Hi, On 12 July 2017 at 06:13, Ido Ben-Tsion <idob@xxxxxxxxxxxxx> wrote: > fio version: fio-2.21-37-ga2c9 > > fio file excerpt: > [global] > ioengine=sg > invalidate=1 > ramp_time=5 > iodepth=16 > runtime=300 > time_based > bs=64k > norandommap > loops=5 > > [seq_read-2-jobs] > rw=read > numjobs=2 > stonewall > > [randread] > rw=randread > [seq_write] > rw=write > stonewall > ... > > In the report, I see jobs with groupid 0 which are not supposed to be > on same group: > ...,jobname,groupid,... > ...,seq_read-2-jobs,0,... > ...,seq_read-2-jobs,0,... > ...,randread,0,... > ...,seq_write,1,... I'm not sure I follow - which jobs are wrong? Looking at the opening sentence explanation (and the alternative name) for stonewall in the HOWTO (http://fio.readthedocs.io/en/latest/fio_man.html#cmdoption-arg-stonewall ) seems to describe the behaviour you're seeing. Can you be more explicit as to the problem? -- Sitsofe | http://sucs.org/~sits/ -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html