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Date: Tue, 25 Sep 2001 14:05:04 -0700
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To: "David S. Miller" <davem@redhat.com>
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Subject: Re: Locking comment on shrink_caches()
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"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.

But when I asked kumon to test it on his 8-way Xeon,
page_cache_lock contention proved to be insignificant.

Seems to only be a NUMA thing.