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Thread: looking for source of major page faults

  1. #1
    Join Date
    May 2009
    Location
    Boston
    Posts
    350

    looking for source of major page faults

    Hello,

    I am working on a tool that is running alright but /usr/bin/time -v indicates 1393 major page faults. This doesn't make any sense because the footprint of the application is only 356608 kb and I have ~2.5GB of available RAM. Why would the system be paging the application unless it doesn't have all the RAM it needs?

    I am not sure how to track this down? Should I profile the app first? Would that tell me where in the code this is happening?

    LMHmedchem

  2. #2
    Join Date
    Feb 2017
    Posts
    359

    Re: looking for source of major page faults

    It may not necessarily have to do with page swapping.

    It may be that your tool is loading utilities from disc (possibly at start) and that the benchmark program is counting this as major page faults.
    Last edited by wolle; August 11th, 2018 at 02:29 AM.

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