I just installed CentOS 5.4 on a brand new DL160 G6. In order to get the data raided I decided to go with mdraid. But I see quite harsh performance hits, I have no GUI or anything and just the basic server installation, and even the console feels sluggish.
The output from getinfo.sh disk:
==================== BEGIN uname -rmi ====================
2.6.18-164.15.1.el5 x86_64 x86_64
==================== END uname -rmi ====================
ok, we had to move one of our databases due to failing hardware. This box is newer than the old but it's just dog slow. 1st I thought it was mysql but now I am realizing it's the network. As a test, I tried copying a remote file to that box and the old server (located at the same co-lo, same provider), same switch, etc.Here are the results;
Old server: access_log.1 100% 4192KB 1.4MB/s 00:03
New Server: access_log.1 100% 4192KB 72.3KB/s 00:58
So now I see why people were complaining about webpage load times, etc. I can't figure out why the network latency. I looked around a bit, see below for some things, I thought mtu, nic speed, etc.
mii-tool shows; eth0: 100 Mbit, full duplex, link ok eth1: 100 Mbit, full duplex, link ok[code].....
Are there other things I can type to test or provide more feedback somehow to get more information.
I've just removed fedora 10 and installed CentOS 5.4 both x86_56 on my Lenovo ThinkCentre 9091-CTO workstation, and observed serious performance degradation while intensive I/O operations and huge load without significant CPU consumption in user mode with about 50% in I/o wait.For example if I do the "tar xjvf some_large_tar.bz" file and run vmstat i get the output below. This is the only cpu and io intensive process running. The load gets up to 6 on C2D CPU and the machine has unacceptable responsivness.
[root@f00 ~]# vmstat 5 10 procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st
I installed on a Intel SR2612UR Server with integrated LSI Expander and a Adaptec 5805Z controller a Raid 6 Array with 12x 2TB Drives (2 ext4 Partition: 16TB, 2TB), but I get very poor read speed depending on the blocksize that I set it vary between 130 MB/s and maximally 170 MB/s which is really poor for a Raid 6 Array of 12 drives, on a similar Dell Server I get above 650 MB/s. The Adaptec Controller has the latest Firmware installed.
i'm trying to run ubuntu 8.10 intrepid ibex on an old hand-me-down laptop that i got from a family member, and i've noticed that the performance is actually much worse than it was on windows xp professional (32-bit).
first of all let me give you my specs: ibm thinkpad r32 intel mobile pentium 4-m 2.0 ghz ati radeon mobility m6 (i think this is actually the mobility radeon 7000 igp) with 16mb ram 256 mb ram (pc-2100)
i understand that these are very low performance specs, but it feels like the computer is running very sluggishly even for those specs. the computer ran just fine in windows xp, but is extremely sluggish in ubuntu. it seems like it detected all the hardware just fine, but i feel like it may not be utilizing the cpu and/or video to the extent that it should be. a couple of places where it really seems to struggle is when first opening new programs, viewing flash intensive web 2.0 type webpages (i.e. videos), and listening to music/podcasts (with rhythmbox).
it seems like rhythmbox really kills my performance more than anything else, but the performance is poor all around compared to xp, and i feel like that shouldn't be the case. like i said, i understand that the specs are poor, but it feels like it's not even living up to those specs. i know that 8.10 is old and outdated now, but it's what i had laying around and i figured that it might perform better on this old deprecated laptop than 9.10 would anyway. am i wrong in this assumption? would 9.10 perform better for me?
I am running karmic and have wireless performance which is terrible on the EEE 1000HA I see it as low as 1mbit at times and others at 24mbit and briefly at 48 and 54mbits. running an Internet speed test with wireless I get pathetic speeds as low as 15Kbps, Its 5 feet from the wireless router ... and other machines that are wireless in the same area show 54mbits and perform great ... any one solve this problem with the asus EEE1000HA running on karmic?
I just installed Ubuntu 10.04 on a laptop that was given to me. It is having a lot of lag issues,especially when playing videos and visiting websites using flash. It's an Intel Pentium 4 2.4GHz machine. I think that it should perform better because I had used and AMD Sempron 2.0GHz machine with Ubuntu before and video playback was much better than this. I'm thinking that my problem is the graphics card driver. Here is the card that this machine has:
Code: :~$ lspci | grep Radeon 01:05.0 VGA compatible controller: ATI Technologies Inc Radeon IGP 330M/340M/350M The AMD machine was using a VIA graphics chipset.
I used the command "Xorg -configure" to create a xorg.conf file, hoping that might help. But it didn't. Here it is:
Is there any tweaking that I can do in the xorg.conf that might help? I don't know which of those options I should set. I also tried changing the driver to "ati" but that did nothing. found some info for settings with "man radeon", I'm going to try some of those out.
