Date: Fri, 18 Jan 2013 11:33:40 -0600 From: Adam Vande More <amvandemore@gmail.com> To: Eitan Adler <lists@eitanadler.com> Cc: questions@freebsd.org Subject: Re: absurd I/O perf with ZFS: hangs on zfs->cv) Message-ID: <CA%2BtpaK3YqQv8UKrACi3%2BLcyY5Lg08zVzO72SdgCkHqTCZpXW3Q@mail.gmail.com> In-Reply-To: <CAF6rxgkJr7xrmZkkp0eH_-WzuvdmCBDwPPOZFoqWUZ2jqXqneg@mail.gmail.com> References: <CAF6rxgkJr7xrmZkkp0eH_-WzuvdmCBDwPPOZFoqWUZ2jqXqneg@mail.gmail.com>
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On Tue, Jan 15, 2013 at 10:57 PM, 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? > https://wiki.freebsd.org/ZFSTuningGuide Even has a section on laptop settings. Also the ZFS Evil Tuning Guide -- Adam Vande More
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