Messages in this thread |  | | Date | Wed, 26 Sep 2001 10:34:24 +0530 | From | Dipankar Sarma <> | Subject | Re: Locking comment on shrink_caches() |
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In article <20010925.132816.52117370.davem@redhat.com> David S. Miller wrote: > From: Rik van Riel <riel@conectiva.com.br> > Date: Tue, 25 Sep 2001 17:24:21 -0300 (BRST) > > Or were you measuring loads which are mostly read-only ?
> When Kanoj Sarcar was back at SGI testing 32 processor Origin > MIPS systems, pagecache_lock was at the top.
John Hawkes from SGI had published some AIM7 numbers that showed pagecache_lock to be a bottleneck above 4 processors. At 32 processors, half the CPU cycles were spent on waiting for pagecache_lock. The thread is at -
http://marc.theaimsgroup.com/?l=lse-tech&m=98459051027582&w=2
Thanks Dipankar -- Dipankar Sarma <dipankar@in.ibm.com> Project: http://lse.sourceforge.net Linux Technology Center, IBM Software Lab, Bangalore, India. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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