On Sun, Jun 30 2013, Andrew Davidoff wrote: > Hi, > > In fio output, I see two values for bandwidth that I'd expect to be > the same, but that are different. For example, in the results from a > sync randread fileio test: > > read : io=182811KB, bw=18279KB/s, iops=18279, runt= 10001msec > ... > bw (KB /s): min= 966, max=21410, per=99.59%, avg=18204.94, stdev=5773.57 > > > I realize they are close, but why are the values for bw= and avg= not > the same? I want to make sure I understand if these are not actually > reporting on the same statistic. > > Also, why is per= not 100%, if this job was run with only a single > thread in a single group? That's just rounding and imprecise math. Should be fixed up though. It's calculated in stat.c:show_ddir_status() and I'll be happy to take patches :-) -- Jens Axboe -- 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
