lkml.org 
[lkml]   [2000]   [Jan]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRE: Memory/cpu problem with Asus K7M motherboard/Athlon 750
    Date
    First, there is a known incompatibility between Linux 2.2.x & many ACPI
    bioses. The first thing I would check is to see if ACPI is enabled on your
    750 & disabled on the 650. For 2.2.x, you might try disabling ACPI in the
    bios & see if this fixes the 64M limit.

    Depending upon you situation, you might try the latest 2.3.x kernel. There
    are a number of improvements which the Athlon will be able to showcase.

    Have you tried swapping the hard drives and/or controllers? That is the
    other variable I see. If disabling ACPI does not fix the problem, I would
    be VERY interested in knowning (offline) if the problem follows the HD or
    controller, as it is possible that you are uncovering some sort of
    compatibility issue--assuming you have tried a reinstall of the OS.

    Nathan



    -----Original Message-----
    From: Mark Steele [mailto:msteele@belent.com]
    Sent: Tuesday, January 25, 2000 12:16 PM
    To: linux-kernel@vger.rutgers.edu
    Subject: Memory/cpu problem with Asus K7M motherboard/Athlon 750


    Hi there,

    I've setup two servers with almost identical hardware, and identical
    software. I've noticed a few problems which I haven't been able to
    resolve. (if I'm not sending this to the right mailing list, please let me
    know,
    I've tried the comp.os.linux.hardware newsgroup, and nobody
    has been able to answer my questions).

    Server #1:
    AMD Athlon 750
    Asus K7M motherboard
    512 Megs of 3.3 volt ECC SDRAM
    3COM 3c905 ethernet card
    Slackware 7
    Kernel 2.2.14
    Seagate ULTRA WIDE SCSI 2 LVD 9 Gig Cheetah, 80megs/second
    glibc 2.1.2
    egcs
    etc..

    Server #2:
    AMD Athlon 650
    Asus K7M motherboard
    512 Megs of 3.3 volt ECC SDRAM
    3COM 3c905 ethernet card
    Slackware 7
    Kernel 2.2.14
    Maxtor ATLAS 10k ULTRA WIDE SCSI 40megs/second
    glibc 2.1.2
    egcs
    etc.


    As you can see, these are basically identical setup except for the
    CPU. First thing to point out, is that both mainboards are using the
    same BIOS version. I have also tried to use an updated BIOS
    from Asus (release 12/29/99) with the same results.

    Server #1 detects 512 megs of ram on bootup (BIOS), but
    linux can only see 64 megs of ram unless I specify mem=512M
    in the lilo configuration.

    Server #2 detects 512 megs of ram on bootup, and linux
    detects all the ram without extra parameters.

    Server #1 is incredibly slow. Although it's got a faster processor and
    a faster hard disk, it performs horribly compared to Server #2. Here's
    an example of timing compilation of kernel 2.2.14 using:
    time make bzImage
    (after both kernels are configured identically and both servers are
    idle with a load of 0.01)
    Server #1
    real 18m10.465s
    user 16m52.590s
    sys 1m3.790s
    # free
    total used free shared buffers cached
    Mem 517540 306128 211412 16788 138436 145476
    -/+ buffers/cache: 22216 495324
    Swap: 265032 0 265032
    # cat /proc/cpuinfo
    processor : 0
    vendor_id : AuthenticAMD
    cpu family : 6
    model : 2
    model name : AMD Athlon(tm) Processor
    stepping : 1
    cpu MHz : 755.315128
    cache size : 512 KB
    fdiv_bug : no
    hlt_bug : no
    sep_bug : no
    f00f_bug : no
    coma_bug : no
    fpu : yes
    fpu_exception : yes
    cpuid level : 1
    wp : yes
    flags : fpu vme de pse tsc msr 6 mce cx8 sep mtrr pge 14
    cmov fcmov 17 22 mmx 24 30 3dnow
    bogomips : 752.03

    Server #2
    real 2m42.281s
    user 2m13.650s
    sys 0m13.760s
    # free
    total used free shared buffers
    cached
    Mem: 517488 426344 91144 51512 140992
    220848
    -/+ buffers/cache: 64504 452984
    Swap: 104384 0 104384
    # cat /proc/cpuinfo
    processor : 0
    vendor_id : AuthenticAMD
    cpu family : 6
    model : 1
    model name : AMD-K7(tm) Processor
    stepping : 2
    cpu MHz : 654.599184
    cache size : 512 KB
    fdiv_bug : no
    hlt_bug : no
    sep_bug : no
    f00f_bug : no
    coma_bug : no
    fpu : yes
    fpu_exception : yes
    cpuid level : 1
    wp : yes
    flags : fpu vme de pse tsc msr 6 mce cx8 sep mtrr pge 14
    cmov fcmov 22 mmx 30 3dnow
    bogomips : 652.08


    Yes folks, the 750 was 16 minutes slower in compiling the kernel.
    What's going on here? I haven't been able to figure it out. My guess
    is that it's some kind of memory problem, but I'm completely baffled.
    Any suggestions on how to fix this would be greatly appreciated.

    If you've encountered this problem before and know how to fix it,
    please email.

    Mark Steele
    Systems Adminitrator
    Belmont Web Services
    msteele@belent.com



    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.rutgers.edu
    Please read the FAQ at http://www.tux.org/lkml/

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.rutgers.edu
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:56    [W:3.370 / U:0.012 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site