Stable Worldstones - Intel P4 vs AMD

From: Kim Culhan (w8hdkim_at_gmail.com)
Date: 11/27/05

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    Date: Sun, 27 Nov 2005 14:35:01 -0500
To: stable@FreeBSD.org

    Running -Stable make world with recent Intel and AMD hardware
    yielded some interesting results.

    One machine:

    CPU: AMD Athlon(tm) 64 Processor 3200+ (2010.31-MHz 686-class CPU)
    Origin = "AuthenticAMD" Id = 0x20ff0 Stepping = 0

    Other machine:

    CPU: Intel(R) Pentium(R) 4 CPU 3.60GHz (3600.12-MHz 686-class CPU)
    Origin = "GenuineIntel" Id = 0xf34 Stepping = 4

    The Intel machine had hyperthreading disabled in the bios.

    kernel config for both machines was GENERIC

    Running 'make world' several times on FreeBSD 6.0-STABLE from
    11-26-05 a couple of representative timings were:

    AMD Athlon 64

    45:42

    45:19

    Intel P4

    55:22

    54:57

    Are there any optimizations for the P4 which might be added to the GENERIC
    kernel config to improve the performance ?

    -kim 

    --
w8hdkim err gmail.com
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