commitlog sync seems to be affected by i/o on other devices
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Key: CASSANDRA-670
URL: https://issues.apache.org/jira/browse/CASSANDRA-670
Project: Cassandra
Issue Type: Bug
Reporter: Jonathan Ellis
Priority: Minor
doing some testing on a system with commitlog on a separate device + xfs
filesystem, syncing shouldn't have to wait for IO from the data filesystem, but
we're seeing CL sync times up to almost 5s when the data fs is extra busy
(adding bonnie++ to normal cassandra activity helps reproduce this).
CASSANDRA-668 band-aided this a bit but it would be good to figure out what's
going on here: is it our code at fault? the JVM's? the linux kernel's?
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