Alexander Leidinger <alexan...@leidinger.net> wrote: > On Mon, 28 Feb 2011 19:21:29 +0100 Fabian Keil > <freebsd-lis...@fabiankeil.de> wrote: > > > Pawel Jakub Dawidek <p...@freebsd.org> wrote: > > > > > I just committed ZFSv28 to HEAD. > > > > I updated the system without removing the tuning for ZFSv15 > > first, and somehow this completely messed up the performance. > > Booting the system took more than ten minutes and even once > > it was up it was next to unresponsive. > > > > I'm not sure which sysctl was to blame, but after removing > > all but vfs.zfs.arc_max="800M" and rebooting, the problem > > was gone. > > When you add the tuning back, does it take minutes again to boot? If > not, I assume it was cleaning up some leftovers the old version was not > able to cleanup.
I haven't tried that yet, but as I didn't upgrade the system's storage pool I don't think ZFS is supposed to do any such clean-ups. I also don't see any similar issues when importing other v15 pools. Fabian
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