On 28 February 2018 at 00:23, Jared Walton <jawalking@xxxxxxxxx> wrote: > If I correctly understand how fio spawns workers then: it takes the > given queue depth and splits it among workers such that a queue depth > of 32 with 16 workers results in 16 workers each maintaining a queue > depth of 2... I'm afraid this is incorrect. If I have something like [global] filename=/dev/nullb0 iodepth=32 ioengine=libaio direct=1 [worker] numjobs=16 rw=read Each worker is trying to achieve a depth of 32 so if they are all running simultaneously etc. they will generate a total depth of 512 (32 * 16). > But what happens when a queue depth of 16 is specified with 32 workers? In this case each worker is trying to achieve a depth of 16 so if all 32 are running simultaneously etc. they will still generate a total depth of 512. -- 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
