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https://issues.apache.org/jira/browse/CASSANDRA-11939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16686574#comment-16686574
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Amanda R Debrot commented on CASSANDRA-11939:
---------------------------------------------
Hi,
I took a look at this Jira and have attached the change for versions 2.2, 3.0,
3.11 and trunk. Please review and let me know if any there are any issues.
Thanks!
here is the output from these patches: [^11939-output.txt]
||2.2||3.0||3.11||trunk||
|[^11939-2.2.txt]|[^11939-3.0.txt]|[^11939-3.11.txt]|[^11939-trunk.txt]|
> Read and Write Latency columns are swapped in proxyhistograms vs cfhistograms
> -----------------------------------------------------------------------------
>
> Key: CASSANDRA-11939
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11939
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Reporter: J.B. Langston
> Priority: Minor
> Labels: lhf
> Attachments: 11939-2.2.txt, 11939-3.0.txt, 11939-3.11.txt,
> 11939-output.txt, 11939-trunk.txt
>
>
> It’s triggering my ocd that read and write latency columns are swapped in
> proxyhistograms vs cfhistograms. I guess the argument against changing it now
> is that it could screw with some peoples scripts or expectations, but it does
> make it hard to eyeball when you’re trying to compare local latencies vs
> coordinator latencies.
> {code}
> Percentile SSTables Write Latency Read Latency Partition Size
> Cell Count
> (micros) (micros) (bytes)
> 50% 4.00 17.00 770.00 8239
> 4
> 75% 5.00 24.00 924.00 17084
> 17
> 95% 5.00 35.00 61214.00 51012
> 24
> 98% 6.00 35.00 126934.00 105778
> 24
> 99% 6.00 72.00 152321.00 152321
> 35
> Min 0.00 9.00 36.00 21
> 0
> Max 6.00 86.00 263210.00 20924300
> 1109
> Percentile Read Latency Write Latency Range Latency
> (micros) (micros) (micros)
> 50% 1331.00 535.00 11864.00
> 75% 17084.00 642.00 20501.00
> 95% 219342.00 1331.00 20501.00
> 98% 315852.00 2759.00 20501.00
> 99% 379022.00 3311.00 20501.00
> Min 373.00 73.00 9888.00
> Max 379022.00 9887.00 20501.00
> {code}
> Ideally read and write latencies should be in the same order and the first
> and second columns on both so they’re directly aligned. The sstables column
> should be moved to the 3rd column to make way.
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