Bad performance on alpha? (make buildworld)

From: Rob B (robbyrnes_at_fastmail.com.au)
Date: 04/08/04

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    Date: Thu, 08 Apr 2004 19:53:10 +1000
To: freebsd-performance@freebsd.org

    >Oliver Lehmann wrote:
    >> Bernd Walter wrote:
    >
    >> On Tue, Feb 24, 2004 at 09:54:57PM +0100, Oliver Lehmann wrote:
    >> > Bernd Walter wrote:
    >> >
    >> > > I think thats around factor 2-4 slower.
    >> > > Especially without having CPUTYPE >=ev56 set.
    >> >
    >> > Ok, I have CPUTYPE=ev56 now set in make.conf and I got slightly better
    >> > results:
    >> >
    >> > make buildworld 19144.53 real 16475.63 user 1964.88 sys
    >> > make -j2 buildworld 19530.91 real 16784.12 user 2143.32 sys
    >> > make -j3 buildworld 19639.32 real 16948.23 user 2173.32 sys
    >> > make -j4 buildworld 19892.68 real 17177.20 user 2202.12 sys
    >> >
    >> > I installed the last buildworld and built a new kernel... let's see
    >> > how those new (with CPUTYPE=56 compiled) binaries are performing...
    >> > *reruning-tests*
    >>
    >> The binaries are only used to build the toolchain.
    >> The remaining part of the buildworld aren't using the system binaries.
    >
    > Hm... actually it performs a _bit_ better with the new world+kernel ;)
    >
    > make buildworld 18749.83 real 16143.33 user 1981.61 sys
    > make buildworld 18758.40 real 16191.54 user 1999.10 sys
    > make -j2 buildworld 19297.45 real 16570.93 user 2127.90 sys
    > make -j2 buildworld <not yet finished>
    >
    > Next I'll try some CFLAGs...

    Oliver, did you ever determine what CFLAGS would be useful, or gain any
    improvement?

    I have used "CFLAGS= -O -pipe -funroll-loops -fforce-mem -fforce-addr\
    -fomit-frame-pointer -ffast-math" but found recently that various
    portions of code in world aren't happy (panics in ldconfig and ispfw.ko
    are two that I recall)

    loop@erwin % uname -a
    FreeBSD erwin.number6 4.9-STABLE FreeBSD 4.9-STABLE #0: Thu Apr 8
    12:55:20 EST 2004

    Cheers,
    Rob

    Please keep me cc'd as I'm not on this list 

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