Dear All, I've setup a courier-imap server which store the email data in Maildir format. The mailbox are saved under a LUN in ISCSI SAN. For handling a mailbox with 10000 email, it takes 6-8 seconds for waiting response from first "SELECT" command. The response time is also unstable too, sometimes it takes 10-20 seconds for the same mailbox. Based some online material, i've tried to tune the gfs. But there are seems no improvement. e.g. gfs_tool setflag inherit_jdata /home/domains gfs_tool settune /home/domains recoverd_secs 60 gfs_tool settune /home/domains glock_purge 50 gfs_tool settune /home/domains demote_secs 100 gfs_tool settune /home/domains scand_secs 3 gfs_tool settune /home/domains max_readahead 262144 gfs_tool settune /home/domains statfs_fast 1 I've tested the mailbox under ext3 and gfs2, both under the LUN in the same SAN. The response time can be within 1 second. Has anyone tried to provide imap service in GFS? or I need to go for GFS2? Is GFS2 still unstable for production system? Regards, Achievement Chan -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
