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    • https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/Constant_EMS_messages_wafl_inode_cache_highLoad_on_a_SnapMirror_destination_volume
      Applies to ONTAP 9 Clustered Data ONTAP 8.3 Storage Virtual Machine Disaster Recovery (SVM DR) Volume Move Issue Constant EMS messages "wafl.inode.cache.highLoad" are observed on a SnapMirror destinat...Applies to ONTAP 9 Clustered Data ONTAP 8.3 Storage Virtual Machine Disaster Recovery (SVM DR) Volume Move Issue Constant EMS messages "wafl.inode.cache.highLoad" are observed on a SnapMirror destination volume or the Volume Move destination volume. No performance impact. Example: [<node_name>: wafl_exempt02: ems.engine.suppressed:debug]: Event 'wafl.inode.cache.highLoad' suppressed 50537 times in last 3600 seconds.
    • https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/Inode_Cache_file_operations_suspension_heavily_on_LOAD_INODE_NO_WIPS
      Many long running READDIR/READDIR+ requests could be identified from a packet trace, it could take up to tens of seconds, or even hundreds of seconds in the worst case scenario [<node_name>: wafl_exem...Many long running READDIR/READDIR+ requests could be identified from a packet trace, it could take up to tens of seconds, or even hundreds of seconds in the worst case scenario [<node_name>: wafl_exemptxx: wafl.readdir.expired:error]: A READDIR file operation has expired for the directory associated with volume <volume_name>/@vserver:<vserver_uuid> Snapshot copy ID xx and inode <inode_number>.