On 18/04/10 03:04 AM, Frank Middleton wrote:
On 04/17/10 10:01 AM, James C.McPherson wrote:
There are a bunch of fixes (performance, mostly) that went
into mpt(7d) after snv_125 closed. There have also been a
bunch of changes in the fast reboot area since snv_125.
Great! Is there anything specific to 6894775, though? It seems
like performance improvements might make things worse because
they could increase the load on the disks and the controller, and I
suspect that the true culprit from what I've read here is likely
the controller. Would the reboot changes make it likely that a
reboot after 6894775 would actually work rather than just hang?
You are doing yourself a disservice by not running a newer build.
Indeed. But we SPARC orphans have had a variety of problems
that have taken until b134 to resolve (not that I'm complaining;
the support on these lists has been nothing short of incredible),
so moving forward from b125 hasn't been an option until recently.
We'll do some stress testing on a b134 test system and report back
here if anything interesting results. From your perspective, what
settings of zfs:zfs_vdev_max_pending and zfs_scrub_limit would
be best to provide meaningful results?
Frankly, I'd much prefer that you log a support call against
this CR and get it escalated.
I don't have suggestions about the zfs tuning you mention, sorry.
James C. McPherson
--
Senior Software Engineer, Solaris
Oracle
http://www.jmcp.homeunix.com/blog
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