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https://issues.apache.org/jira/browse/CASSANDRA-18305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17736213#comment-17736213
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Stefan Miklosovic edited comment on CASSANDRA-18305 at 6/22/23 5:11 PM:
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So if I understood that correctly, you would like to see just this and we would
leave out 5m and 1m metrics?
{code:java}
15 minute rate 7.2/minute (that would be 0.12/s * 60s)
mean rate 6/minute (that would be 0.01/s * 60s) {code}
I am still not completely convinced this makes sense to report but anyway ....
Maybe we should omit them for now and dedicate a separate ticket where we take
a look more holistically instead of introducing something which will be later
down the road hard to get rid of as we are adding to nodetool output which is
very delicate matter. We can always add something if it turns out to be
necessary.
was (Author: smiklosovic):
So if I understood that correctly, you would like to see just this and we would
leave out 5m and 1m metrics?
{code:java}
15 minute rate 7.2/minute (that would be 0.12/s * 60s)
mean rate 6/minute (that would be 0.01/s * 60s) {code}
I am still not completely convinced this makes sense to report but anyway ....
Maybe we should omit them for now and dedicate a separate ticket where we take
a look more holistically instead of introducing something which will be later
down the road hard to get rid of as we are adding to nodetool output which is
very delicate matter. We can always and something if it turns out to be
necessary.
> Enhance nodetool compactionstats with existing MBean metrics
> ------------------------------------------------------------
>
> Key: CASSANDRA-18305
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18305
> Project: Cassandra
> Issue Type: Improvement
> Components: Tool/nodetool
> Reporter: Brad Schoening
> Assignee: Manish Ghildiyal
> Priority: Normal
> Fix For: 4.0.x, 4.1.x, 5.x
>
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> Nodetool compactionstats reports only on active compactions, if nothing is
> active, you see only:
> {quote}$nodetool compactionstats
> pending tasks: 0
> {quote}
> but in the MBean Compaction/TotalCompactionsCompleted there are recent
> statistic in events/second for:
> * Count
> * FifteenMinueRate
> * FiveMinueRate
> * MeanRate
> * OneMinuteRate
> 1) It would be useful to see in addition:
> {quote}pending tasks: 0
> compactions completed: 20
> 1 minute rate: 0/second
> 5 minute rate: 2.3/second
> 15 minute rate: 4.6/second
> {quote}
> 2) Since compaction_throughput_mb_per_sec is a throttling parameter in
> cassandra.yaml (default 64 MBps), it would be nice to show the actual
> compaction throughput and be able to observe if you're close to the limit.
> I.e.,
> {quote}compaction throughput 13.2 MBps / 16 MBps (82.5%)
> {quote}
> 3) for completness, compactionstats should list the number of concurrent
> compactors configured, perhaps simply add to existing 'pending tasks' line:
> {quote}4 concurrent compactors, 0 pending tasks
> {quote}
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