From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <544E7912.3030503@kernel.dk> Date: Mon, 27 Oct 2014 10:55:46 -0600 From: Jens Axboe MIME-Version: 1.0 Subject: Re: fio rbd completions (Was: fio rbd hang for block sizes > 1M) References: <5449BBB3.7090109@catalyst.net.nz> <5449E50E.7000808@kernel.dk> <5449EEF1.1060407@catalyst.net.nz> <544A51C7.40803@gmail.com> <544A5DA6.2010709@gmail.com> <544AD67D.4030603@catalyst.net.nz> <544AEAE7.6080603@redhat.com> <544AF0D2.1050405@catalyst.net.nz> <544B0C7F.4080109@catalyst.net.nz> <544B1D50.4010101@kernel.dk> <544B2C19.7070009@catalyst.net.nz> <544BF808.2090800@kernel.dk> <544C2371.1020403@catalyst.net.nz> <544E547C.30009@kernel.dk> <544E6330.1000202@kernel.dk> <544E63EA.1010204@kernel.dk> <544E6691.106@kernel.dk> <544E6A8D.1040608@kernel.dk> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit To: Ketor D Cc: Mark Kirkwood , Mark Nelson , Mark Nelson , fio@vger.kernel.org, "xan.peng" , "ceph-devel@vger.kernel.org" List-ID: On 10/27/2014 10:20 AM, Ketor D wrote: > V8 patch runs good. > > The iops is 33032. If I just comment the usleep(100) in the master, I > can get iops 35245. > The CPU usage about the two test is same 120%. > So maybe this patch could be better! > > Belong to the master, this patch is perfect enough!! Agree, committed. I'll setup a local test here and see if we can't recoup those last percentages. CPU usage may have been the same for your test, but it will be more for others. A busy loop in there is not a good idea. -- Jens Axboe