Windows – Reading the output of perfmon

As per this answer, I've configured perfmon to show

• Memory / Pages Input/sec
• CPU / CPU Time (%)
• Physical Disk / Average Queue length

(Names might be slightly different on an English version of Windows). Now I see these average values:

• Memory: 74.613 (1.000)
• CPU: 16.642 (1.000)
• Disk: 0.160 (100.000)

How do I interpret these values? CPU is simple (16.6% usage).

But how about disk? Is that 16 requests every second? Or 0.16? Or 0.0016? That doesn't seem right; the LED is flashing madly.

And page faults: Is that 74 page loads/sec?

For the fun of it, I've added "Physical Disk / Bytes read/sec" and "Physical Disk / Bytes written/sec". Here I get 235478.228 and 30568.626 respectively with a factor of 0.0001. Does that translate to 235MB/s read (implausible with a desktop harddisk) or 235 Bytes/s? Again the LED on the case indicates it must be much more.

Thanks a lot for clearing this up.

[EDIT] One thing which I figured out: The "factor" is to scale the value to be able to display it in the graph. The values below the graph (current, average, min, max) are absolute (or unscaled).

[EDIT2] Sorry, I mixed up the factors for memory and queue length.

[EDIT3] I'm on Windows XP/SP3.

And for those people who have been looking for the "Explain" button: 1. Click on "Add" (new indicator). In the dialog, there is an "Explain" button which tells you something about the currently selected indicator.

And a message to MicroSoft: If you supply a list box to select one option out of a whole lot, make that widget a bit bigger, okay? Scrolling wastes valuable human CPU power.