Jerry Coffin 2003-08-06 16:13:53 UTC. What the Logical Disk and Physical Disk % Disk Time counters actually do measure is a little complicated to explain. I've been reading up on these performance counters and having some trouble deciding which ones to use for Windows VMs. Add the different performance counters that you might want to collect. C: HarddiskVolume1 If the resource is failed over, the drive is dismounted and may be presented as something different to the OS by the disk drivers. Follow this procedure to add a new Linux performance counter to collect. Current Disk Queue Length. This is a Microsoft Issue To maintain the integrity of the performance data and to improve reliability, the Microsoft performance monitoring API disables any Missing Logical Disk Performance Counters Toggle navigation *PATCH v3 00/27] btrfs zoned block device support @ 2019-08-08 9:30 Naohiro Aota 2019-08-08 9:30 ` [PATCH v3 01/27] btrfs: introduce HMZONED feature flag Naohiro Aota ` (26 more replies) 0 siblings, 27 replies; 39+ messages in thread From: Naohiro Aota @ 2019-08-08 9:30 UTC (permalink / raw Windows Performance Monitor Disk Counters Explained This corresponds in our case to a duration of 15 minutes. Based on results from those counters, we may need to investigate other counters. Figure 1. Disk sec/Transfer The average number of seconds it takes to get a response from the disk. 1. Basically, there is a reg key value in HKLM/System/CurrentControlSet/Services/PerfDisk/Performance called Disable Performance Counters that when enabled will prevent the disk counters from appearing in PerfMon. The following commands accomplish this task: Get-Counter -Counter (Get-Counter -ListSet “Processor Information”).paths Get-Counter -counter (Get-Counter -listSet “memory”).paths Type the name of the counter in the text box in the format object (instance)\counter. Logical disk performance counters are disabled by default. A 'Logical Disk Time Performance Failed' alarm signifies that this performance property value has exceeded the critical threshold value and is in this state for atleast a period of 15 data collection intervals.