What could be the reason that we are missing performance data from many many controllers for the last weeks, I have a lot of customers where both CMPG and myasup have no data for performance for the last weeks. Couple of months back it was just a few but now it is many customers for whom I cannot get any information. It seems the NetApp DB is not receiving them.
If possible, examine EMS event logs and messages files for any problems with the storage controller's collection and transmission of the Performance Data AutoSupport message. If there are problems, open a technical case with NetApp Support and be ready to provide the info from the logs, as well as the notifyd.log file (for 8.0 systems) in the /etc/log/mlog (7-Mode) or /mroot/etc/log/mlog (Cluster-Mode) directory.
Assuming you're running 8.1+ Data ONTAP, you can check to see if the ASUP was successfully with the "autosupport history show -instance" command. This will at least tell you if the first leg of the transmission worked. If it did, you should proceed with the My AutoSupport ticket. If it didn't, then you can open a technical case with NetApp Support to help you diagnose the transmission failure.