Bad read performance for reads after upgrading to 9.6 and later
Applies to
- Ontap 9.6 and later
- Client connected to a 1g network
- Filer connected to a 10g network
- Client generating burts of requests spaced 240ms of more
Issue
- Slow read performance will be seen with service response time surpassing the TCP retransmission time out
- A packet trace will show spaced bursts of requests and a high level of packet loss during the response traffic