Messages in this thread | | | Date | Wed, 28 Oct 2009 09:28:54 +0100 | From | Jens Axboe <> | Subject | Re: [patch v4 0/3] aio: implement request batching [more performance numbers] |
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On Tue, Oct 27 2009, Jeff Moyer wrote: > Jens Axboe <jens.axboe@oracle.com> writes: > > >> > Nice numbers! The patch looks good to me from a quick look, if you want > >> > I can throw it into the testing mix tomorrow and see what kind of > >> > improvements I see here. With performance increase of that magnitude, we > >> > should get it in sooner rather than later. > >> > > So here's a pretty basic test. It does random reads from a bunch of > > devices, I tested both 4kb and 64kb block sizes. Queue depth used is 32 > > for both cases, but note that this test uses a thread per device (so the > > queue depth is 32 per device). Results are averaged over 3 runs. > > slat/clat are the submission and completion latencies, they are in > > microseconds here. > [...] > > So pretty close, nothing earth shattering here. What the results above > > do not show is that the 4kb test runs very stable with your patch. > > Mainline fluctuates somewhat in the bandwidth, most likely due to the > > varying depth. > > OK, I don't think this patch set will see further testing without > pulling it into someone's tree. Jens, would you mind putting this into > your for-2.6.33 queue? Let me know if you need me to resend the > patches.
Sure, I'll pull it in. I still have the patches, will ping you if it doesn't apply cleanly.
-- Jens Axboe
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