On 7/25/13 12:45 PM, "Jens Axboe" <axboe@xxxxxxxxx> wrote: >On Tue, Jul 23 2013, Neto, Antonio Jose Rodrigues wrote: >> Hi All >> >> This is neto from Brazil >> >> How are you? >> >> I need to model the following workload: >> >> Sequential Read % 35.0 >> Sequential Write % 5.0 >> Random Read % 50.0 >> Random Write % 10.0 >> Random Read Working Set(GB) 1000.0 >> Random Write Working Set(GB) 1000.0 >> Sequential Read Size(KB) 64KB >> Sequential Write Size(KB) 64KB >> Random Read Size(KB) 8KB >> Random Write Size(KB) 8KB > >So that's 85% reads and 15% writes, first part: > >rw=randrw >rwmixread=85 > >and then you have 50/85 reads random and 35/85 reads sequential. That's >roughly 59% reads random. On the writes, you have 10/15 random and 5/15 >sequential. That's roughly 67% writes random: > >percentage_random=59,67 > >The latter I just added support for, before it only support a single >setting for reads and writes. > >Fio does not support splitting block sizes on a random/sequential basis. >You will have to improvise there. > >-- >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 Hi Jens This is neto from Brazil How are you? Thank you very much. So basically the option right now is to use either 8KB or 64KB right? Something like: [workload] bs=8k ioengine=libaio iodepth=2 numjobs=64 direct=1 runtime=2400 size=2000g filename=\\.\PhysicalDrive9 filename=\\.\PhysicalDrive10 rw=randrw rwmixread=85 percentage_random=59,67 thread unified_rw_reporting=1 group_reporting=1 Would be nice to have something like: block_mixed=8192,65536 (random, sequential) Thank you neto > -- 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
