Expose P99 latency and support customizable IO testing with selective IO types and metrics #9
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The CPU idleness introduces extra overhead and storage performance drop. By default, the profiling is disabled. Signed-off-by: Derek Su <derek.su@suse.com>
shuo-wu
approved these changes
Apr 8, 2024
Users have the option to select specific IO types, including random read (randread), random write (randwrite), sequential read (seqread), and sequential write (seqwrite), as well as metrics like IOPS, bandwidth, and latency. There's no requirement to conduct all tests. Longhorn 8254 Signed-off-by: Derek Su <derek.su@suse.com>
Expose 99th percentile. It means that 99% of the requests should be faster than given latency. Longhorn 8254 Signed-off-by: Derek Su <derek.su@suse.com>
PhanLe1010
reviewed
Apr 9, 2024
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Looks like this PR has big overlap with my other PR #7 . That other PRs also added many test modes.
Could we review and merge that PR first and build this one on top of it? @derekbit @shuo-wu @innobead. After the other PR is merged, I can update this PR to include the p99 if Derek is busy. Is it ok?
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Customizable IO testing with selective IO types and metrics
Users have the option to select specific IO types, including random read (randread),
random write (randwrite), sequential read (seqread), and sequential write (seqwrite),
as well as metrics like IOPS, bandwidth, and latency.
There's no requirement to conduct all tests.
Expose P99 latency
Expose 99th percentile. It means that 99% of the requests should be faster than given latency.
longhorn/longhorn#8254