Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Subject: Slow FORTRAN formatted output using cygwin 1.5.xx Date: Fri, 29 Apr 2005 16:26:55 +0200 Message-ID: <45C1A052D4EE624FA64275E179096BAA26E80C@ALRMMX01.rm.aleniaspazio.it> From: "Impagnatiello Fabrizio" To: Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id j3TEOI5P019600 I wrote lot of FORTRAN programs using massive formatted file outputs. When passed from 1.3.22 (one of last 1.3.xx) to 1.5.xx (all tested), the writing/reading performance of relevant SW modules slowed down to few % of before experienced performance (typically 20-30 times worse). When compiling the same code with -mno-cygwin, the performance increases again. Then, there are some cygwin1.dll entry points for IO functions that have been either strongly damaged or unoptimised ?? Thanks -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/