Applies to ONTAP 9 Data ONTAP 8 Data ONTAP operating in 7-Mode Answer Generally, discarded packets below 0.1% of the total traffic should not substantially affect service. Additional Information A hig...Applies to ONTAP 9 Data ONTAP 8 Data ONTAP operating in 7-Mode Answer Generally, discarded packets below 0.1% of the total traffic should not substantially affect service. Additional Information A high volume of traffic can lead bus overruns causing some packets to be discarded. This does not always have a noticeable impact on the environment. More information can be found in our KB article on Troubleshooting Ethernet Network Ports in ONTAP using ifstat. Why does packet loss impact performance?
NetApp supports the use of the Oracle dNFS clients. Important known Bug fixes for Direct NFS for Oracle RDBMS are listed below: There is a performance degradation for multiblock reads when using Direc...NetApp supports the use of the Oracle dNFS clients. Important known Bug fixes for Direct NFS for Oracle RDBMS are listed below: There is a performance degradation for multiblock reads when using Direct NFS, as Direct NFS fragments reads into multiple single block reads. These reads are not fragmented if the OS NFS client is being used. For maximum performance and stability, NetApp recommends to install all patches affecting Direct NFS described in Oracle document 1495104.1 for Oracle RDBMS.
Applies to Data ONTAP 8 7-mode Description This article is a starting point for understanding where a performance problem may be, and identifying other articles to help resolve the problem. Performanc...Applies to Data ONTAP 8 7-mode Description This article is a starting point for understanding where a performance problem may be, and identifying other articles to help resolve the problem. Performance issues are typically: Job run time is longer than expected Slower than expected throughput Higher than expected latency Utilization is higher or at 100% of a processing center (CPU/disk) Note: For ONTAP 9 and Clustered Data ONTAP 8, please see this article.
FPolicy will cause CIFS and NFS work to be serialized (not spread across multiple processor cores). In Data ONTAP 7-mode NFS traffic will be impacted more than CIFS traffic, since there's no equivalen...FPolicy will cause CIFS and NFS work to be serialized (not spread across multiple processor cores). In Data ONTAP 7-mode NFS traffic will be impacted more than CIFS traffic, since there's no equivalent of first_read and first_write filter This means that instead of just the first read operation being scanned, all packets for that read are scanned. (See Bug# 858682) See TR 3640 for ways to mitigate impact from overloaded FPolicy servers.
