High Memory Utilization By System?

Nov 11, 2009

I have a server running samba process and there are about 70 samba users connected at a time. The system has 4Gb of memory and it seems each samba process is utilizing only 3352Kb of memory.
When I run the command
pmap -d (pid of samba)

It gives as:
b7ffa000 4 rw-s- 0000000000000000 0fd:00003 messages.tdb
bfe46000 1768 rw--- 00000000bfe46000 000:00000 [ stack ]
ffffe000 4 r-x-- 0000000000000000 000:00000 [ anon ]
mapped: 33384K writeable/private: 3352K shared: 20504K

But when I run the top command, it results as below:
Tasks: 163 total, 1 running, 162 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.9% us, 4.9% sy, 0.0% ni, 93.3% id, 0.8% wa, 0.2% hi, 0.0% si
Mem: 3895444k total, 3163192k used, 732252k free, 352344k buffers
Swap: 2097144k total, 208k used, 2096936k free, 2487636k cached

Why could the system be utilizing such high memory? By the way, the server is not running other processes. The samba version running in it is 3.0.33-0.17.

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General :: NFS - System Is Running With A High Load - Iowaits And Low Responsiveness

Oct 31, 2010

After changing servers and moving things around, I have one system which serves the /home directories, and for some reason, it is extremely slow. I've looked for duplicate IPs, signs of a HW problem, etc. and cannot figure out why the system is running with a high load, high iowaits, and low responsiveness. The servers and clients are slackware 12.2 and 13.1 respectively.

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General :: Unusual High Cpu And System Load After Installing Reddit?

Apr 10, 2011

After installing reddit, my ubuntu stuck with high cpu usage and system load.

Code:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
8634 reddit 20 0 12180 8960 2572 R 12.1 0.9 0:00.51 paster
8611 root 20 0 23756 17m 3816 R 11.8 1.7 0:00.99 paster
8613 reddit 20 0 23200 17m 3908 R 11.8 1.7 0:00.96 paster
8617 reddit 20 0 15072 11m 2688 R 11.8 1.1 0:00.69 paster
8620 reddit 20 0 14372 10m 2680 R 11.8 1.1 0:00.66 paster

[Code]...

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Ubuntu :: Seems Slow In Some Areas - High CPU Usage?

Jun 15, 2010

I've been using Ubuntu consistently for about three days now. I really, really love the interface and how everything works and all that, but I've been having a couple of weird problems with speed.

Graphics things seem to work really well. When I go into the overview of all my workspaces, it's instant and looks great. The problem is when I open and use some applications.

For example, when I open up the software center, it takes longer than it did the first time to start up. Also, when I drag windows off from being maximized, it takes literally about five seconds for it to show up as being dragged around by my mouse.

When I look at the system monitor, about 20% of my CPU cores are constantly being used. That's 20% each. I have a 3-core CPU, could that be the problem?

Another example: when I went to ..... just now, it would take a second for any volume changes in the video to register.

And I also have smooth scrolling in firefox, but it's very unresponsive now. It's slow as all hell. Even notifications are showing up more slowly.

So, what's the deal? What could I have done wrong?

CPU: AMD Phenom II X3 2.8Ghz
GPU: ATI Radeon HD 4860 1gb
RAM: 4gb

One more thing: I have really bad screen tearing when I try to move windows around, as if there isn't any vsync on. Where can I turn it on or fix this?

I'm still pretty new to Ubuntu and Linux, but I'm an advanced computer user. Since I feel linux is killing my CPU I think I'm going to boot back into Windows 7 for now, but if I can fix this problem I think I want to keep Ubuntu as my main OS after this, having Windows for games, unless I can get Wine to work right with them.

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Slackware :: Slapt-get Slow When Downloading / High It?

Nov 30, 2010

I am a newbie regarding the Slackware, though i have some millage on Ubuntu. Anyway, i have Slackware 13.1 and slapt-get is really, really slow when downloading packages, even when i do slapt-get -update the slowness is just killing me

The second question is somewhat different. How can i view dependencies on which a particular application is depended?