I have an ATI RADEON 7000 (taken from lspci) 64 MB graphics card. My computer has a 700 MHz Celeron CPU and 650 MB RAM with Ubuntu 10.04. Anything graphical is slow. I cannot even play basic games like SuperTux. I think it is a graphics driver problem. Will this card ever work well with Linux, what do I need to do?
I have soft raid (mdraid) setup on Centos 5.3 i386. After loosing disk0 source disk, I can't boot anymore. Only thing I got is .... GRUB hard disk error .... Tried to put disk1 into disk0 place, but got same error. Where to look?
I experience very poor desktop performance on my system. General clicking responsiveness is poor, taking over second or two to focus to a new window, move windows around, ... etc. The Xorg process constantly uses over 60% of the CPU even when I'm doing nothing, and when I do click around it will quickly go up near 100% usage. Performance is initially OK when I first launch into my Gnome environment, but it soon deteriorates within 30 minutes or so. Eventually, after days of being up and running, my desktop will crash.I am running Ubuntu 10.10 with latest upgrades. I have four monitors attached to my "nVidia Corporation G98 [Quadro NVS 420]" graphics card. I am running the "NVIDIA accelerated graphics driver (version current)" recommended in the Ubuntu "Additional Drivers" app. I get a fair number (hundreds) of these in my /var/log/Xorg.0.log:
though they don't appear constantly while my desktop is running (I assume they may come in batches?). Not sure if they're relevant. A separate issue, though possibly related, is the SpeedCrunch app (a desktop calculator) is guaranteed to crash my desktop as soon as it gets focus. Here's the relevant output of "lspci -v" which shows my graphics card:
03:00.0 PCI bridge: nVidia Corporation NF200 PCIe 2.0 switch for Quadro Plex S4 / Tesla S870 / Tesla S1070 / Tesla S2050 (rev a3) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=03, secondary=04, subordinate=06, sec-latency=0
I have successfully installed CentOS 5.4, and after choosing it from the GRUB menu, I am getting the following error message:1706-Smart Array Controller Extended BIOS Data Area Memory Corrupted. Int 13h BIOS Cannot Continue - System Halted.I'm using two SAS disks that came along with the server, left the default RAID configuration (1+0) on a P410 controller
So for the last, oh, three or four hours now, I've been trying to get videos to play properly in Ubuntu. I have the default player, I have vlc, I (apparently) installed mplayer, but it won't play anything at all.
I was having horrible screen tearing with standard definition .avi's in vlc, fixed that by setting vsync in catalyst control center to always on or whatever it is.
Now, I have tried to run a 720p x264 video. It PLAYS, but not well. Audio is fine, however video is all jerky in VLC, and in Totem it's just a mess of screen tearing (although the video does no jerk on that player).
I have just spent HOURS trying to get VIDEOS TO PLAY. This makes no sense. Playing a video should be the simplest thing in the world for any OS to do, but with Ubuntu it is like pulling teeth. I have NEVER been so frustrated while using a computer. What is going on here?
BTW, I installed every single thing needed to use mplayer but it still does not work. The player comes up but will not play any type of file.
My system specs: 2.2Ghz dual core (intel) 3gb ram 1GB radeon hd 4650 vid card asus ipibl-lb mobo
I was really enjoying Ubuntu until I got around to trying to watch some videos. Now I am maybe minutes away from going back to vista. At least on there I can watch full 1080p videos if I want with no problems.
I am running kubuntu 9.10 on a dell inspiron 14 with an intel GM45 graphics card. When I run 3d games like Nexuiz, openarena and tremulous I get really random performance. Sometimes things are totally playable with somewhere between 50-80 fps and other times I get maybe 4 fps and everything takes forever to load. These effects persists between logouts, X restarts and reboots! I get no errors when I run things in console either.I never really play games much but when something doesn't work...
iwconfig shows that the bit rate is 130Mb/s and link quality is 98/100. I'm using the wcid network manager instead of defaul gnome one. I'm getting lots of packet loss and performance is very bad. The connection is practically unusable. I've tried installing the compat wireless backport package but that did not work at all.
I have an ATI Radeon x1300 graphic card on an Intel platform.Since the last reinstall my Debian Squeeze system shows very poor performance in glxgears,only 80-90 FPS. Last time I had a problem the kms setting in the kernel. I disabled the modding setting in GRUB and then glxgears showed about 900-1300 FPS. Now,the problem is back, even though I made the same setting in the boot loader.
im the newbie in this area.can anyone tell me how to install centos 5.4 in this hp proliant dl160 server.what I need to do to handle this RAID thing? because it show me not detected any logical hard drive in RAID configuration utility.
i had recently loaded squeeze and had an issue with the 2d performance.i.e when being prompted for the root password, the shading slowly draws down the screen several times before stopping at the final darker shade. i then added the linux-firmware-nonfree package. all worked extremely well, even compiz, but i don't really care about compiz. i just loaded it to see how it performed. i then distro-hopped a bit and when i came back to squeeze the first thing i did was add the package, but the video is acting like i haven't added the package. i've searched for an answer, but have not found anything recent to indicate if xorg was upgraded or what.stable lenny works fine, but i'd rather have the nice console fonts when not in x and more up to date apps like gimp and xsane in squeeze.
