Periodic performance degradation. Kswapd seen in 'D' state.
Issue
- Periodically performance degradation (slow interactive response, job throughput taking longer than normal) is experienced. These episodes sometimes last for hours, then the performance gradually recovers to "normal".
- During these slowdowns, kswpad is frequently in 'D' state.
Environment
- Red Hat Enterprise Linux 5
- Veritas filesystem
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