Article ID: 102020 - View products that this article applies to.
This article was previously published under Q102020
Disk performance counters, the Diskperf service, must be started prior to the Performance Monitor in order to monitor disk performance. Disk performance counters are disabled by default.
The impact of the Performance Monitor on the overall performance of a system is minimal. However, the counters (which are necessary to monitor disk performance) will have a slight impact to the overall system performance. For this reason, these counters are not started by default. Therefore, for best system performance, they should be started prior to beginning disk performance monitoring and then terminated.
To enable the Diskperf service, use either of the following two procedures.
Use to following command to disable the Diskperf service:
DISKPERF -N -- This will set the disk performance counters to never start. For best overall system performance issue this command from the command prompt after completing disk performance monitoring.
Other helpful commands that may be issued from the command prompt to assist in disk performance monitoring are:
DISKPERF /? -- Displays help for the DISKPERF command.
DISKPERF -- Displays the current status of the disk performance counters along with help for the DISKPERF command.
Diskperf -YE, the E allows monitoring of all NT Software Fault Tolerant sets that utilize the FTDISK device driver. This does not apply to hardware arrays.
For help with system performance issues in Windows Vista, visit the following Microsoft web page:
Problems with overall system speed and system performance
Article ID: 102020 - Last Review: November 1, 2006 - Revision: 2.2