Messages in this thread | | | Date | Thu, 18 Aug 2011 14:03:56 -0700 | From | Andi Kleen <> | Subject | Re: [PATCH 10/11] VFS: Cache request_queue in struct block_device |
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> Is the performance gain because of this one less dereference really > substantial. Yes it is measurable on a large macro benchmark.
The gain is from doing the prefetch early enough, and that needs the additional pointer.
-Andi
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