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Posted to commits@cassandra.apache.org by "Ariel Weisberg (JIRA)" <ji...@apache.org> on 2015/01/15 22:56:35 UTC

[jira] [Created] (CASSANDRA-8634) Multi-thread commit log compression

Ariel Weisberg created CASSANDRA-8634:
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             Summary: Multi-thread commit log compression
                 Key: CASSANDRA-8634
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8634
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
            Reporter: Ariel Weisberg


The initial commit log compression implementation can do about 240 megabytes/second (uncompressed input) on a fast (500 megabytes/sec)  SSD.

Assuming a 1.5x compression ratio that is 160 megabytes/second of output. Enough to saturate a spinning disk, but not an SSD.



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