You can reset the performance monitoring statistics for any given zFS report or reset all of the internal zFS statistics. The syntax of this command is shown below, where report is KN, VM, LFS, LOG, LOCK, STOR, FILE, STKM, CTKC, IOBYDASD, DATASET, SVI, or ALL.

Resetting the statistics is useful if you want to view zFS performance for a given time of day, such as during peak usage. For example, if you want performance of zFS between 1 PM and 3 PM, you enter MODIFY ZFS,RESET,ALL at 1 PM and enter MODIFY ZFS,QUERY,ALL at 3 PM.

• To start the monitoring period at 1 PM, enter modify zfs,reset,all.
• To end the monitoring period at 3 PM, enter modify zfs,query,all.