Date: Wed, 16 Jan 2013 07:01:10 -0600 From: Mark Felder <feld@feld.me> To: Andriy Gapon <avg@freebsd.org>, Nicolas Rachinsky <fbsd-mas-0@ml.turing-complete.org> Cc: freebsd-fs@freebsd.org Subject: Re: slowdown of zfs (tx->tx) Message-ID: <op.wqz8nxyt34t2sn@markf.office.supranet.net> In-Reply-To: <20130116095009.GA36867@mid.pc5.i.0x5.de> References: <CAFqOu6gWpMsWN0pTBiv10WfwyGWMfO9GzMLWTtcVxHixr-_i3Q@mail.gmail.com> <20130114094010.GA75529@mid.pc5.i.0x5.de> <CAFqOu6hxfGt_M6Jo9qWeifDz9YnNc_Bd9H-GEe4RYtutaPvH5w@mail.gmail.com> <20130114195148.GA20540@mid.pc5.i.0x5.de> <CAFqOu6jwJ4qhbOovN_NhzusdQJvrbvUC3g93sziR=Uw99SGenw@mail.gmail.com> <20130114214652.GA76779@mid.pc5.i.0x5.de> <CAFqOu6jKX-Ks6C1RK5GwZ51ZVUSnGSe7S99_EfK%2BfwLPjAFFYw@mail.gmail.com> <20130115224556.GA41774@mid.pc5.i.0x5.de> <CAFqOu6jJnWdbikPmE1-UML5i_x7meF%2BiyY=9WBRyv2j7AeOaSg@mail.gmail.com> <50F67551.5020704@FreeBSD.org> <20130116095009.GA36867@mid.pc5.i.0x5.de>
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On Wed, 16 Jan 2013 03:50:09 -0600, Nicolas Rachinsky <fbsd-mas-0@ml.turing-complete.org> wrote: > * Andriy Gapon <avg@FreeBSD.org> [2013-01-16 11:39 +0200]: >> on 16/01/2013 02:16 Artem Belevich said the following: >> > It appears that lots of threads are stuck in >> > metaslab_activate->space_map_load_wait path. >> >> another thing to check - is your pool nearly full. > > Don't think so: > NAME USED AVAIL REFER MOUNTPOINT > pool1 5.52T 697G 11.9M /pool1 > Never let your ZFS pool go above 80% or you'll have very, very poor performance.
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