Date: Thu, 8 Oct 2009 10:06:27 -0700 From: Artem Belevich <fbsdlist@src.cx> To: Pawel Jakub Dawidek <pjd@freebsd.org> Cc: freebsd-fs@freebsd.org Subject: Re: ARC size constantly shrinks, then ZFS slows down extremely Message-ID: <ed91d4a80910081006u644c94c1x12a65c2718b3a739@mail.gmail.com> In-Reply-To: <20091008160718.GB2134@garage.freebsd.pl> References: <4AC1E540.9070001@fsn.hu> <4AC5B2C7.2000200@fsn.hu> <20091002184526.GA1660@garage.freebsd.pl> <4ACDA5EA.2010600@fsn.hu> <4ACDDED0.2070707@fsn.hu> <20091008160718.GB2134@garage.freebsd.pl>
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I've tested with Kip's patch -- no lockups so far. --Artem On Thu, Oct 8, 2009 at 9:07 AM, Pawel Jakub Dawidek <pjd@freebsd.org> wrote: > On Thu, Oct 08, 2009 at 02:45:04PM +0200, Attila Nagy wrote: >> Attila Nagy wrote: >> >Hello, >> > >> >Pawel Jakub Dawidek wrote: >> >>On Fri, Oct 02, 2009 at 09:59:03AM +0200, Attila Nagy wrote: >> >> >> >>>Backing out this change from the 8-STABLE kernel: >> >>>http://svn.freebsd.org/viewvc/base/head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c?r1=191901&r2=191902 >> >>> >> >>> >> >>>makes it survive about half and hour of IMAP searching. Of course >> >>>only time will tell whether this helps in the long run, but so far >> >>>10/10 tries succeeded to kill the machine with this method... >> >>> >> >> >> >>Could you try this patch: >> >> >> >> http://people.freebsd.org/~pjd/patches/arc.c.4.patch >> >> >> >It seems (after running for two days) that this fixes my problem. And >> >I see that Kip has came out with a similar version (which I couldn't >> >yet test, but hope that will also do). >> It seems that I was a little bit quick regarding this. >> The machine just stopped with this: >> last pid: 32358; load averages: 0.01, 0.04, 0.12 up 2+06:33:56 >> 14:36:25 >> 114 processes: 1 running, 112 sleeping, 1 zombie >> CPU: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 100% idle >> Mem: 536M Active, 63M Inact, 393M Wired, 8K Cache, 111M Buf >> Swap: 4096M Total, 15M Used, 4081M Free >> >> PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND >> 24025 root 1 44 0 3932K 992K vmwait 0 6:06 0.00% zpool >> 84190 root 1 44 0 4700K 1592K CPU1 1 4:17 0.00% top >> 99029 root 1 44 0 4132K 1212K nanslp 1 3:53 0.00% gstat >> 26317 root 1 44 0 1528K 352K piperd 1 3:38 0.00% >> readproctitl >> 49143 125 4 45 0 12248K 3788K sigwai 0 2:50 0.00% >> milter-greyl >> 39969 root 1 44 0 1536K 516K vmwait 0 2:50 0.00% supervise >> 40241 root 1 44 0 1536K 516K vmwait 0 2:47 0.00% supervise >> 44633 root 1 44 0 1536K 512K vmwait 0 2:43 0.00% supervise >> 43434 root 1 44 0 1536K 516K vmwait 0 2:43 0.00% supervise >> 50575 root 1 44 0 1536K 516K vmwait 0 2:42 0.00% supervise >> 45510 root 1 44 0 1536K 512K vmwait 0 2:42 0.00% supervise >> 58146 60 1 44 0 264M 8828K pfault 0 2:32 0.00% imapd >> 47526 389 6 44 0 92688K 2296K ucond 1 1:29 0.00% slapd >> 5417 root 1 44 0 9396K 1680K pfault 1 1:26 0.00% sshd >> 13147 root 1 44 0 3340K 860K vmwait 1 0:45 0.00% syslogd >> 92597 root 1 44 0 9396K 1676K pfault 1 0:39 0.00% sshd >> 26437 125 1 44 0 6924K 1700K vmwait 0 0:33 0.00% qmgr >> >> The above top was refreshing, but every other stuff on different ssh >> consoles (like a running zpool iostat and gstat) was frozen. >> Even top stopped when I have resized the window. > > Please try Kip's patch that was committed, it changes priorities a bit, > which should help. > > -- > Pawel Jakub Dawidek http://www.wheel.pl > pjd@FreeBSD.org http://www.FreeBSD.org > FreeBSD committer Am I Evil? Yes, I Am! >
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