Re: malloc vs ptmalloc2

From: Mike Silbersack (silby_at_silby.com)
Date: 02/14/05

  • Next message: John-Mark Gurney: "Re: malloc vs ptmalloc2" 
    Date: Mon, 14 Feb 2005 13:12:27 -0600 (CST)
To: Uwe Doering <gemini@geminix.org>

    On Mon, 14 Feb 2005, Uwe Doering wrote:

    > Just from memory, doesn't Linux' malloc require kernel support for re-mapping
    > memory regions, which is not available in FreeBSD? This issue came up in the
    > discussion about FreeBSD's anemic realloc performance. Or has this kernel
    > functionality been added to recent versions of FreeBSD?
    >
    > You may want to investigate this before you invest too much time into your
    > porting effort.
    >
    > Uwe
    > --
    > Uwe Doering | EscapeBox - Managed On-Demand UNIX Servers

    I thought that thread was speculative, with someone saying "it would be
    nice if realloc had kernel help", or something like that. However, if
    that feature is used by some malloc library which might be portable to
    FreeBSD (so that the feature's use can be shown), I'd suggest that someone
    contact Alan Cox (alc@freebsd.org) - he seems to be working on optimizing
    the VM system right now, so he'd be the person who could code up support
    for this feature quickest.

    Mike "Silby" Silbersack
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