similar to: iotop

Hi! i have a problem with iotop : root at alien: ~ # iotop Traceback (most recent call last): File "/usr/bin/iotop", line 16, in ? main() File "/usr/lib/python2.4/site-packages/iotop/ui.py", line 567, in main main_loop() File "/usr/lib/python2.4/site-packages/iotop/ui.py", line 557, in <lambda> main_loop = lambda: run_iotop(options) File

Hi Everyone, My Xen host has 2 X 1TB hard drives in a RAID1 setup. If one DomU starts to dd a 5GB file (A ran it in a loop as a test), access ssh on the other DomU becomes very slow. Is this normal? Many Thanks _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

Hi ! I have a server (Centos 5) that is using a pair of SAS drives to store the data. (Mail server) They are on an adaptec raid controler with a battery backup and write back cache active. >From time to time, I have sever peak io to those data disks (> 400 to 500 iops, > 70 to 100 megs/sec). With iostat, I find that it's almost a write i/o problem. How can I find to which files

Is there a package I can get that will graph system resources such as CPU and disk I/O to an html file or something? Matt

Hello I have read that under Solaris one can use DTrace to get I/O request size distribution on a global scale (also on a per process/pid basis). See for example http://prefetch.net/articles/observeiodtk.html Can anyone?recommend?an alternative to get similar information under CentOS? I looked into dtrace for linux but it seems still work in progress, even putting aside CDDL issues ...

Does anyone know of a front panel SATA switch? I would like to have one drive with 'Windows 7' and another with linux on my PC but do not want them on the same drive. Matt

I want to remove files but only if they are owned by a certain user and group. Basically I have this: find /var/spool/greylist -mmin +363 -exec rm -f {} \; I want to make sure it only deletes files owned by mail. Basically no matter what weird characters are in the file names I want to make sure it does not delete anything outside of /var/spool/greylist. I can add 'sudo -u' to it but

On 06/21/2011 01:15 PM, Jan Stilow wrote: > Hello, > > Nirbheek Chauhan <nirbheek <at> gentoo.org> writes: >> [...] >> >> Every few minutes, (I guess) when applications do fsync (firefox, >> xchat, vim, etc), all applications that use fsync() hang for several >> seconds, and applications that use general IO suffer extreme >> slowdowns.

I updated my backup server this weekend from CentOS 7 to CentOS 8. OS disk is SSD, /dev/md0 are two 4TB WD mechanical drives. No hardware was changed. 1. wiped all drives 2. installed new copy of 8 on system SSD 3. re-created the 4TB mirror /dev/md0 with the same WD mechanical drives 4. created the largest single partition possible on /dev/md0 and formatted it ext4 5. waited several hours for the

Hi Is there a way to nail down the issue of high load on a server basically trying to understand the reason behind high load at a specific time period. I use top command but it does not have history. Nagios reports saying "*[04-25-2012 10:11:00] SERVICE ALERT: dev;LOAD;WARNING;HARD;3;WARNING - load average: 6.88, 6.36, 5.71"* * * Please help me understand. Regards Kaushal

I have dovecot version 2.1.7 and I have quota configured as: ----------------------------------- dict { quota_domain = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } mail_plugins = quota protocol imap { mail_plugins = quota quota imap_quota } plugin { quota = dict:domain:%d:proxy::quota_domain quota_rule = *:storage=1M quota_rule2 = Trash:storage=+100M }

hi, i use libvirt 1.0.2 (-r1 , gentoo linux). when i create a vm with win7 guest, virtio nic, virtio hdd, all is running fine. but when i shutdown the windows guest, it takes somestimes 20-34 minutes !!! iotop shows me in the whole time writing with 2,xxmb/sec. is the complete machine "rewritten" to disk? i use disk.images on a raid6, but hey, dd shows me it can writes there with

Hey, I''ve a 2x4TB RAID1 setup with btrfs on kernel 3.8.0. Under high I/O load (BackupPC dump or writing a large file over gigabit) I get messages in syslog such as the one mentioned in the subject. The full non-logcheck-ignored log is under [1]. A BackupPC dump between the same exact machines onto a 2TB ext4 volume take 90 minutes on average, the process on the btrfs volume took 465

Hello, I''m a newby to dtrace and have just installed the dtrace toolkit v0.92 on a core soalris 10 1/06 installation on SUN v40z. I have tried the following commands: iotop iosnoop but I get the message dtrace: invalid probe specifier and a lot of code. At the end it says: : in action list: failed to resolve uid: Unknown variable name Could it be, that there are some

Hi, I'm running dovecot 2.2.x and I'm having an issue where I see many dovecot processes use all the available IO on a server. According to iotop the worst offenders seem to be in this state (NOTE: I swapped in phony username & IP info): dovecot/imap [someusername 123.456.789.012 UID SEARCH] The server in question is running with Maildirs on top of an XFS filesystem. Is there

[Cross-posting to ldoms-discuss] We are occasionally seeing massive time-to-completions for I/O requests on ZFS file systems on a Sun T5220 attached to a Sun StorageTek 2540 and a Sun J4200, and using a SSD drive as a ZIL device. Primary access to this system is via NFS, and with NFS COMMITs blocking until the request has been sent to disk, performance has been deplorable. The NFS server is a

Any word on approximate release date of Centos 6? Cheers, JD

Hi All. I've updated my system from 6.3 to 6.4. In my /etc/yum.repos.depel.repo I have: [epel] name=Extra Packages for Enterprise Linux - $basearch #baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch mirrorlist= http://mirrors.fedoraproject.org/mirrorlist?repo=epel-6&arch=$basearch failovermethod=priority gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

hi Ingo, please consider pulling thanks, jirka The following changes since commit 3617660e4e1618a888a2e3a4067224534302cb33: Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/core (2014-05-01 08:24:59 +0200) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git

hi Ingo, please consider pulling thanks, jirka The following changes since commit 3617660e4e1618a888a2e3a4067224534302cb33: Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/core (2014-05-01 08:24:59 +0200) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git