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    • How to troubleshoot  performance issue related to Snapmirror throughput and link utilization
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/How_to_troubleshoot__performance_issue_related_to_Snapmirror_througput
      Applies to Ontap 9 Snapmirror Link utilization Description Lower throughput than expected on network interfaces (10G,25G or 40G) between clusters in different datacenters
    • Lower than expected throughput with single threaded application
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/Lower_than_expected_throughput_with_single_threaded_application
      Applies to ONTAP 9 Thoughtspot (Application) Single threaded application Issue Concurrency and operation size are 2 major factors in throughput. Single threaded operations have low concurrency and can...Applies to ONTAP 9 Thoughtspot (Application) Single threaded application Issue Concurrency and operation size are 2 major factors in throughput. Single threaded operations have low concurrency and can prevent the client from achieving higher throughput.
    • Slow reads on a CIFS share (no issues with writes)
      https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/Slow_reads_on_a_CIFS_share_no_issues_with_writes
      Applies to ONTAP 9 CIFS Issue A read activity is much slower then a write activity on a CIFS share End users are reporting low throughput (poor performance) by read activity (slow read) on a CIFS shar...Applies to ONTAP 9 CIFS Issue A read activity is much slower then a write activity on a CIFS share End users are reporting low throughput (poor performance) by read activity (slow read) on a CIFS share Data ONTAP and NetApp monitoring tools reports no relevant information Packet trace (tcpdump) between CIFS-server and -client reports issues on read activity on client side: small payload, packet drop (loss), server side is fine
    • High Latency and lower throughput for large Sequential IO Size driven from Disk subsystem
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/High_Latency_and_lower_throughput_for_large_Sequential_IO_Size_driven_from_Disk_subsystem
      Applies to All FAS Systems SATA Disks SAS Disks Flash Pool Aggregate Issue Latency is reported for READ and WRITE IOPS with large IO Size.