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General :: Xorg High Cpu Usage System/video Not Running Smoothly?

Feb 18, 2011

I have just started to have a problem with Xorg it is always using at least 30% of my CPU, and the whole system does not run smooth so if I play a video it does not run smooth, it judders, also even if I drag an icon it judders across the screen. Im running Ubuntu 10.10 2.6.35-25-generic x86_64 VGA compatible controller: nVidia Corporation G98M [GeForce G105M] (rev a2)

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General :: Test A Code That Needs To Have High DiskIO And DiskBisy In System Environment?

Oct 13, 2010

I need to test a code that needs to have high DiskIO and DiskBisy in a Linux environment. Is there any way that i can use to test this urgent need of mine.

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Ubuntu :: USB Copying Starts Slow And Gets Slower?

Feb 3, 2010

I know there were threads on USB problems already, but there does not yet appear to be a definitive solution to USB speed problems on Karmic.flash drives are very slow to copy to. running lsusb in terminal, it appears to be running at USB 1.1 speeds, but even that doesn't seem to be the whole picture. When I copy an 800mb file to the drive the first 150mb transfer in a matter of seconds, then the mb/s seems to get slower and slower, starting at about 12 and ending at about 5. If I copy multiple files to the USB at the same time the problem seems to get even worse, taking about 10 minutes to copy 1600 m/b - less than 1 mb/second.

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Fedora :: Unrar Suddenly Slow / Make It High?

Dec 11, 2009

I've just noticed that unrar is suddenly taking minutes to extract instead of seconds.

I can remember if its recently been updated, but I've uninstalled and reinstalled it and the version is: unrar.x86_64 0:3.7.8-3.fc10

I've found a few Ubuntu posts about it on Google, but in true Ubuntu fashion nobody has any answers!

What's odd is that when I unrar a file from (Nautilus or "unrar x *.rar") it takes say 4mins, then if I do it again it takes 15secs, like as if its caching somewhere.

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Server :: Squid Performnce Very Slow / Make It High?

Nov 9, 2010

I am using Redhat linux 9.0 and using squid proxy server.My problem is tht i my squid server is responsing very slowing. whenevr i try to open sites the site starts to open after 3 or 4 seconds and often squid does not open the complete site. its stop the site in middle. My squid Configurtion is below. Is there any need to tune the system parameters Like from 'SYSCTL.conf' for better diskd performence or another problem. at this time i am using default system parameters. Please help me in detail what is the reason of squid slow performence if there ia a need of any system tuning please tell me in detail. I am very thankfull to you.I am really worried about slow performence of the squid. I also try to offline_mode on but the same problem. code...

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Debian :: Nvidia Drivers - X Server Starts Very Slow

Jul 22, 2015

Last week I decided to try Debian after some few years of using Arch. And I faced strange Xorg problem. Timings in Xorg.0.log (pastebin) are terribly high. And this is how the log ends:

Code: Select all> tail -n 20 /var/log/Xorg.0.log
[    19.493] (**) Option "config_info" "udev:/sys/devices/platform/eeepc-wmi/input/input17/event14"
[    19.493] (II) XINPUT: Adding extended input device "Eee PC WMI hotkeys" (type: KEYBOARD, id 11)
[    19.493] (**) Option "xkb_rules" "evdev"
[    19.493] (**) Option "xkb_model" "pc105"

[Code] ....

Latest timing may be even higher than 250 seconds.

Code: Select all> lspci | grep -i vga
01:00.0 VGA compatible controller: NVIDIA Corporation GM107 [GeForce GTX 750 Ti] (rev a2)

I'm not sure if this information matters, but:

Code: Select all> dpkg -l | grep nvidia
ii  glx-alternative-nvidia                0.5.1                                amd64        allows the selection of NVIDIA as GLX provider
ii  libegl1-nvidia:amd64                  340.65-2                             amd64        NVIDIA binary EGL libraries
ii  libgl1-nvidia-glx:amd64               340.65-2                             amd64        NVIDIA binary OpenGL libraries
ii  libgles1-nvidia:amd64                 340.65-2                             amd64        NVIDIA binary OpenGL|ES 1.x libraries

[Code] ....

