From owner-freebsd-hackers Sat Jan 19 20:28:50 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from delenn.fl.net.au (int-mail.syd.fl.net.au [202.181.0.28]) by hub.freebsd.org (Postfix) with ESMTP id A0E3F37B419 for ; Sat, 19 Jan 2002 20:28:36 -0800 (PST) Received: from simplex (CPE-144-137-78-42.nsw.bigpond.net.au [144.137.78.42]) by delenn.fl.net.au (Postfix) with ESMTP id 195B117FBDC for ; Sun, 20 Jan 2002 15:28:36 +1100 (EST) From: "Duraid Madina" To: Subject: Insane performance regression? Date: Sun, 20 Jan 2002 15:28:34 +1100 Message-ID: <000001c1a16a$ec95cc50$022a17ac@simplex> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2616 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG 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