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An issue with Windows 7 Task Manager. In the Processes tab 2 columns related to process usage memory ('working set' and 'private working set') are shown but with no data! In the Resource Monitor in the Performance tab they are shown instead!

does anyone know what could be the problem?

Thanks!

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You can select a number of measures to include in the Processes tab: View | Select Columns….

However, without a fair understanding of Windows virtual and physical address space and memory management system all the numbers should be treated as a poor guide.

(To learn more of the complexities—difference between shared and non-shared, address space and commit, work set vs. virtual address space, ...—Mark Russinovich's two part presentation at PDC10 is a pretty good introduction.)

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Thank you Richard! Actually I can see the columns but not the numbers! Here is a snapshot: i54.tinypic.com/e5qpl4.jpg – Baky Feb 18 '11 at 14:23
@user68115: Suggest having a look at Process Explorer, if that has the same problem (when run as administrator) ⇒ you have a significant problem with your system. If Process Explorer is OK, not sure why there would be this inconsistency (but can't think it is a good sign). – Richard Feb 18 '11 at 15:47
followed your suggestion.. but numbers are shown neither in Process Explorer! I can see them only In Resource Monitor! What is the next step ?! – Baky Feb 18 '11 at 16:12
@Baky: I'm really not sure, they've always worked here. So 1. refine Q here, 2. Google/Bing for others with the same problem, use this information to help with #1. And make sure any important data is backed up (and verify it is recoverable), you might be looking at a repair or re-install. – Richard Feb 18 '11 at 16:40
Are you running Task Manager or Process Explorer as Administrator? I've seen that behavior when running as a standard user, but not as admin. – afrazier Feb 18 '11 at 21:53
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