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Posted to commits@cassandra.apache.org by "Jeremy Hanna (JIRA)" <ji...@apache.org> on 2019/06/04 22:07:00 UTC
[jira] [Updated] (CASSANDRA-15127) Add compression performance
metrics
[ https://issues.apache.org/jira/browse/CASSANDRA-15127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jeremy Hanna updated CASSANDRA-15127:
-------------------------------------
Component/s: Feature/Compression
> Add compression performance metrics
> -----------------------------------
>
> Key: CASSANDRA-15127
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15127
> Project: Cassandra
> Issue Type: Task
> Components: Feature/Compression, Observability/Metrics
> Reporter: Michael
> Priority: Normal
>
> When doing some bulk load into my cluster I notice almost 100% CPU usage.
> As I am using DeflateCompressor, I assume that the data compression/decompression contributes a lot to overall CPU load. Unfortunately cassandra doesn't seem to have any metrics explaining how much CPU time has been required for that.
> So I guess it would be useful to introduce cumulative times for compression and decompression, breaking down by each supported compression algorithm.
> Then by comparing how much does each specific value increase per minute, with number of processed requests and their cumulative times, it would be easy to conclude how costly is the compression.
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