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Pavel Yaskevich commented on CASSANDRA-4038: -------------------------------------------- No, it's milliseconds, old one runs in ~80 ms for 100,000 inserts and new one ~109 ms on the same amount. > Investigate improving the dynamic snitch with reservoir sampling > ---------------------------------------------------------------- > > Key: CASSANDRA-4038 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4038 > Project: Cassandra > Issue Type: Improvement > Components: Core > Reporter: Brandon Williams > Assignee: Pavel Yaskevich > Fix For: 1.2 > > Attachments: CASSANDRA-4038.patch > > > Dsnitch's UPDATES_PER_INTERVAL and WINDOW_SIZE are chosen somewhat > arbitrarily. A better fit may be something similar to Metric's > ExponentiallyDecayingSample, where more recent information is weighted > heavier than past information, and reservoir sampling would also be an > efficient way of keeping a statistically significant sample rather than > refusing updates after UPDATES_PER_INTERVAL and only keeping WINDOW_SIZE > amount. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira