On 06/26/2012 11:15 AM, Stefan Priebe wrote:
Am 26.06.2012 11:07, schrieb Stefan Priebe:
Am 26.06.2012 00:11, schrieb Sage Weil:
On Sat, 23 Jun 2012, Stefan Priebe wrote:
Hi,
i got stuck while selecting the right FS for ceph / RBD.
XFS:
- deadlock / hung task under 3.0.34 in xfs_ilock / xfs_buf_lock while
syncfs
There was an ilock fix that went into 3.4, IIRC. Have you tried vanilla
3.4? We are seeing some lockdep noise currently, but no deadlocks yet.
Will test 3.4.4 soon.
With btrfs i have 13-14.000 iops while doing random 4k writes from kvm.
With XFS and 3.4.4 i have 814 ;-( and got a lot of slow request noise in
ceph.log ;-( so 814 iops are not an option to me. Or is there anything
special i've to respect while using XFS.
Greets
Stefan
--
To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Stefan,
If you can, it would be really interesting to see the blktrace results
during these tests for both xfs and btrfs. blktrace is in the ubuntu
repositories and can be run quite easily from the command line during
your test.
Thanks,
Mark
--
To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
