windows pagfile utilization

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  • djoefish
    #1

    windows pagfile utilization

    Could anyone help me with this?

    I am running some memory intensive computations with python on XP, and
    was running out of memory when the pagefile got full (~2g)...so I reset
    the windows pagefile to 4g (maximum allowed).

    My program still crashes at 2g (according to the task manager). Do I
    need to inform python that the pagefile has a new size? How do I check
    that python is utilizing the full pagefile?

    thanks,

    djoefish

    Tags: None
    • Richard Brodie
      #2
      Re: windows pagfile utilization


      "djoefish" <djoefish@gmail .comwrote in message
      news:1156950270 .045140.44950@p 79g2000cwp.goog legroups.com...
      My program still crashes at 2g (according to the task manager). Do I
      need to inform python that the pagefile has a new size? How do I check
      that python is utilizing the full pagefile?
      It won't. You'll hit the 2Gb user virtual address space limit first.


        Comment

        • Tim Chase
          #3
          Re: windows pagfile utilization

          Not page/swap -- by default Windows only gives 2GB to
          applications for data; the rest is held for shared OS kernel
          usage.
          Is it just me or does this seem ludicrous? If I had a bunch of
          re$ource$ and I employed someone to manage them for me, would I
          find it acceptable that they consume half of the re$ource$ for
          their own use just to manage the other half of my re$ource$?

          "Thanks for putting 4 gigs of ram in your machine. How about I
          let you use 2 of 'em while I underutilize the other 2 gigs?"

          Sounds silly, IMHO.

          -tkc






            Comment

            • djoefish
              #4
              Re: windows pagfile utilization

              I guess that means that I shouldn't waste my money bumping my RAM up
              from 1g to 2g? What about Linux? Are there constraints there too?


              djoefish

                Comment

                • Richard Brodie
                  #5
                  Re: windows pagfile utilization


                  "Tim Chase" <python.list@ti m.thechases.com wrote in message
                  news:mailman.10 124.1156954110. 27775.python-list@python.org ...
                  "Thanks for putting 4 gigs of ram in your machine. How about I let you use 2 of 'em
                  while I underutilize the other 2 gigs?"
                  >
                  Sounds silly, IMHO.
                  Well, for a lot of scenarios, it's going to be the 2GB limit on system
                  space that is more of an issue. It's 2GB per process for user space,
                  whereas your whole filesystem cache, for example, is likely to have
                  to fit into that 2GB system space.

                  Having said that, tweaking the limit to 3GB, say, is a bit like rearranging
                  the deckchairs on the Titanic. DEC was doing much the same with big iron
                  VAX machines in '93. If you need that much space today, just use a 64-bit
                  system and get over it, unless you really are locked in.


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