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  • Hi. I tried this but had no luck finding anything called Private Bytes. Can you give a step-by-step?
    – dggoldst
    Commented Aug 4, 2009 at 7:49
  • Have added... Commented Aug 4, 2009 at 7:58
  • Thanks, this is very helpful. I've added the analysis to the question. Still can't figure out why it doesn't sum to 750 though.
    – dggoldst
    Commented Aug 4, 2009 at 10:08
  • Very odd. I could point out that PrivateBytes is a subset of VirtualBytes (Virtual bytes is the proportion of address space allocated, whilst private bytes is that memory that hasn't been freed yet - you can get fragmentation of memory with a small memory leak, and have applications die with not enough memory, even when there is plenty available). It may be that the virtualisation driver is allocating the memory in a way that means it won't show up, which would makes sense as the memory should be immune from paging out to disk. Commented Aug 4, 2009 at 13:01
  • Of the four counters you put in your table, only "PoolNonPagedBytes" is a count of nonpageable virtual memory, hence that amount of physical memory will be used.The others are all virtual. Like any other virtual memory size the actual RAM it uses is almost always much less, That's one of the whole points of virtual memory. Commented Sep 26, 2017 at 21:55