Date: Sun, 20 Jan 2002 15:28:34 +1100 From: "Duraid Madina" <duraid@fl.net.au> To: <freebsd-hackers@freebsd.org> Subject: Insane performance regression? Message-ID: <000001c1a16a$ec95cc50$022a17ac@simplex>
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Hi all, I have a CPU-bound (well, 'malloc-bound' ;) program which takes about 20 seconds to run on a 'fast' PC (Pentium3-1000, Athlon XP1600 etc) - the source is available as http://www.idesign.fl.net.au/malloc_pain/malloc_pain.tar.gz (NOTE: you *will* need GCC 3 (or more recent) to compile it). At any rate, I did the cvsup/buildkernel/buildworld thing this morning (I'm running 5-CURRENT on an SMP box), and now that same program takes about half an hour to run, rather than 20 seconds. Curiously, it reports about 20% system time (whereas previously there was negligible system time) Any idea what might be going on? Duraid P.S. to run it: gcc -c mt19937b-int.c g++ Graph.cpp mt19937b-int.o ./a.out Known to compile okay with GCC 3.0.3 and 3.1 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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