Debian Jessie 8.1

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CentOS 5 Server :: Apache Slow To Respond / Make It High?

Nov 16, 2010

I have CentOS 5.5 x86_64 with Apache, php and mysql.
I have just installed OTRS (helpdesk - trouble ticket system) on that server and no users.
This system works with perl, apache and mysql.
I notice that is slow to respond and at times unresponsive the apache welcome page. code...

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Fedora :: Play High Resolution Videos - Appears To Slow Then Becomes Choppy

May 2, 2010

I'm having issues playing HD videos ( some with 720p level, much more apparent with 1080p level one) The video appears to slow then becomes choppy, becoming de synced from the audio that carries on as normal. This occurs with both VLC player and XBMC, though the latter is better. My specs: Fedora 12 3.2 Ghz P4 processor 1Gig ram Radeon 9800 xt gfx card (I couldn't get the 9.3 ati driver to work)

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OpenSUSE Hardware :: Slow External Hard Drive / Make It High?

Jan 7, 2010

So I just reinstalled OpenSUSE 11.2 and I went from having 20-30 mbps speed to and from my 1 tb usb ntfs external hard drive to having about 1 mbps transfer speeds now. Is there any suggestions for how I can fix this? I know it can go faster, I just need to figure out how. and would setting acpi=off at boot affect this?

Opensuse 11.2
KDE 4.3
64 bit
EXT4 main disk
NTFS external

fdisk -l code...

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Ubuntu Networking :: Slow Network Speed / High Packet Loss

Apr 22, 2010

I have problems with my network speed when i ping my proxy server I end up getting a high packet loss generally more than 30%.I have tried to use various network monitoring softwares like etherape, wireshark, tcpdump but I am not able to get to the bottom of the problem.basically I am trying to find out where the lost packets are going.

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Fedora :: Slow Down High Nautilus Memory Usage After Loading Folder With Lots Of Images?

Nov 22, 2010

I was browsing my folder with lots of images, after finished i close nautilus and i notice that my computer became slow, so i'll check it with system monitor and had found that nautilus are using almost 100mb of ram (opening 4 tabs). I'm not sure if this was normal or not because i try to reopen the same folder with pcmanfm and it only consumes less than 20mb of ram (opening 4 tabs).
here's the screenshot from system monitor .

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Ubuntu :: USB Disk - Slow Transfer Speeds And Slow System?

Apr 17, 2011

Whenever I transfer a movie into my 16GB USB flash disk, my whole system becomes windows-like and unusable!

When i drag the file(s) into the USB disk folder, it starts out fine and pretty darn fast (25mb/sec) then slowly decreases until it's unbearably slow (3m/sec) and as a side effect my whole system starts deteriorating. I basically have to wait for the file to finish transferring before i can use my desktop again!

This has been happening with every version since Karmic (all 64bit)- I put up with it because I don't use the USB stick that much.. but lately it's been my go to source for transfering large files to/from work.

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Ubuntu :: USB Flash - IOWAIT And Hanging

May 28, 2011

Most of the time when using USB flash drives under Linux, the OS will lock up at 100% IOWAIT, with a load average of 12-18. Even my music stutters and stops. Using USB drives makes my Core I7 3.0GHz HyperThreaded act like a Pentium 2 running Vista. It's embarrassing. A client asks for a file, and it takes me 2 hours to copy it. This is a deal breaker. I've been trying to find a solution. If I can't, I'm sorry to say I'll be leaving Linux for something that can use USB drives. I've been using Ubuntu for 4 years, I'd hate to leave. Don't take that as threat, just a stark fact based on business decisions.

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General :: Whole System Very Slow And Keeps Crashing?

