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I am recording Memory\% Committed Bytes In Use with perfmon every 15 seconds but I see that it doesn't always tie to task manager's reported memory %. They almost always tie but when memory starts to climb on the server, perfmon will show much lower than task manager. Here is a recording of one example. Which is more accurate?

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  • 56 GB in task manager is not the committed bytes.
    – Greg Askew
    Apr 10, 2020 at 17:37
  • I'm looking at the 89% in task manager vs 53.39% on the last line of the txt file. Apr 10, 2020 at 17:54
  • Also not the same as committed bytes.
    – Greg Askew
    Apr 10, 2020 at 18:15
  • What is task manager representing then? Apr 10, 2020 at 19:13
  • It includes the Windows "cached" and/or reserved memory, so the usage shown at Task Manager is usually higher than the "real" one (used exclusively by processes).
    – Shirkam
    May 20, 2022 at 13:04

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