Date: Thu, 5 Feb 2009 19:49:56 +0200 From: Gleb Kurtsou <gleb.kurtsou@gmail.com> To: Ganbold <ganbold@micom.mng.net> Cc: Rong-en Fan <grafan@gmail.com>, pjd@freebsd.org, FreeBSD Current <freebsd-current@freebsd.org>, Peter Schuller <peter.schuller@infidyne.com> Subject: Re: process hang in zfs->io_ ? Message-ID: <20090205174955.GA1309@tops> In-Reply-To: <4988519E.2070103@micom.mng.net> References: <6eb82e0902010024o4094b3a6q3186f2109029a67a@mail.gmail.com> <20090201105815.GA73985@hyperion.scode.org> <4988519E.2070103@micom.mng.net>
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On (03/02/2009 22:15), Ganbold wrote:
> I've observed similar system hang when I tried to run svn update on
> FreeBSD head repo
> from 2 local directories simultaneously. I might be doing something
> wrong and as
> I remember I reproduced it a couple of times.
>
> It is i386 CURRENT (r187663M) machine and loader.conf settings are:
> vm.kmem_size="1024M"
> vm.kmem_size_max="1024M"
> vfs.zfs.arc_max="100M"
I have no idea why, but vm.kmem_size{,_max}="1024M" slows things down a
lot. I'm running with
vm.kmem_size="999M"
vm.kmem_size_max="999M"
and system seems to be much more responsive.
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