Hi, On 5 April 2017 at 17:25, GV Govindasamy <gv.govindasamy@xxxxxxxxxxx> wrote: > > In the following example, I would like 90 read ops and 10 write ops. Regardless of the values in "bssplit" or "bs" and "rwmixread/rwmixwrite" values, not able to see FIO doing 90:10 read:writes and total ops turns out to be ~20+~20 = ~40 IOPS instead of 100. > > Am I missing something here? > > Thanks > +GV > > ============================================= > $ ./fio-2.19 --version (compiled with: ./configure --build-static; make on CentOS release 6.7/3.10.0-229) > fio-2.19 > > ========================== > $ cat output/fio/bssplit_rwmix.fio > [global] > ioengine=libaio > direct=1 > time_based > norandommap > group_reporting > disk_util=0 > continue_on_error=all > rate_process=poisson > > [db-oltp-w] > bssplit=8k/90:16k/10 > size=128G > filename=/dev/sdg > rw=randrw > iodepth=8 > rwmixread=90 > rwmixwrite=10 > rate_iops=90,10,0 I think the problem may lie with rate_process=poisson - if you remove that does the workload perform better? Perhaps it is not treating the read and write rates independently... -- 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
