Alan Boudreault created CASSANDRA-9240:
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Summary: Performance issue after a restart
Key: CASSANDRA-9240
URL: https://issues.apache.org/jira/browse/CASSANDRA-9240
Project: Cassandra
Issue Type: Bug
Reporter: Alan Boudreault
Fix For: 3.0
Attachments: cassandra_2.1-clientrequest-read.log,
cassandra_2.1.4-clientrequest-read.log, cassandra_2.1.4.log,
cassandra_2.1.5-clientrequest-read.log, cassandra_2.1.5.log, cassandra_2.1.log,
cassandra_trunk-clientrequest-read.log, cassandra_trunk.log,
cassandra_trunk_no_restart-clientrequest-read.log,
cassandra_trunk_no_restart.log, issue.yaml, run_issue.sh, trace_query.cql
I have noticed a performance issue while I was working on compaction perf tests
for CASSANDRA-7409. The performance for my use case is very bad after a
restart. It is mostly a read performance issue but not strictly. I have
attached my use case (see run_issue.sh and issue.yaml) and all test logs for
2.1.4, 2.1.5, cassandra-2.1 and trunk.
2.1.4 and 2.1.5 are OK (although 2.1.4 seems to be better?): ~6-7k ops/second
and ~2-2.5k of read latency.
branch 2.1 and trunk are NOT OK: ~1.5-2k ops/second and 25-30k of read latency.
branch 2.1 and trunk are OK without a restart: ~ same perf than 2.1.4 and 2.1.5.
I can to bisect and/or profile on Monday if needed.
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