From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: Linux OS killed fio process because fio invoked oom_killer References: From: Jens Axboe Message-ID: <56F17326.3000908@kernel.dk> Date: Tue, 22 Mar 2016 10:30:30 -0600 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit To: flash yan , fio@vger.kernel.org List-ID: On 03/22/2016 08:06 AM, flash yan wrote: > Hi all, > > I have run fio-2.7 to test iscsi device, one unusual issue happened. > If I set the io_size to 4096, queue_depth to 16 ,rw to randwrite and > run_time to 3000, > the fio would invoke oom_killer and the Linux OS would kill the fio process. > The machine have about 11 GB memory and I have tried the machine with > 23GB, the issue also happened. > I think fio have problem when dealing with 4KB io_size then used too > many memory. When did this happen - shortly after the job is started, or long after? How big is the iscsi device? Did you have verify= options enabled? -- Jens Axboe