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https://issues.apache.org/jira/browse/CASSANDRA-5581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mikhail Mazursky updated CASSANDRA-5581:
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Attachment: trunk-5581.txt
Attaching proposed patch.
> Use System.nanoTime() to measure intervals
> ------------------------------------------
>
> Key: CASSANDRA-5581
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5581
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Mikhail Mazursky
> Priority: Critical
> Attachments: trunk-5581.txt
>
>
> System.nanoTime() should always be prefered to System.currentTimeMillis() to
> measure time intervals. It's not affected by system clock adjustments & drift.
> While testing C* we found that it's very unstable if system clock drifts.
> Problems happen even under low load with tiny dataset. In our case other VMs
> on the same hardware box produced high CPU load and system clock drifted a
> lot in C* VMs. We fixed that but there is definitelly room for improvement in
> C* itself.
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