Large write pauses to all writing apps when one app is streaming writes to NFS.
Issue
- Experiencing paused/hung apps for minutes at a time while writing large amounts of data to NFS.
- A large number of processes doing a buffered write stuck in balance_dirty_pages()
Environment
- RHEL5
- Originally seen on 2.6.18-274.12.1 (RHEL5.7)
- NFS client
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