On 03/07/2016 01:46 PM, Jeff Furlong wrote:
Thanks for the suggestions and patches. Using the latest fio version, the JESD219 workload is possible: # fio -version fio-2.6-27-gd283 # fio --name=JESD219 --ioengine=libaio --direct=1 --rw=randrw --norandommap --randrepeat=0 --rwmixread=40 --rwmixwrite=60 --iodepth=256 --size=100% --numjobs=4 --bssplit=512/4:1024/1:1536/1:2048/1:2560/1:3072/1:3584/1:4k/67:8k/10:16k/7:32k/3:64k/3 --random_distribution=zoned:50/5:30/15:20/80 --overwrite=1 --filename=/dev/nvme0n1 --group_reporting --runtime=5m --time_based --output=JESD219 A quick statistical analysis of the results shows: Found 20380582 IOs Found 39.9903152913% reads Found 60.0096847087% writes Found 4.00492979052% 512 Found 1.00495658073% 1024 Found 1.00079575745% 1536 Found 1.00046701316% 2048 Found 0.998764412125% 2560 Found 0.998043137335% 3072 Found 0.999520033334% 3584 Found 67.0145778958% 4096 Found 9.98662844859% 8192 Found 6.99898560306% 16384 Found 2.99961993235% 32768 Found 2.99271139558% 65536 Found 49.9895734086% 0-5% Found 30.0126463513% 5-20%% Found 19.99778024% 20-100% So we can confirm (with a reasonable tolerance) that the read/write distribution, the blocksize distribution, and the zoned distribution hold true. Feel free to modify the fio cmd for your actual JESD219 workload (duration, logs, etc.).
Thanks for posting this Jeff, looks great! -- 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
