Date: Wed, 3 Sep 1997 00:51:01 +0300 From: Antti-Pekka Liedes <apl@mail.cs.hut.fi> To: freebsd-smp@freebsd.org Subject: SMP performance on P5 systems? Message-ID: <19970903005101.00664@hutcs.cs.hut.fi>
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The current SMP performance on my Tyan Tomcat IIID dual pentium 200MMX system is not quite what I had expected, as a simple benchmark, this is what it takes for me to compile kernel, with UP kernel: make -j3 283.19s user 32.56s system 94% cpu 5:32.83 total and with SMP: make -j3 341.23s user 134.72s system 183% cpu 4:18.80 total I was expecting the wall clock time to be less for the SMP kernel, also, there seems to be quite a lot of system overhead :-/. Of course this might be because of my relatively slow disks (I use striping on two Quantum Fireballs, both on different channel of my AHA-3940U). The benchmarks at www.freebsd.org SMP pages show a lot better performance. Is it just that ppro beats pentium so much on SMP or what? -- Antti-Pekka Liedes * apl@IRC * In two hells there's JMT 6 B 406 * apl@iki.fi * one hell too many 02150 ESPOO * apl@apocalypse.tky.hut.fi * - Lucifer +358 - 9 - 468 3121 * +358 - 40 - 5873 593 * (in God's Army)
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