From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 30323 invoked by alias); 13 Jul 2012 12:39:20 -0000 Received: (qmail 30304 invoked by uid 22791); 13 Jul 2012 12:39:19 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 13 Jul 2012 12:39:06 +0000 From: "kapojko at yahoo dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/53950] 1.5 times slowdown from 4.4.0 to 4.7.0 Date: Fri, 13 Jul 2012 12:39:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: fortran X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: kapojko at yahoo dot com X-Bugzilla-Status: WAITING X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2012-07/txt/msg01048.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53950 --- Comment #4 from Yury Kapoyko 2012-07-13 12:39:05 UTC --- I agree with you. This buf refers to mingw, I think, it could be closed. Unfortunately, real application slows down to 30 times! But it's very hard to "extract" bug from there because it is rather complicated and multi-threaded. Also I have no profilers for Windows except gprof which is useless here. Compiled on Fedora (GCC 4.6.3) application works fine. I assume that the problem is with libgfortran, because if I run old application (compiled with GCC 4.4.0), but with new gfortran.dll in PATH it works exactly as bad, as new one.