From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe Subject: Re: fio rbd completions (Was: fio rbd hang for block sizes > 1M) Date: Mon, 27 Oct 2014 08:15:31 -0600 Message-ID: <544E5383.9010001@kernel.dk> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: Received: from mail-pa0-f50.google.com ([209.85.220.50]:64816 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753193AbaJ0OP3 (ORCPT ); Mon, 27 Oct 2014 10:15:29 -0400 Received: by mail-pa0-f50.google.com with SMTP id eu11so5617743pac.9 for ; Mon, 27 Oct 2014 07:15:28 -0700 (PDT) In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Ketor D , Mark Kirkwood Cc: Mark Nelson , Mark Nelson , fio@vger.kernel.org, "xan.peng" , "ceph-devel@vger.kernel.org" On 10/27/2014 03:27 AM, Ketor D wrote: > Hi, Jens: > I have test your v2 and v3 patch. > The v2 patch get SIGABT and crash. The v3 patch hang. > > Why not simply comment usleep? Because that is very inefficient as well, then fio would basically be busy looping waiting for IO to finish. -- Jens Axboe