Variance in memory reported with perfmon vs Task Manager in Windows

Asked Apr 10 '20 at 17:17

Active Apr 10 '20 at 17:17

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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?

asked Apr 10 '20 at 17:17

vizyourdata

56 GB in task manager is not the committed bytes. – Greg Askew Apr 10 '20 at 17:37
I'm looking at the 89% in task manager vs 53.39% on the last line of the txt file. – vizyourdata Apr 10 '20 at 17:54
Also not the same as committed bytes. – Greg Askew Apr 10 '20 at 18:15
What is task manager representing then? – vizyourdata Apr 10 '20 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 '22 at 13:04

Variance in memory reported with perfmon vs Task Manager in Windows

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