Hi, On Sat, 6 Jun 2009 16:49:28 +0300, [email protected] wrote: > On Sat, Jun 06, 2009 at 04:56:53AM +0900, Ryusuke Konishi wrote: > > Hi, > > On Fri, 5 Jun 2009 22:32:56 +0300, [email protected] wrote: > > > Sorry for the late reply . > > > > > > I tried to use deplock but I always get this : > > > SysRq : Show Locks Held > > > INFO: lockdep is turned off. > > > > > > sysrq t works . I hope the attached file will be helpful . > > > > Thanks for the log! > > > > According to you log, the performance problem seems to be caused > > by a wait function in segment constructor of nilfs. > > > > If you have a chance, please try the following coupled patch which > > comes from two patches queued for 2.6.31. The upper half of the patch > > greatly improves read performance, and the lower part may have effect > > on the write performance. > > > > Regards, > > Ryusuke Konishi > > Unfortunately , the patches didn't help . I tried another flash disk. I > tried another archive (.tar.gz this time) and the problem is still > there . > > Is It possible the problem is related to snapshotting ? (the pauses > happen around 7 times in 40 seconds)
I think the pause is related to garbage collection. What will happen if you mount the partition with -i option ? # mount -t nilfs2 -i /dev/xxx /mnt/media This option skips invoking the garbage collector (cleanerd). If it raises throughput, you can adjust by slowing down cleanerd by rewriting /etc/nilfs_cleanerd.conf (a HUP signal must be sent to the cleanerd to reflect the change): # The maximum number of segments to be cleaned at a time. - nsegments_per_clean 2 + nsegments_per_clean 1 # Cleaning interval in seconds - cleaning interval 5 + cleaning interval 10 Thanks, Ryusuke Konishi _______________________________________________ users mailing list [email protected] https://www.nilfs.org/mailman/listinfo/users
