Date: Tue, 11 Oct 2011 18:21:25 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Artem Belevich" <art@freebsd.org> Cc: =?iso-8859-1?Q?Micka=EBl_Maillot?= <mickael.maillot@gmail.com>, Christer Solskogen <christer.solskogen@gmail.com>, freebsd-stable@freebsd.org, Ivan Voras <ivoras@freebsd.org>, Jeremy Chadwick <freebsd@jdc.parodius.com> Subject: Re: "High" cpu usage when using ZFS cache device Message-ID: <E8A49AB737A64476892290B5866595C4@multiplay.co.uk> References: <AANLkTinzwyhABYxzWknzRFzLCbcDSd3BU2kQ5tX_SSk-@mail.gmail.com><20101116003029.GC79816@numachi.com><AANLkTinfTgXzf7t3PtO2VAef7NSkKWc0RnGdpv=6_-Vj@mail.gmail.com><ibtqvp$bfq$1@dough.gmane.org><AANLkTi=tJ-Hf%2BrMqG0=tEzNV2jJW-B_7Yu_ftW4tAMqT@mail.gmail.com><20101116125431.GA90475@icarus.home.lan><AANLkTi=mAWYCnWbWbX9B9fa05iyC_pivu08v-%2BbOf75f@mail.gmail.com><AANLkTi=p9U6gK=Z5GyrAEzU2tDqbx%2ByWY=4eTZ5-0CuF@mail.gmail.com><AANLkTi=XwO0RrU9uY5CF5p%2Bb9co1yneXX7UR2JsF55bL@mail.gmail.com><AANLkTiknP4D5aayotFQ1jFpmov9Vv50GnFdVaXXs39rL@mail.gmail.com><AANLkTikjd5CgcC3TEhLYuBXGukP0mUCyHtY-FwfYqs1K@mail.gmail.com><852472071289497FA806928D0B41D0FE@multiplay.co.uk> <CAFqOu6i507j1tksV7xDYXsgUhQfp=JiKSXVnQHqM3ZQWyozG6A@mail.gmail.com>
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----- Original Message -----
From: "Artem Belevich" <art@freebsd.org>
> No, there was no PR.
>
> L2arc CPU hogging after ~24 days was fixed in r218180 in -HEAD and was
> MFC'ed to 8-stable in r218429 early in February '11.
> If you're using 8-RELEASE, upgrading to 8-STABLE would be something to
> consider as there were other ZFS-related issues fixed there that
> didn't make it into -RELEASE.
Thanks for the confirmation there Artem, we currently can't use 8-STABLE
due to the serious routing issue, seem like every packet generates a
RTM_MISS routing packet to be sent, which causes high cpu load.
Thread: "Re: serious packet routing issue causing ntpd high load?"
Regards
Steve
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