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Bug #6795
closedosd: 'tell bench' write size argument is ignored
% Done:
0%
Source:
Support
Tags:
Backport:
emperor, dumpling
Regression:
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
osd bench is supposed to take a second argument as the block size in bytes, but the default block size of 4MB is always used:
$ ceph tell osd.* bench 102400 4096 { "bytes_written": 102400, "blocksize": 4194304, "bytes_per_sec": "1133884.000000"}
This can be quite useful for detecting slow OSDs, and it's best to see which OSDs are slow on particular workloads, not just 4MB writes.
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