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Date: Sun, 24 Aug 2014 19:41:57 +0300 From: Sagi Grimberg <sagig@....mellanox.co.il> To: Christoph Hellwig <hch@...radead.org> CC: James Bottomley <James.Bottomley@...senPartnership.com>, Jens Axboe <axboe@...nel.dk>, Bart Van Assche <bvanassche@...ionio.com>, Robert Elliott <Elliott@...com>, linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org, viro@...IV.linux.org.uk, Or Gerlitz <ogerlitz@...lanox.com>, Oren Duer <oren@...lanox.com>, "Nicholas A. Bellinger" <nab@...ux-iscsi.org>, Mike Christie <michaelc@...wisc.edu>, linux-fsdevel@...r.kernel.org, Max Gurtovoy <maxg@...lanox.com> Subject: Re: Performance degradation in IO writes vs. reads (was scsi-mq V2) On 8/21/2014 5:02 PM, Sagi Grimberg wrote: > On 8/21/2014 4:03 PM, Christoph Hellwig wrote: >> On Thu, Aug 21, 2014 at 03:32:09PM +0300, Sagi Grimberg wrote: >>> So I just got back to checking this issue of *extremely low* IO write >>> performance I got in 3.16-rc2. >> >> Please test with 3.16 final. There once issue each in aio and dio >> that caused bad I/O performance regression that were only fixed last >> minute in the 3.16 cycle. >> > > I'll do that now. > Indeed this issue is resolved in 3.16. Sorry for the false alarm... Thanks Christoph. Sagi. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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