[CASSANDRA-668] long commitlog syncs can cause write pauses

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 0.5
• Severity: Low
• Assignee: Jonathan Ellis
• Reporter: Jonathan Ellis

Authors

Jonathan Ellis

• Created: 05/Jan/10 02:29
• Updated: 16/Apr/19 09:33
• Resolved: 05/Jan/10 17:32

Description

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.