Date: Wed, 22 Mar 2017 21:10:51 +0100 From: Michael Gmelin <freebsd@grem.de> To: "O. Hartmann" <ohartmann@walstatt.org> Cc: FreeBSD CURRENT <freebsd-current@freebsd.org> Subject: Re: CURRENT: slow like crap! ZFS scrubbing and ports update > 25 min Message-ID: <70346774-2E34-49CA-8B62-497BD346CBC8@grem.de> In-Reply-To: <20170322210225.511da375@thor.intern.walstatt.dynvpn.de> References: <20170322210225.511da375@thor.intern.walstatt.dynvpn.de>
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> On 22 Mar 2017, at 21:02, O. Hartmann <ohartmann@walstatt.org> wrote: >=20 > CURRENT (FreeBSD 12.0-CURRENT #82 r315720: Wed Mar 22 18:49:28 CET 2017 am= d64) is > annoyingly slow! While scrubbing is working on my 12 GB ZFS volume, updati= ng /usr/ports > takes >25 min(!). That is an absolute record now. >=20 > I do an almost daily update of world and ports tree and have periodic scr= ubbing 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 a= bout 4 TB now) > and this is now for ~ 2 years constant.=20 >=20 > I've experienced before that while scrubbing the ZFS volume, some operatio= ns, even the > update of /usr/ports which resides on that ZFS RAIDZ volume, takes a bit l= onger than > usual - but never that long like now! >=20 > Another box is quite unusable while it is scrubbing and it has been usable= times before. > The change is dramatic ... >=20 What do "zpool list", "gstat" and "zpool status" show?
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