Disk Performance counters in Windows Server 2012 R2 Task Manager

Have you ever wondered why you DO see performance data in Windows 8/8.1 under the performance tab in Task Manager, but DON’T see this same information in Windows Server 2012/2012 R2?

Well I kind of missed seeing that information in Server but never really bothered to really investigate.

Windows 8/8.1
Windows Server 2012/2012 R2
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I know the solution is too simple for words, but just in case you also forgot about this good old Diskperf command which you can run from an administrative command or Powershell prompt:

Diskperf –Y to switch on the Disk Performance counters. You don’t need an academic degree to figure out how to disable them again.

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So much for an easy tip with great results.

3 Comments

  1. November 14, 2013    

    Aren’t possible performance issues on the server the reasoning behind this?

  2. November 14, 2013    

    The question is: are the disk perf counters disabled by default for a reason ? Do they impact system or disk performance ?

  3. December 31, 2013    

    Yes, they aren’t on by default in “Server” because of the performance decrease they impose: “The Disk counter has been removed from the Performance tab in Windows Server 2012. This is because there is significant performance impact to collect Disk metrics on a Server due to the overhead Task Manager may cause in querying each Disk IO for each process/thread on individual disk.” (Source: http://blogs.technet.com/b/askperf/archive/2012/10/27/windows-8-windows-server-2012-the-new-task-manager.aspx ) It’s recommended you use Resource Monitor to watch the disks, or only enable the counters during specific troubleshooting work.

  1. Microsoft Most Valuable Professional (MVP) – Best Posts of the Week around Windows Server, Exchange, SystemCenter and more – #55 - TechCenter - Blog - TechCenter - Dell Community on November 18, 2013 at 16:16
  2. Microsoft Most Valuable Professional (MVP) – Best Posts of the Week around Windows Server, Exchange, SystemCenter and more – #55 - Dell TechCenter - TechCenter - Dell Community on November 18, 2013 at 16:18
  3. Disk Performance counters in Windows Server 201... on December 6, 2013 at 03:58

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