Date: Thu, 5 Jun 2008 01:53:37 +0800 From: "Tz-Huan Huang" <tzhuan@csie.org> To: "=?UTF-8?Q?Dag-Erling_Sm=C3=B8rgrav?=" <des@des.no> Cc: freebsd-hackers@freebsd.org, Pawel Jakub Dawidek <pjd@freebsd.org> Subject: Re: Is there any way to increase the KVM? Message-ID: <6a7033710806041053g4a5c2fdftd7202b708bff363c@mail.gmail.com> In-Reply-To: <86zlq140x0.fsf@ds4.des.no> References: <6a7033710805302252v43a7b240x66ca3f5e3dd5fda4@mail.gmail.com> <20080603135308.GC3434@garage.freebsd.pl> <6a7033710806032317g4dbe8845h26a1196016b9c440@mail.gmail.com> <86zlq140x0.fsf@ds4.des.no>
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On Thu, Jun 5, 2008 at 12:31 AM, Dag-Erling Smørgrav <des@des.no> wrote:
> "Tz-Huan Huang" <tzhuan@csie.org> writes:
>> The vfs.zfs.arc_max was set to 512M originally, the machine survived for
>> 4 days and panicked this morning. Now the vfs.zfs.arc_max is set to 64M
>> by Oliver's suggestion, let's see how long it will survive. :-)
>
> des@ds4 ~% uname -a
> FreeBSD ds4.des.no 8.0-CURRENT FreeBSD 8.0-CURRENT #27: Sat Feb 23 01:24:32 CET 2008 des@ds4.des.no:/usr/obj/usr/src/sys/ds4 amd64
> des@ds4 ~% sysctl -h vm.kmem_size_min vm.kmem_size_max vm.kmem_size vfs.zfs.arc_min vfs.zfs.arc_max
> vm.kmem_size_min: 1,073,741,824
> vm.kmem_size_max: 1,073,741,824
> vm.kmem_size: 1,073,741,824
> vfs.zfs.arc_min: 67,108,864
> vfs.zfs.arc_max: 536,870,912
> des@ds4 ~% zpool list
> NAME SIZE USED AVAIL CAP HEALTH ALTROOT
> raid 1.45T 435G 1.03T 29% ONLINE -
> des@ds4 ~% zfs list | wc -l
> 210
>
> Haven't had a single panic in over six months.
Thanks for your information, the major difference is that we
runs on 7-stable and the size of our zfs pool is much bigger.
root@cml2$ uname -a
FreeBSD cml2.csie.ntu.edu.tw 7.0-STABLE FreeBSD 7.0-STABLE #40: Sat
May 31 10:29:16 CST 2008
root@cml2.csie.ntu.edu.tw:/usr/local/obj/usr/local/src/sys/CML2 amd64
root@cml2$ sysctl -h vm.kmem_size_min vm.kmem_size_max vm.kmem_size
vfs.zfs.arc_min vfs.zfs.arc_max
vm.kmem_size_min: 0
vm.kmem_size_max: 1,610,612,736
vm.kmem_size: 1,610,612,736
vfs.zfs.arc_min: 16,777,216
vfs.zfs.arc_max: 67,108,864
root@cml2$ zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
sun 11.3T 9.03T 2.30T 79% ONLINE -
root@cml2$ zfs list | wc -l
295
Thanks,
Tz-Huan
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