That should be "-o relatime" and "-o noatime", respectively =)
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Alan A Sent: dinsdag 16 maart 2010 21:01 To: linux clustering Subject: Re: [Linux-cluster] GFS Tuning - it's just slow,to slow for production I rebuild the share as GFS2, and mounted GFS2 instead of GFS. In /etc/fstab I am mounting with: /dev/mapper/vg_acct10-lv_acct10 /acct10 gfs2 defaults 1 2 I tried mounting: /dev/mapper/vg_acct10-lv_acct10 /acct10 gfs2 -o reltime 1 2 and /dev/mapper/vg_acct10-lv_acct10 /acct10 gfs2 -o notime 1 2 It complained about /etc/fstab not having valid arguments. I also got very different parameters with gfs2_tool gettune /mountpoint then what I saw in gfs: [r...@fenclxmrcati11 bin]# gfs2_tool gettune /acct10 new_files_directio = 0 new_files_jdata = 0 quota_scale = 1.0000 (1, 1) logd_secs = 1 recoverd_secs = 60 statfs_quantum = 30 stall_secs = 600 quota_cache_secs = 300 quota_simul_sync = 64 statfs_slow = 0 complain_secs = 10 max_readahead = 262144 quota_quantum = 60 quota_warn_period = 10 jindex_refresh_secs = 60 log_flush_secs = 60 incore_log_blocks = 1024 My question - how do I mount the volume via /etc/fstab with -o noatime or -o reltime? For quota management - Documentation suggests mounting with mount -o quota=account options, is this necessary if I set the quotas with gfs2_quota command? On Thu, Mar 4, 2010 at 11:25 AM, Gordan Bobic <[email protected]> wrote: Are you concurrently accessing same directories from multiple nodes? If so, re-arrange the access pattern so each node is accessing independent subtrees. Otherwise you'll have massive lock churn and very poor latencies. Gordan "Alan A" <[email protected]> wrote: >We are trying to deploy GFS in production, and are experiencing major >performance issues. What parameters in GFS settune can be changed to >increase I/O, to better tune performance? Application we run utilizes a lot >of I/O, please advise. > >We experience OK performance when starting, but as things ramp up and we get >few processes going GFS slows dramatically. > >-- >Alan A. >-- >Linux-cluster mailing list >[email protected] >https://www.redhat.com/mailman/listinfo/linux-cluster -- Sent from my Android phone with K-9 Mail. Please excuse my brevity. -- Linux-cluster mailing list [email protected] https://www.redhat.com/mailman/listinfo/linux-cluster -- Alan A. No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.790 / Virus Database: 271.1.1/2750 - Release Date: 03/16/10 08:33:00
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