We had the same issue with a 24 core box a while ago. Check your l2 cache hits and misses. Sometimes more cores does not mean more performance dtrace is your friend!
On 30 Oct 2010 14:12, "zfs user" <zf...@itsbeen.sent.com> wrote: Here is a total guess - but what if it has to do with zfs processing running on one CPU having to talk to the memory "owned" by a different CPU? I don't know if many people are running fully populated boxes like you are, so maybe it is something people are not seeing due to not having huge amounts of ram on these new multichip transport systems. Maybe you could test it by going to 1 Mangy-Cours CPU and just the memory populated for that one on your AMD box and see if you get the same periodic high loads. On 10/30/10 5:48 AM, Ian D wrote: > > I owe you all an update... > > We found out a clear pattern we can now recreate at will. Whenev... _______________________________________________ zfs-discuss mailing list zfs-disc...@opensolaris.or...
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