Messages in this thread | | | Date | Fri, 15 Aug 2014 22:32:43 +0800 | Subject | Re: [PATCH v1 0/9] block & aio: kernel aio and loop mq conversion | From | Ming Lei <> |
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On 8/15/14, Christoph Hellwig <hch@infradead.org> wrote: > On Fri, Aug 15, 2014 at 08:59:56PM +0800, Ming Lei wrote: >> Your concern is right, previous I thought that mq conversion wouldn't >> improve >> throughput, but I did ignore workqueue's concurrency management, it >> turns out blk-mq conversion can improvment throughput close to 10 times >> in >> my test(loop over virtio-blk which is backed by one image on SSD). It is >> like >> POSIX style AIO after mq conversion thanks to workqueue, and I need to >> update the performance data in V2. >> >> Actually kernel AIO needn't such high concurrency. > > Can you juse send a loop blk-mq conversion for now? I think that's
OK.
> a bit less controversial than the new kernel aio APIs, and keeping the > two separate is a good idea in general.
Exactly, the two should be perfect pair for loop block, IMO.
Thanks, -- Ming Lei
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