Is there a way to diagnose unexpected flushes of pagecache in RHEL 5?
Issue
- My system is building up pagecache during backups or other operations and then it is suddenly being flushed, causing performance problems.
- What is causing the kernel to suddenly flush page cache?
- My cluster node is experiencing sudden cache flushes which leads to increased CPU usage by
glock_workqueue
Environment
- Red Hat Enterprise Linux (RHEL) 5
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