On 7/25/13 3:11 PM, "Jens Axboe" <axboe@xxxxxxxxx> wrote: >On 07/25/2013 01:07 PM, Neto, Antonio Jose Rodrigues wrote: >> >> On 7/25/13 3:03 PM, "Jens Axboe" <axboe@xxxxxxxxx> wrote: >> >>> On 07/25/2013 01:02 PM, Neto, Antonio Jose Rodrigues wrote: >>>> Just to confirm.. >>>> >>>> bs_is_seq_rand=1 >>>> >>>> bs=64k,4k >>>> >>>> It's 64K for sequential and 4K for random >>>> >>>> Right? >>> >>> Correct. If bs_is_seq_rand is set, any READ block size setting is >>> applied to sequential IO, and any WRITE block size setting is applied >>>to >>> random IO. >>> >>> -- >>> Jens Axboe >>> >> >> Let me see if I understood: >> >> But Jens, if I want sequential read AND write 64KB and random read AND >> write 4KB? > >Then you'd do: > >bs=64k,4k >bs_is_seq_rand=1 > >any ANY sequential IO will be 64kb, and ANY random IO will be 4kb. > >-- >Jens Axboe > This? [workload] bs=64k,4k bs_is_seq_rand=1 ioengine=libaio iodepth=2 numjobs=64 direct=1 runtime=2400 size=2000g filename=\\.\PhysicalDrive9:\\.\PhysicalDrive10 rw=randrw rwmixread=85 percentage_random=59,67 thread unified_rw_reporting=1 group_reporting=1 -- 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
