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Message-ID: <CAH2r5msNR2OZRdAtt_V5Z56RiSbyCguTte_XCF1LFj+dNMdrvQ@mail.gmail.com> Date: Thu, 20 Oct 2011 12:58:58 -0500 From: Steve French <smfrench@...il.com> To: linux-cifs@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>, samba-technical <samba-technical@...ts.samba.org> Subject: Current cifs code doubles file copy speed from server to Linux client - due to Jeff Layton's async read patch set Did a quick check of the current cifs-2.6.git tree (in linux-next, which I will be requesting to be merged into 3.2-pre). Thanks to Jeff Layton's async read patch set, as expected the file copy performance from server to Linux client is dramatically faster. In a quick test copying a directory containing 144MB of movie trailers from a typical Windows Vista desktop system (as desktop) using the Linux cifs kernel client the speed more than doubled. Performance should be even better to Linux/Samba servers due to Samba's larger maximum i/o sizes. When you also consider that Pavel's byte range lock queueing and lock batching patches should help some workloads a lot, and that his SMB2 code will allow oplock (lease) upgrades - the performance of 3.2 cifs kernel client should be much better. -- Thanks, Steve -- 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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