Pawel Jakub Dawidek wrote:
On Thu, Jun 05, 2008 at 01:53:37AM +0800, Tz-Huan Huang wrote:
On Thu, Jun 5, 2008 at 12:31 AM, Dag-Erling Sm??rgrav <[EMAIL PROTECTED]> wrote:
"Tz-Huan Huang" <[EMAIL PROTECTED]> 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. :-)
[EMAIL PROTECTED] ~% uname -a
FreeBSD ds4.des.no 8.0-CURRENT FreeBSD 8.0-CURRENT #27: Sat Feb 23 01:24:32 CET
2008 [EMAIL PROTECTED]:/usr/obj/usr/src/sys/ds4 amd64
[EMAIL PROTECTED] ~% 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
[EMAIL PROTECTED] ~% zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
raid 1.45T 435G 1.03T 29% ONLINE -
[EMAIL PROTECTED] ~% 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.
I'm don't think the panics are related to pool size. More to the load
and characteristics of your workload.
[EMAIL PROTECTED] uname -a
FreeBSD cml2.csie.ntu.edu.tw 7.0-STABLE FreeBSD 7.0-STABLE #40: Sat
May 31 10:29:16 CST 2008
[EMAIL PROTECTED]:/usr/local/obj/usr/local/src/sys/CML2 amd64
[EMAIL PROTECTED] 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
[EMAIL PROTECTED] zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
sun 11.3T 9.03T 2.30T 79% ONLINE -
[EMAIL PROTECTED] zfs list | wc -l
295
If we're comparing who has bigger... :)
beast:root:~# zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
tank 732G 604G 128G 82% ONLINE -
but:
beast:root:~# zfs list | wc -l
1932
No panics.
PS. I'm quite sure the ZFS version I've in perforce will fix most if not
all 'kmem_map too small' panics. It's not yet committed, but I do want
to MFC it into RELENG_7.
Any guesstimate as to when the MFC will happen ?
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