Windows perfmon disk io counters

Simply enter your email address OR username in order to reset your password. For faster and more reliable delivery, add noreply smartertools. This article applies to recent versions of SmarterMail. View articles for SmarterMail This article will walk an Administrator through configuring Windows Performance Monitor perfmon to capture information pertaining to Disk IO utilization on the SmarterMail server.

There will be two parts to this guide, one for setting up a generic monitor to view data in real and one for configuring a data collection set in which data can be captured over a period of time.

There are various ways to monitor perfmon. You can select from 2 types of graphs Line or Histogram Bar or a Real-time report. In the perfmon icon toolbar click on 'Change Graph Type' to change to the desired view for monitoring. Next within the 'Instances of selected object' section, select the physical disk s you want to monitor by selecting the volume letter.

G o back to the 'Available Counters' list and expand the 'PhysicalDisk' node. These both measure the latency of your disks, that is, the average time it takes for a disk transfer to complete. Although this value is displayed in seconds it is actually accurate down to milliseconds. Good and bad values for these counters are really dependent on your hardware. For example, you would expect lower values for an SSD as compared to any spinning disk.

For counters like this I find it best to get a baseline after the hardware is installed and use this value going forward to determine if you are experiencing any latency issues related to the hardware. These counters each measure the total number of IO requests completed per second. Similar to the latency counters, good and bad values for these counters depend on your disk hardware but values higher than your initial baseline don't normally point to a hardware issue in this case.

Let us know in the comments! Once open, add a new counter. This is done by expanding the Monitoring Tools folder in the navigation pane and clicking on Performance Monitor. The counter settings will load in a popup window.

To monitor one or multiple disks individually, select each individual volume.