Jeremy Hanna updated CASSANDRA-15127:
> 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
> 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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