Re: 5.3 STABLE kernel compilation oddity

From: Billy Newsom (smartweb_at_leadhill.net)
Date: 01/31/05

  • Next message: Jared Earle: "Re: [HEADS UP] perl symlinks in /usr/bin will be gone" 
    Date: Mon, 31 Jan 2005 09:53:12 -0600
To: freebsd-stable@freebsd.org

    Alex Burke wrote:

    > Hi,
    >
    > I wasnt quite sure what to call this problem.
    >
    > I am running FreeBSD 5.3 STABLE on a quad Pentium Pro IBM Netfinity
    > 7000 system, and since the GENERIC kernel does not come SMP enabled I
    > compiled a kernel with SMP support and drivers for networks card and
    > SCSI RAID adapter built into it (not loaded as modules). This build
    > happens fine under the original GENERIC kernel.
    >
    > Afterwards, since that machine is quite powerful and its destined to
    > be a unix server I wanted to compile a kernel for another box I have.
    > I wrote the kernel config file, and started the compilation. At some
    > stage the system crashed, on the console it looked as though it had
    > tried to reboot itself (3 times!) with various messages about CPUs
    > ignoring requests. I dont really understand why under the SMP kernel I
    > compiled the I cannot compile another kernel, but under GENERIC it
    > works fine.
    >
    > I can only think two things, either I have stumbled accross an odd bug
    > or my hardware appears to be working fine on the surface and actually
    > there is something slightly wrong, although this machine ran the
    > GENERIC kernel of 5.2 for a long time without any issues (5.2.1 was
    > SMP enabled from the start I believe).
    I wish FreeBSD 5.3 was as stable as the STABLE tree implies it was. My SMP
    problems are quite numerous on 5.3 so far.

    I have a similar system to yours, but a dual processor. One thing I see is
    that as the days have gone by since the original 5.3-Release, the SMP code
    has had some code changes that have alternately caused crashes or
    compile-time errors, at least from my point of view. I am beginning to
    regret using 5.3, but all of the press releases nudged me to believe that 5.3
    ws ready for live systems. I have to admit that I had problems with 4.7 and
    4.9, but not like the 5.3-STABLE track. I hope all of this doesn't give
    FreeBSD a bad reputation, although it might earn it if it continues to be so
    buggy for SMP systems. Having no experience with 5.2, I almost wish I could
    provide more advice. But perhaps you can get the generic kernel off the CD
    and boot to it to recompile your kernel.

    See this as one documented example:
    ftp://ftp.freebsd.org/pub/FreeBSD/ERRATA/notices/FreeBSD-EN-05:03.ipi.asc

    My last cvs update was the 30th (yesterday) and it compiled for me using
    make -j6 buildworld and took 3:38. My kernel build took 1:27. Those are
    with a working SMP kernel, so the generic kernel would take longer.
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