Bad performance on alpha? (make buildworld)

Oliver Lehmann lehmann at ans-netz.de
Mon Feb 23 10:21:11 PST 2004


Hi,

I run several buildworld's on both, an Alpha EV56 and a Intel PII. I'm
wondering that the Pentium beats the Alpha. Both systems have INVARIANTS*
and WITNESS* disabled. Furthermore, no special tweakups - nearly "out of
the box" configured.

Alpha EV45, 600MHz, single CPU
768MB RAM
UW-SCSI SEAGATE ST34573W 6244
running:  5.2.1-RC2 (15th Feb 2004)
building: 5.2.1-RC2 (15th Feb 2004)


/usr/src ufs, /usr/obj ufs
 make     buildworld    19808.17 real     17126.29 user      1965.42 sys
 make -j2 buildworld    20085.05 real     17314.00 user      2139.92 sys
 make -j3 buildworld    20182.12 real     17467.14 user      2175.41 sys


########################################################################


Intel PII, 333MHz, single CPU
256MB RAM
UDMA33 WDC AC26400R
running:  5.2-CURRENT (20th Feb 2004)
building: 5.2.1-RC2 (15th Feb 2004)


/usr/src ufs, /usr/obj ufs
 make     buildworld    16916.70 real     14185.83 user      2028.82 sys
 make -j2 buildworld    16991.71 real     14445.95 user      2201.29 sys
 make -j3 buildworld    17042.71 real     14532.71 user      2235.48 sys
 make -j4 buildworld    17171.15 real     14583.99 user      2242.81 sys

And I don't think CURRENT is that "faster" than 5.2.1. Why does (my) alpha
performs so bad? Some ideas? Is that behaviour common for FreeBSD/alpha or
did I missed something in my consideration?

-- 
 Oliver Lehmann
  http://www.pofo.de/
  http://wishlist.ans-netz.de/


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