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From "Jonathan Ellis (JIRA)" <>
Subject [jira] Created: (CASSANDRA-668) long commitlog syncs can cause write pauses
Date Tue, 05 Jan 2010 02:29:04 GMT
long commitlog syncs can cause write pauses

                 Key: CASSANDRA-668
             Project: Cassandra
          Issue Type: Bug
            Reporter: Jonathan Ellis
            Assignee: Jonathan Ellis
            Priority: Minor
             Fix For: 0.5, 0.9

on a heavily loaded system (deliberately exacerbated by running the bonnie++ i/o benchmarking
tool at the same time as cassandra -- which might not be too far off from the environment
you would see on some VPS hosts), we're seeing CL sync times of 1-5s, causing write pauses.

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