Messages in this thread |  | | Date | Mon, 26 Nov 2001 13:34:50 -0500 | From | Benjamin LaHaise <> | Subject | Re: [PATCH] Scalable page cache |
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On Mon, Nov 26, 2001 at 09:29:39PM +0100, Ingo Molnar wrote: > this is a misunderstanding of the problem. The reason why the > pagecache_lock is a performance problem is *not* contention, the reason is > *not* the length of chains, or any other reason you listed. The problem is > SMP cacheline invalidation costs, due to using the same cacheline from > multiple CPUs. Thus the spreading out of locking gives good SMP cacheline > usage properties.
Please reply to the rest of the message. Perhaps that item is a misunderstanding, but the rest of it is applicable across the board.
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