Jon Haddad created CASSANDRA-15452:
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Summary: investigate using POSIX_FADV_WILLNEED on compaction
Key: CASSANDRA-15452
URL: https://issues.apache.org/jira/browse/CASSANDRA-15452
Project: Cassandra
Issue Type: Bug
Reporter: Jon Haddad
On read heavy workloads Cassandra performs much better when using a low read
ahead setting. In my tests I've seen an 5x improvement in throughput and more
than a 50% reduction in latency. However, I've also observed that it can have
a negative impact on compaction throughput.
We should investigate using the POSIX_FADV_WILLNEED on files we're compacting
to see if we can improve performance and reduce page faults.
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