Hi All,
On Wed, Nov 2, 2011 at 5:24 PM, Lachlan Mulcahy <lmulc...@marinsoftware.com>wrote: > Now trying another suggestion sent to me by a direct poster: >> >> * Recommendation from Sun (Oracle) to work around a bug: >> * 6958068 - Nehalem deeper C-states cause erratic scheduling >> behavior >> set idle_cpu_prefer_mwait = 0 >> set idle_cpu_no_deep_c = 1 >> >> Was apparently the cause of a similar symptom for them and we are using >> Nehalem. >> >> At this point I'm running out of options, so it can't hurt to try it. > > > So far the system has been running without any lock ups since very late > Monday evening -- we're now almost 48 hours on. > > So far so good, but it's hard to be certain this is the solution, since I > could never prove it was the root cause. > > For now I'm just continuing to test and build confidence level. More time > will make me more confident. Maybe a week or so.... > We're now over a week running with C-states disabled and have not experienced any further system lock ups. I am feeling much more confident in this system now -- it will probably see at least another week or two in addition to more load/QA testing and then be pushed into production. Will update if I see the issue crop up again, but for anyone else experiencing a similar symptom, I'd highly recommend trying this as a solution. So far it seems to have worked for us. Regards, -- Lachlan Mulcahy Senior DBA, Marin Software Inc. San Francisco, USA AU Mobile: +61 458 448 721 US Mobile: +1 (415) 867 2839 Office : +1 (415) 671 6080
_______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
