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Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <74f6fb34-c4c2-6a7e-3614-78c34246c6bd@gmail.com> References: <74f6fb34-c4c2-6a7e-3614-78c34246c6bd@gmail.com> <20201123080506.GA30578@infradead.org> <160596800145.154728.7192318545120181269.stgit@warthog.procyon.org.uk> <160596801020.154728.15935034745159191564.stgit@warthog.procyon.org.uk> <516984.1606127474@warthog.procyon.org.uk> To: Pavel Begunkov Cc: dhowells@redhat.com, Christoph Hellwig , Matthew Wilcox , Jens Axboe , Alexander Viro , Linus Torvalds , linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 01/29] iov_iter: Switch to using a table of operations MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <1155890.1606222222.1@warthog.procyon.org.uk> Date: Tue, 24 Nov 2020 12:50:22 +0000 Message-ID: <1155891.1606222222@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Pavel Begunkov wrote: > fio is relatively heavy, I'd suggest to try fio/t/io_uring with nullblk no patches: IOPS=885152, IOS/call=25/25, inflight=64 (64) IOPS=890400, IOS/call=25/25, inflight=32 (32) IOPS=890656, IOS/call=25/25, inflight=64 (64) IOPS=896096, IOS/call=25/25, inflight=96 (96) IOPS=876256, IOS/call=25/25, inflight=128 (128) IOPS=905056, IOS/call=25/25, inflight=128 (128) IOPS=882912, IOS/call=25/25, inflight=96 (96) IOPS=887392, IOS/call=25/25, inflight=64 (32) IOPS=897152, IOS/call=25/25, inflight=128 (128) IOPS=871392, IOS/call=25/25, inflight=32 (32) IOPS=865088, IOS/call=25/25, inflight=96 (96) IOPS=880032, IOS/call=25/25, inflight=32 (32) IOPS=905376, IOS/call=25/25, inflight=96 (96) IOPS=898016, IOS/call=25/25, inflight=128 (128) IOPS=885792, IOS/call=25/25, inflight=64 (64) IOPS=897632, IOS/call=25/25, inflight=96 (96) first patch only: IOPS=876640, IOS/call=25/25, inflight=64 (64) IOPS=878208, IOS/call=25/25, inflight=64 (64) IOPS=884000, IOS/call=25/25, inflight=64 (64) IOPS=900864, IOS/call=25/25, inflight=64 (64) IOPS=878496, IOS/call=25/25, inflight=64 (64) IOPS=870944, IOS/call=25/25, inflight=32 (32) IOPS=900672, IOS/call=25/25, inflight=32 (32) IOPS=882368, IOS/call=25/25, inflight=128 (128) IOPS=877120, IOS/call=25/25, inflight=128 (128) IOPS=861856, IOS/call=25/25, inflight=64 (64) IOPS=892896, IOS/call=25/25, inflight=96 (96) IOPS=875808, IOS/call=25/25, inflight=128 (128) IOPS=887808, IOS/call=25/25, inflight=32 (80) IOPS=889984, IOS/call=25/25, inflight=128 (128) all patches: IOPS=872192, IOS/call=25/25, inflight=96 (96) IOPS=887360, IOS/call=25/25, inflight=32 (32) IOPS=894432, IOS/call=25/25, inflight=128 (128) IOPS=884640, IOS/call=25/25, inflight=32 (32) IOPS=886784, IOS/call=25/25, inflight=32 (32) IOPS=884160, IOS/call=25/25, inflight=96 (96) IOPS=886944, IOS/call=25/25, inflight=96 (96) IOPS=903360, IOS/call=25/25, inflight=128 (128) IOPS=887744, IOS/call=25/25, inflight=64 (64) IOPS=891072, IOS/call=25/25, inflight=32 (32) IOPS=900512, IOS/call=25/25, inflight=128 (128) IOPS=888544, IOS/call=25/25, inflight=128 (128) IOPS=877312, IOS/call=25/25, inflight=128 (128) IOPS=895008, IOS/call=25/25, inflight=128 (128) IOPS=889376, IOS/call=25/25, inflight=128 (128) David