| Date | Fri, 13 Aug 2010 16:56:32 +0400 | From | Vladislav Bolkhovitin <> | Subject | Re: [PATCH 02/11] block: kill QUEUE_ORDERED_BY_TAG |
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Hello Tejun,
Tejun Heo, on 08/12/2010 04:41 PM wrote: > Nobody is making meaningful use of ORDERED_BY_TAG now and queue > draining for barrier requests will be removed soon which will render > the advantage of tag ordering moot.
Have you seen Hannes Reinecke's and my measurements in http://marc.info/?l=linux-scsi&m=128110662528485&w=2 and http://marc.info/?l=linux-scsi&m=128111995217405&w=2 correspondingly?
If yes, what else evidences do you need to see that the tag ordering is a big performance win?
Vlad
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