Usage: iostatparse.py [-h] file [file ...]
Parse the output of zpool iostat to generate summarized performance statistics
Positional arguments:
file Text file(s) containing the zpool iostat output to parse
Details:
Outputs 50th, 90th, 95th, 99th percentile and max value for performance statistics generated by zpool iostat command. Performance statistics include R/W/Combined IOPS and throughput, I/O size, total R/W latency, and disk R/W latency. Also calculates R/W mix, average I/O size, total data written across iostat interval, and average total written per day.
Sample Output:
Unit 50p 90p 95p 99p Max Avg ฯ
------ ----- ----- ----- ----- ----- ----- -----
Read IOPS Ops/Sec 0 142 163 202 2009 42.04 68.95
Write IOPS Ops/Sec 0 897 1006 1610 2220 199.65 404.89
R+W IOPS Ops/Sec 23 937 1065 1635 2305 241.69 410.8
Read Throughput MiB/sec 0.0 23.2 26.5 31.43 78.5 6.46 10.36
Write Throughput MiB/sec 0.0 5.32 7.52 17.23 31.7 1.47 3.48
R+W Throughput MiB/sec 0.18 25.44 28.26 37.43 78.5 7.93 10.92
Read IO Size KiB 170.92 172.7 173.61 177.69 209.0 135.44 64.93
Write IO Size KiB 6.33 9.99 11.44 13.85 34.38 7.04 2.12
Read Tot. Lat. mSec 2.0 17.0 19.0 25.0 116.0 5.39 7.08
Write Tot. Lat. mSec 1.0 2.0 3.0 4.0 4.0 1.25 0.64
Read Disk Lat. mSec 1.0 2.0 3.0 4.0 4.0 1.25 0.64
Write Disk Lat. mSec 2.0 17.0 19.0 25.0 116.0 5.36 7.04
Total Samples Parsed: 8,175 (2h 16m 15s)
Read Mix (by Op Count): 17 %
Read Mix (by Size): 81 %
Total Written: 0.01 TiB
Total Written per Day: 0.12 TiB
Copyright 2021 Jason Rose
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