Hi,
I'm trying to get more performance out of my DRBD cluster with gfs2. It seems that our gfs2 implementation is quit slow.
When running the ping_pong test we get no more than a 1000 locks/sec on the disk. ./ping_pong /mnt/backup/test.dat 4 879 locks/sec
The cluster config has been updated with: <dlm plock_ownership="1" plock_rate_limit="0"/> <gfs_controld plock_rate_limit="0"/>
gfs2_tool getargs /mnt/backup statfs_percent 0 data 2 suiddir 0 quota 0 posix_acl 0 upgrade 0 debug 0 localflocks 0 localcaching 0 ignore_local_fs 0 spectator 0 hostdata jid=1:id=2752514:first=0 locktable lockproto
gfs2_tool df -H /mnt/backup: SB lock proto = "lock_dlm" SB lock table = "cybercenter:backup" SB ondisk format = 1801 SB multihost format = 1900 Block size = 4096 Journals = 2 Resource Groups = 7451 Mounted lock proto = "lock_dlm" Mounted lock table = "cybercenter:backup" Mounted host data = "jid=1:id=2752514:first=0" Journal number = 1 Lock module flags = 0 Local flocks = FALSE Local caching = FALSE
Type Total Used Free use% ------------------------------------------------------------------------ data 3T 1T 1T 47% inodes 1T 96M 1T 0%
Hdparm information of the disk: hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 20988 MB in 2.00 seconds = 10512.28 MB/sec Timing buffered disk reads: 74 MB in 3.05 seconds = 24.30 MB/sec
Has someone an idea about increasing the performance of my gfs2 filesystem?
Kind Regards, Leo Arnts