Date: Wed, 16 Jan 2013 22:55:18 -0500 From: Eitan Adler <lists@eitanadler.com> To: questions@freebsd.org Subject: Re: absurd I/O perf with ZFS: hangs on zfs->cv) Message-ID: <CAF6rxgkCWC_HopEWqhMKw245itPXKJbn4_DD66NKiD1di8ysWw@mail.gmail.com> In-Reply-To: <CAF6rxgkJr7xrmZkkp0eH_-WzuvdmCBDwPPOZFoqWUZ2jqXqneg@mail.gmail.com> References: <CAF6rxgkJr7xrmZkkp0eH_-WzuvdmCBDwPPOZFoqWUZ2jqXqneg@mail.gmail.com>
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On 15 January 2013 23:57, Eitan Adler <lists@eitanadler.com> wrote: > Hi all. > > > Running FreeBSD 9.1-Release, I am seeing some absurd hangs (10 minutes > or more to open a file) with SIGINFO informing me that the process is > stuck on zio->io_cv. > > Does anyone have any suggestions for what I want to look at to tune > this? This is on a newly bought laptop with large amounts of RAM and > almost nothing else running. It is taking me 45 minutes to make 5 commits to git. Something is wrong here but I have no idea what I should be looking at. Any ideas? -- Eitan Adler
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