This is a thread I've moved over from the install forum and is hopefully more focused. Sorry if I have violated some protocol. Problem I have a new machine build configured to dual-boot Windows 7 and OPENSUSE 11.4. Network performance in Windows is very good but network performance in OPENSUSE is very poor.
I forgot to name some of my arrays and now I can't find a way to set it. I thought I could do it with 'mdadm --assemble --update=name' but it doesn't seem to do any such thing. If I try and append a new name (e.g. =name:NAME or =name=NAME or =name NAME) I get an error message saying it's invalid and it doesn't prompt me if I don't either.Can I set/change that name in any proper way? Do I use the above command? How, if so?Or can I manually edit the superblock in any way? (I know I could name them by recreating them, but I've been creating and recreating arrays for the last two days and I've just had enough, so that's not going to happen.)
I am about to install ubuntu 10.04 to our DL160 g6 servers with p410 raid card. From the ubuntu validated hardware list, I can see that this hardware is validated to only 9.04. : [URL]..Nearly all other models are validated to 10.04. Have anyone tried using dl160 g6 with 10.04? What kind of problems we might face while trying?
I am running mandriva 2010.0 Kernel 188.8.131.52-server-1mnb for my web, mail, dns and ftp server. the problem is i couldn't run webmin on that server because of Mandriva can not detecting the graphic adapter
The server is HP Proliant DL160 G6, and the graphic adapter is ATI ES1000. i need the driver
I'm experiencing slow disk speeds on my server. Since I'm not too experienced in that area, I searched the forums and found a similar thread: Very slow SATA on Centos 5.5 Based on that thread I ran hdparm on all of my disks, with the following results:
In Short: I want something that will show me which files and associated requested URLs are causing the highest load on our web server.
Verbose: We already monitor our Apache web server using Cacti, Nagios, and of course traditional nix commands, but I am looking for something specifically to take an Apache process ID and tie that to a users request for a specific file and URL. The great thing about something like this is that it would be able to show me the worse performing PHP files. Special bonus if it can store this data over time for reports.
I have been googling around for something like this but can't seem to find it. Bonus if it exists in Cacti or Nagios already and I'm just to blind. I started writing my own PERL script to do this, but have limited time to devote to this at work so if a solution already exists I'm game, else I'll just have to write it myself. I'm also worried about my own scripted solution in that it won't get it write because it will be leveraging the output of a specialzed apache log that records the PID and then doing a look up with ps aux looking for that PID.
Quote: At times on our server, during more-or-less idle moments, context switching is around the 2000-3000 mark.When we run the app, we can get this up to the 500,000 CSs per second. Not only this, but at the same time, the CPUs go to >60% system (the kernel is having to do all that context switching after all), leaving only around 30% for user space. We think it is a possibility that the massive context switching is contributing significantly to our performance issues.
The server is a HP DL580 G5 with 4 x Intel Xeon E7340 @ 2.4Ghz.My issue is that I don't know if the contect switching is a problem or not.From what i've read those values are not necesserilly cause for concern.
I just wanted to know if having my laptop set to ondemand, will this affect performance in any way? I realize it increases the clock speed to performance when the CPU is under load, but does the time it take to go from ondemand to performance affect speed? Will there be any noticeable difference between the two setups? I have a dual core intel at 2.2GHz when in performance. When ondemand is set with no load it downclocks to 800Mhz.
I am experiencing disk write performance issues and I cannot find the cause. I have LSI-9211-8i SAS 2 controller (latest firmware), Centos 5.5 latest x86_64 kernel (2.6.18-194.17.4.el5 #1 SMP with latest LSI driver v. 7.00 datet Jul 27) and Seagate Cheetah ST3600057SS drives. These drives have a std write performance (sustained) of > 200MB/s (and read as well); with Fedora core 13 (same machine), issuing a dd if=/dev/zero of=/dev/sdo bs=1024k count=16384 (16 GB direct device write), gets normally to 213 MB/s (repeated retries). On Centos 5.5 I am getting speeds around 110/113 MB/s. iostat does not show anything specific (just 1.3 % wait, CPU 99.7 idle). There are 14 drives: tried with several of them, same figures. Reads go around 200 MB/s.
Last I upgraded one of our cent 5 boxes which is running kvm with a mix of centos and windows VMs.After the update performance just tanked on the XP guest, but the others (including other windows VMs) are just fine.I checked with our good friend google and didn't really get any help there.We're hoping to NOT have to rebuild the XP guest, so I thought I'd check in here first.