Eugene M. Zheganin
2016-Oct-21 03:52 UTC
zfs, a directory that used to hold lot of files and listing pause
Hi. On 20.10.2016 21:17, Steven Hartland wrote:> Do you have atime enabled for the relevant volume?I do.> > If so disable it and see if that helps: > zfs set atime=off <volume> >Nah, it doesn't help at all. Thanks. Eugene.
Steven Hartland
2016-Oct-21 04:22 UTC
zfs, a directory that used to hold lot of files and listing pause
On 21/10/2016 04:52, Eugene M. Zheganin wrote:> Hi. > > On 20.10.2016 21:17, Steven Hartland wrote: >> Do you have atime enabled for the relevant volume? > I do. >> >> If so disable it and see if that helps: >> zfs set atime=off <volume> >> > Nah, it doesn't help at all.As per with Jonathon what does gstat -pd and top -SHz show?
Peter Jeremy
2016-Oct-21 05:29 UTC
zfs, a directory that used to hold lot of files and listing pause
Have you done any ZFS tuning? Could you try installing ports/sysutils/zfs-stats and posting the output from "zfs-stats -a". That might point to a bottleneck or poor cache tuning. -- Peter Jeremy -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 949 bytes Desc: not available URL: <http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20161021/e7a5c6ee/attachment.sig>
Andriy Gapon
2016-Oct-21 11:34 UTC
zfs, a directory that used to hold lot of files and listing pause
Instead of the guesswork and black magic, you could try to use tools to analyze the problem. E.g., determine if the delay is because a CPU does a lot of work or it is because of waiting. Find the bottleneck, etc. pmcstat, dtrace are your friends :-) -- Andriy Gapon