Benchmarking: FIO
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CERN Fio Benchmarks
- Ref: http://it-div-procurements.web.cern.ch/it-div-procurements/IT-3821/fio/
- Setup fio config file (/root/fio/fio-bench) with content below for the benchmarks run
[global] direct=1 bsrange=4k-4k #################### #numjobs should be half of the number of physical cores on the sample system. numjobs=2 ################### directory=/srv/castor/04 # directory where '/dev/sda1' disk is mounted on iodepth=24 timeout=3600 [f1] size=10000MB rw=randrw
- Run fio benchmark (average over 3 runs)
for i in {1..3}
do
fio --eta=always --latency-log --bandwidth-log --output=/root/fio/fio-bench.${i}.log /root/fio/fio-bench
sleep 3
done
- Results:- grep -i iops /root/fio-bench.[1|2|3].log and sum all the iops values
grep -i iops /root/fio-bench.1.log fio-bench.1.log: read : io=728220KB, bw=207137 B/s, iops=50 , runt=3600019msec fio-bench.1.log: write: io=727012KB, bw=206793 B/s, iops=50 , runt=3600019msec fio-bench.1.log: read : io=729100KB, bw=207388 B/s, iops=50 , runt=3600001msec fio-bench.1.log: write: io=723424KB, bw=205773 B/s, iops=50 , runt=3600001msec grep -i iops /root/fio-bench.2.log fio-bench.2.log: read : io=598968KB, bw=170372 B/s, iops=41 , runt=3600006msec fio-bench.2.log: write: io=603348KB, bw=171618 B/s, iops=41 , runt=3600006msec fio-bench.2.log: read : io=601040KB, bw=170962 B/s, iops=41 , runt=3600001msec fio-bench.2.log: write: io=600416KB, bw=170784 B/s, iops=41 , runt=3600001msec grep -i iops /root/fio-bench.3.log fio-bench.3.log: read : io=675160KB, bw=192044 B/s, iops=46 , runt=3600023msec fio-bench.3.log: write: io=675108KB, bw=192029 B/s, iops=46 , runt=3600023msec fio-bench.3.log: read : io=675532KB, bw=192149 B/s, iops=46 , runt=3600025msec fio-bench.3.log: write: io=676816KB, bw=192515 B/s, iops=47 , runt=3600025msec IOPS (single drive):= (200 + 164 + 185)/3 = 183
- Calculate the IOPS from the log file
grep -i iops md0_3drive_fio-bench.1.log | sed -e 's/[,:=]/ /g' | awk '{sum=sum+$7} END {print sum}'
Results
| Drive Model | Number of drives | Drive RPM | IOPS |
|---|---|---|---|
| 250GB (WD2503ABYX) | 3 (raid0) | 7200 RPM | 471 |
| 2TB | 2 (raid0) | 5400 RPM | XXX |
| Intel 320 40Gb | 3 (raid0) | N/A | 1832 |
| Intel 320 40Gb | 2 (raid0) | N/A | 870* |
| Intel 320 40Gb | 1 | N/A | 606 |
| Intel 320 160Gb | 2 (raid0) | N/A | 3279 |
| Intel 320 160Gb | 1 | N/A | 1591 |
*Below expected, please run again when drives are available. Could be due to wear as this test was run directly after the 3 drive raid 0.