similar to: kjournald tuning

Hello CentOS users, for a Wordpress website I have installed mysql-server-5.1.69-1.el6_4.x86_64 and run /usr/bin/mysql_secure_installation on a CentOS 6.4 machine with mucho RAM (32 GB) and I wonder, what would be the best place for the mysqld parameters descibed at http://dev.mysql.com/doc/refman/5.1/en/server-parameters.html mysqld_safe --key_buffer_size=64M --table_open_cache=256 \

Hello everybody, Could someone please explain to me what is the difference between kjournald and jbd (precisely, what does each of them do?) Thank you, Alina _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com

I have a system on which kjournald becomes blocked in D state quite often. Looking at a core file we have 5 mounted ext3 filesystems: crash> mount VFSMOUNT SUPERBLK TYPE DEVNAME DIRNAME 10037e07b00 10037e4ec00 rootfs rootfs / 10037e07ec0 10037e4e400 proc /proc /proc 10037e07d40 102188abc00 tmpfs

Hi, I've recently installed ext3 on an 800MB RAID5 (software) array. I am running RedHat Linux 7.1 with the Linux kernel 2.4.12-ac3 on a 1GHz Pentium system with 128MB RAM. I am seeing a significant amount of write operation slowdown when running ext3 (and kjournald), as opposed to my old ext2. The problem seems to be associated with the times that kjournald is accessing the disk. At

kernel version 2.6.10-1.771_FC2smp We have had quite a few instances of kjournald pegging cpu and thereby effectively knocking out the system's i/o. What can we do to provide more information so that the cause can be identified and fixed? Thanks Christopher

(Sent to linux-raid, linux-kernel and ext3-users since I'm not sure what type of issue this is) I've got a test system here running Redhat 7.1 + stock 2.4.9 with these patches: http://www.fys.uio.no/~trondmy/src/2.4.9/linux-2.4.9-NFS_ALL.dif http://www.zip.com.au/~akpm/ext3-2.4-0.9.6-249.gz http://domsch.com/linux/aacraid/linux-2.4.9-aacraid-20010816.patch All three patches applied

I have a NFS server with stock 2.4.20 patched with the 5 data=journal patches, plus the 2.4 LSM and NSA's selinux. The partition is mounted with the options: rw,noatime,nosuid,nodev,data=journal,errors=remount-ro The oops seems to happen when the fs is under load. I don't think I encountered this behavior with a non LSM/selinux kernel, so it may have something to do with those, but I

Hello, we have just observed a rather annoying behavior one of our servers. Specifically, when writing data to a file on an ext3fs filesystem at around 1.5 MB/sec, network connectivity suddently started to show signs of lag. The ping would spike up to ~1 second every 5 seconds or so. This affects the server in question and all hosts routing traffic through it (i.e., it's not a userland-only

I'm getting oops whenever I pull a big file off of an ext3 filesystem on my large LV. The kernel this comes from happens to have lvm 1.0.2 and posix ACL for ext2/3 patched in, but I get the crash even on vanilla 2.4.17. kymoops 2.4.3 on i686 2.4.17-acl-lvm. Options used -V (default) -k /proc/ksyms (default) -l /proc/modules (default) -o /lib/modules/2.4.17-acl-lvm/

I've tried to find my answer to this question but I have not (yet). Any assistance or expert knowledge is greatly appreciated! PROBLEM: mounting an ext3 volume 'read only' results in a different md5sum hash value for the volume than when the same volume is *not* mounted SCENARIO: - when I hash unmounted /dev/hda5 using 'md5sum /dev/hda5' I get value XXX. - when I hash

Hi, I've got a Redhat 7.2 system: Celeron 400 512MB RAM 18GB SCSI HD (/boot (ext2fs), / (ext3fs)) 40GB IDE HD (/ (ext3fs)) I run a bunch of services on the box (apache + mod_perl, MYSQL, Samba, etc) but the system is not under heavy load. This system has performance issues reading/writing to the ext3fs filesystems. The performance issues cropped up when I installed Redhat 7.2. Previously

Hi, I am getting the following Oops on 2.6.30.1 kernel. The bad part is, it happens rarely (twice in last 1.5 months) and the system is pretty lightly loaded when this happens (no heavy file/disk io). Any insights or patches that I can try? (i searched lkml and ext3 lists but could not find any similar oops/reports). == Oops =================== BUG: unable to handle kernel NULL pointer

Hi,guys In my server, the process kjournald used much more cpu time. How can I let my system load down? Thanks. Forrest Wang -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://listman.redhat.com/archives/ext3-users/attachments/20070417/67bf3e94/attachment.htm>

Today our mailserver froze after just one day of uptime. I was able to capture the Oops on the screen using my digital camera: http://www.stahl.bau.tu-bs.de/~hildeb/bugreport/ Keywords: EIP is at journal_commit_transaction, process kjournald # mount /dev/cciss/c0d0p6 on / type ext3 (rw,errors=remount-ro) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts

Hello! While performing some zttest's for some time today, I was also keeping an eye of a top of the machine. While the zttest was running, I also had a ssh-keygen and a dd creating a 5GB file on an EXT3 partition running. I noticed that for the most part, I got a decent number of 100%'s, and a bunch of 99.6%'s or higher. However, it seems that whenever the zttest dropped

Hello List, Running 2.4.21-pre3-ac1 SMP with new quotas (usr and grp), this oops showed up while copying a large amount (about 50gigs, only 1.6 made it before the oops). I'm trying to reproduce as we speak. Unable to handle kernel NULL pointer dereference at virtual address 00000004 c0130956 *pde = 00000000 Oops: 0002 CPU: 0 EIP: 0010:[<c0130956>] Not tainted Using defaults

Hi Got a box that acts as a web/db server - recently i have started to see odd timeout errors between the app and webserver on this box - Can't see anything obvious and as far as i'm aware nothing has changed any ideas? 9:27am up 128 days, 21:12, 1 user, load average: 4.05, 3.45, 3.07 Mem: 1027760K av, 1022644K used, 5116K free, 196K shrd, 141620K buff Swap: 2097112K

We run several RH7.2/7.3 servers & recently 2 of them, although still working fine, have started to show kjournald as generally using over 50% cpu% on 'top' - virtually continuously. Free cpu% generally less than 25% now! Both machines are also using software RAID5 EIDE ....... otherwise are standard server installs. Any info on what kjournald is & why it should have recently

All, I am running into a situation in which one of my ext3 filesystems is getting hung during normal usage. There are three ext3 filesystems on a CompactFLASH. One is mounted as / and one as /tmp. In my test, I am copying a 100 MB file from /root to /tmp repeatedly. While doing this test, I eventually see the copying stop, and any attempts to access /tmp fail - if I even do ls /tmp the

Hi, If this is a redundant post I apologize. I am running 2.4.20 on what has been a very stable Athlon machine for months, tried to move a 2 GB file from an ext2 partition to an ext3 and kjournald crashed. Here are the last reminants of my shell scrollback: [*ROOT* mofo /mnt/sda1/mysql/fd 641 ] ll oldmail/ total 2363288 -rw-rw---- 1 mysql mysql 2147483647 Jan 23 18:04 maillog.MYD