Jun 27, 2010

Not really sure I'd call myself a newbie with Linux, I've been using a few different distros for a little over a year now.. maybe longer.Though, I'm not very good with terminal just yet. I don't know all the code stuff.I put this system together about 6 months ago. It's comprised of about 50/50 new and used parts. Everything should be listed in my signature file. All was running just fine when the build was complete. But now it seems every day its getting slower, crashes almost every 30 mins.. USB 2.0 runs very slow and lags to the point it just stops altogether.

I really wish that I could test on Windows, or any other OS for that matter. But I'm down to my last hard drive, a very slow (4k RPM?) tiny (40GB) Maxtor IDE. I don't even want to waste any more of my time trying to install/reinstall any OS to the thing. Don't think my mobo allows for booting from USB flash drives, and still yet with it running USB so slow what would be the point?I've tried Ubuntu 10.04 and was very satisfied... except that it won't allow any usage of my Azio PCI wireless N card. The light goes on and it flashes as if its trying to connect, but it won't connect to any secure connection.

So here I am back to 9.10 and wondering if my hdd and/or RAM could be causing some sort of problem? Is RAM being a bottle neck? It's DDR333 but CPU clocks it320 because of something to do with the 800FSB and whatever stupid Intel chipset is on mobo.Can someone please give me a suggestion as to where to start? I have no other computer and really need it for school and work. I have no money for new system or even any more parts.It's getting me so peed that I'm about ready to take a 4 pound sledge to it

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General :: Internet Slow In System / Why Is So?

May 27, 2010

I am using firefox in my fedora o.s and its very very slow when compared to my IE of windows. sometimes i get an error saying "server not found",it mainly takes a lot of time in in the first stage of connecting the site, that is looking up www.google.com(bottom left corner of your browser)

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Server :: Difference Between IOWAIT% / IDLE% / LOAD AVG?

Oct 27, 2010

Can anyone explain the difference between IOWAIT%/IDLE%/LOAD AVG? We have a 3 servers (oracle rac) attached to a SAN. When we added another CPU to our 3rd server, the IOWAIT across the oracle rac dropped a lot. We used to get pretty high IOWAIT % before. So I don't really understand how the extra CPU could do this. I thought the IOWAIT % is high because the server is waiting for the SAN, so I thought the SAN was the bottleneck. So I don't really understand the difference between the 3 things (iowait, idle and load avg).

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General :: System Laptop Slow Startup / Reason Of This?

Oct 21, 2010

Just got this Dell M4400 with Redhat EL5 installed.
After I setup the xorg.conf for dual monitor, the startup became extremely slow. Once I type in the user name and password, it just blacks out with the mouse curser still visible. This remains for about 3-4 minutes and then I'm in.

I thought it was my X file, so I overwrote the xorg.conf with my original file and restarted my X. Sadly, it still does that.

What could be causing it? Do I have to reinstall video driver or something?

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General :: Broadband Very Slow On Newly Installed System / Increase It?

Jan 22, 2011

Just installed Linux (Ubuntu 10.10-net book-i386) on an acer 5310 laptop, everything is working great except for the internet. Google home page takes over a minute to load on Firefox, the actual search results takes only a second but then it takes 2 or 3 minutes to load any site i click on. I have broadband, only 1mb, but it worked perfect on the previous OS, also using Firefox.

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Ubuntu :: Unusually High System Load

Jul 2, 2010

i've been using 10.04 since may and it's been good to me thus far. BUT recently, i've been experiencing unusually high system loads. it will happen at random it seems. for instance, it just did it a few minutes ago when i turned on and mounted a external firewire drive. i also had ogmrip open, but NOT running as well as transmission and pidgin. yesterday, i was encoding a rather big movie with ogmrip and around 25%, the system load quickly increased to 10 and held there until i force quit ogmrip. it went back to normal after the force quit.

a previous night, i was installing the popular ubuntu themes via the terminal. at the same time, i was also using ogmrip and the system load shot up during the download/install and held there the rest of the night. sooo...unless it's somehow related to ogmrip i don't know what's going on. it even did it when ogmrip WAS NOT processing any video, just simply open.

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Fedora :: Open An Application When System Starts?

Jul 15, 2010

How to open an application when fedora system starts.

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