Re: CURRENT: slow like crap! ZFS scrubbing and ports update > 25 min

From: Michael Gmelin <freebsd_at_grem.de>
Date: Wed, 22 Mar 2017 21:10:51 +0100
> On 22 Mar 2017, at 21:02, O. Hartmann <ohartmann_at_walstatt.org> wrote:
> 
> CURRENT (FreeBSD 12.0-CURRENT #82 r315720: Wed Mar 22 18:49:28 CET 2017 amd64) is
> annoyingly slow! While scrubbing is working on my 12 GB ZFS volume, updating /usr/ports
> takes >25 min(!). That is an absolute record now.
> 
> I do an almost  daily update of world and ports tree and have periodic scrubbing ZFS
> volumes every 35 days, as it is defined in /etc/defaults. Prts tree hasn't grown much,
> the content of the ZFS volume hasn't changed much (~ 100 GB, its fill is about 4 TB now)
> and this is now for ~ 2 years constant. 
> 
> I've experienced before that while scrubbing the ZFS volume, some operations, even the
> update of /usr/ports which resides on that ZFS RAIDZ volume, takes a bit longer than
> usual - but never that long like now!
> 
> Another box is quite unusable while it is scrubbing and it has been usable times before.
> The change is dramatic ...
> 

What do "zpool list", "gstat" and "zpool status" show?
Received on Wed Mar 22 2017 - 19:11:01 UTC

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