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https://issues.apache.org/jira/browse/CASSANDRA-668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12796770#action_12796770
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Jonathan Ellis commented on CASSANDRA-668:
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(committed patch to 0.5 and trunk)
> long commitlog syncs can cause write pauses
> -------------------------------------------
>
> Key: CASSANDRA-668
> URL: https://issues.apache.org/jira/browse/CASSANDRA-668
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 0.5, 0.9
>
> Attachments: 668.patch
>
>
> 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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