Which figure is correct, Task Manager or Performance Monitor

[jamesp1]

We currently investigating the memory usage for an Oracle process running on NT4.0 SP6a. We have the following stats:

Task Manager shows: Memory Usage 1269376K
Performance Monitor shows: Virtual Byte Usage 1877831680 bytes (1833820K)

Our question is, are these figures measuring the same thing and if they are, which one is correct. as we seem to be missing 600M of memory somewhere.

 

[Jpoandl]

From Perfmon:

"Virtual Bytes is the current size in bytes of the virtual address space the process is using. Use of virtual address space does not necessarily imply corresponding use of either disk or main memory pages. Virtual space is finite, and by using too much, the process can limit its ability to load libraries."

Not if this helps... Joseph L. Poandl
MCSE 2000