Date: Thu, 21 Jul 2011 21:34:33 +0200 From: Ivan Voras <ivoras@freebsd.org> To: David P Discher <dpd@bitgravity.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS and large directories - caveat report Message-ID: <CAF-QHFWsz3F=UHWzkqUyW5v=2PgbzkRL3CR_b49vRBWKzwWfhA@mail.gmail.com> In-Reply-To: <E3F8D6EC-2CCA-49A2-9BFD-982BF01A3531@bitgravity.com> References: <j09hk8$svj$1@dough.gmane.org> <13577F3E-DE59-44F4-98F7-9587E26499B8@gmail.com> <CAF-QHFUs7OAAwcFvSymc3YYX3Cdq%2BQUUSP_4OFXCegCbzLkOUA@mail.gmail.com> <E3F8D6EC-2CCA-49A2-9BFD-982BF01A3531@bitgravity.com>
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On 21 July 2011 20:48, David P Discher <dpd@bitgravity.com> wrote:
>
> Ivan -
>
> What's your uptime ?
Currently about a day since other people rebooted the server in panic.
> Are you using l2 arc ?
As a separate device? No.
> what is the value of 'sysctl kstat.zfs.misc.arcstats.evict_skip' ?
> is this increasing quickly ?
www:~> sysctl kstat.zfs.misc.arcstats.evict_skip
kstat.zfs.misc.arcstats.evict_skip: 4442021
www:~> sysctl kstat.zfs.misc.arcstats.evict_skip
kstat.zfs.misc.arcstats.evict_skip: 4442410
It increases (like the two values I've given) about every 5 seconds,
which would mean approx. 70 per second.
> How much cpu are the 'arc_reclaim_thread' and 'l2arc_feed_thread' taking up ?
> top -SHb 500 | grep arc
Almost none.
36 root -8 - 0K 80K arc_re 0 0:41 0.00%
{arc_reclaim_thre}
36 root -8 - 0K 80K l2arc_ 0 0:01 0.00%
{l2arc_feed_threa}
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