Date: Wed, 13 Sep 2006 09:36:01 +0300 From: Danny Braniss <danny@cs.huji.ac.il> To: freebsd-hackers@freebsd.org Subject: numbers don't lie ... Message-ID: <E1GNOLq-000DC2-1Q@cs1.cs.huji.ac.il>
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Im testing these 2 boxes, Sun X4100 and Dell-2950, and: SUN X4100: Dual Core AMD Opteron(tm) Processor 280 (2393.19-MHz K8-class CPU) one 70g sata disk DELL 2950: Intel(R) Xeon(TM) CPU 3.20GHz (3192.98-MHz K8-class CPU) 4 sata disks + raid0 they both run identical 6.1-STABLE. my 'cpu benchmark' shows the amd being much better than the intel. but, doing a make buildworld give interesting results: dell-2950 : make -j16 TARGET_ARCH=amd64 buildworld : 24m17.41s real 1h3m3.26s user 17m15.07s sys dell-2950 : make -j8 TARGET_ARCH=amd64 buildworld : 24m8.28s real 1h2m59.38s user 16m16.20s sys sunfire : make -j16 TARGET_ARCH=amd64 buildworld : 24m21.38s real 49m6.68s user 14m22.64s sys sunfire : make -j8 TARGET_ARCH=amd64 buildworld : 23m47.69s real 48m53.58s user 13m44.81s sys which probably says something about my 'cpu benchmark' :-( but why is the user time so much different between the boxes? danny
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