Virtual memory address space

From: Andrei Voropaev (avorop_at_mail.ru)
Date: 10/15/04

  • Next message: Kasper Dupont: "Re: Virtual memory address space" 
    Date: 15 Oct 2004 11:50:25 GMT

    Hello!

    After reading thru the books and asking others I know that a user space
    process under Linux on 32 bit system can address only first 3G of space.
    (In default configuration).

    Now. I have a multithreaded application that does a lot of mmaps
    (approximately 2G). In the /proc/<pid>/status I see

    VmSize: 2241348 kB
    VmLck: 0 kB
    VmRSS: 149136 kB
    VmData: 326436 kB
    VmStk: 528 kB
    VmExe: 576 kB
    VmLib: 7252 kB

    This application can't create any more threads. pthread_create returns
    EAGAIN. What could be the reason for that? I have 2G of RAM with 1G of
    swap. Swap is not used at all. 2.4 Kernel is compiled with HIMEM option.

    Basically I don't understand what happened to the 800M of addresses that
    I should be able to use?

    Andrei

  • Next message: Kasper Dupont: "Re: Virtual memory address space"

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