Re: Maple troubles with SMP -- solved. How to contribute this to the FBSD documentation now?

From: Geert Hendrickx (geert.hendrickx_at_ua.ac.be)
Date: 10/13/04

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    Date: Wed, 13 Oct 2004 10:43:32 +0200
To: freebsd-questions@freebsd.org

    On Tue, Oct 12, 2004 at 06:50:42PM +0200, Geert Hendrickx wrote:
    > Hello,
    >
    > I'm running FreeBSD 4.10-STABLE on a hyperthreaded i386 processor. My
    > kernel has SMP enabled, and with sysctl machdep.hlt_logical_cpus=0, top
    > shows two logical cpu's up and running. Works fine.
    >
    > Now I have some weird experiences running Maple 9.5 (with Linux
    > emulation). When sysctl machdep.hlt_logical_cpus is set to 0, Maple
    > won't start. I get the splash screen, but it hangs forever (top shows a
    > java process eating all cpu time). It takes a kill -9 to stop it.
    >
    > When machdep.hlt_logical_cpus is set to 1 (single cpu), Maple starts
    > fine, I can enter commands and everything works ok (except the help
    > function, it crashes very often). When I set the sysctl back to 0,
    > Maple gets very unstable when I enter further commands. Sometimes it
    > hangs (without any cpu action like before), sometimes it crashes, very
    > unpredictable behaviour really.
    >
    > Does anyone have any clue about what is happening? And about who is to
    > blame, FreeBSD's SMP code, Maple, or maybe the Linux emulation code?
    >
    > GH

    The problems described above appear to have to do with the Java RE that
    comes with the newer versions of Maple (older versions -- at least I
    know about version 7 -- didn't use Java, and worked perfectly on
    FreeBSD).

    I have hacked and patched some Maple shell scripts, so that Maple uses
    the native FreeBSD JDK which I have compiled from the Ports, and now it
    seems to work right.

    When I have fully tested this, I would like to update the FreeBSD
    documentation (the part about Linux emulation), which describes how to
    get Maple running on FreeBSD, and include the patches I've written. How
    should I do this?

    GH 

    -- 
:wq
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