On Thu, Jul 25 2013, Neto, Antonio Jose Rodrigues wrote: > > 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) That would certainly easily be feasible. But since that would override any other blocksize setting, might be cleaner to just have a boolean saying whether to interpret these fields as "read,write" or "sequential,random" instead. BTW, if you use filename= twice like you do above, only the last one will be effective. -- 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
