Messages in this thread | | | Date | Mon, 04 Aug 2008 19:25:54 +1000 | From | Greg Banks <> | Subject | Re: high latency NFS |
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Bernd Schubert wrote: > On Monday 04 August 2008 03:11:58 J. Bruce Fields wrote: > >> OK, so to summarize: when the rate of incoming rpc's is very high (and, >> I guess, when we're serving everything out of cache and don't have IO >> wait), all the nfsd threads will stay runable all the time. That keeps >> userspace processes from running (possibly for "minutes"). And that's a >> problem even on a server dedicated only to nfs, since it affects portmap >> and rpc.mountd. >> > > Even worse, it affects user space HA software such as heartbeat and everyone > with reasonable timeouts will see spurious 'failures'. > We're seeing that problem right now, even with the patch.
-- Greg Banks, P.Engineer, SGI Australian Software Group. The cake is *not* a lie. I don't speak for SGI.
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