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Long CPs dominated by P2_FLUSH during SnapMirror Finalizing phase

Views:
297
Visibility:
Public
Votes:
2
Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

ONTAP 9

Issue

Long CPs occur on the SnapMirror(XDP-type relationship only) destination at the Finalizing phase, Long CPs are dominated by an elongated P2_FLUSH phase without any identifiable Disk or CPU bottlenecks from Perfstats or PerfArchives. 

Below are some of the possible symptoms:

  • Long CP > 30s
  • Back to Back CPs along with high write latency
  • CP dominated by P2_FLUSH phase
  • CPU util & Disk util is NOT high
  • SnapMirror XDP transfer is in the Finalizing phase, no matter it's a baseline transfer or an incremental transfer

 

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