From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bernard Dautrevaux To: "'cygwin@cygwin.com'" Subject: RE: Optimizing away "ReadFile" calls when Make calls stat() Date: Fri, 16 Feb 2001 09:24:00 -0000 Message-id: <17B78BDF120BD411B70100500422FC6309E208@IIS000> X-SW-Source: 2001-02/msg00990.html > -----Original Message----- > From: Christopher Faylor [ mailto:cgf@redhat.com ] > Sent: Friday, February 16, 2001 6:00 PM > To: Cygwin-L > Subject: Re: Optimizing away "ReadFile" calls when Make calls stat() > > > On Fri, Feb 16, 2001 at 10:59:49AM -0500, Larry Hall (RFK > Partners, Inc) wrote: > >At 04:34 AM 2/16/2001, Warren Young wrote: > >>"Charles S. Wilson" wrote: > >> > > >> > If I were porting an old app from unix to cygwin, and > wanted to tune > >> > performance, I'd much rather do this: > >> > >>Both you and Jonathan have understood my intent perfectly. > >> > >>Christopher, please do consider this proposal. It's easy > to implement > >>-- probably just a few tweaks on Egor's patch -- and it > makes it easy to > >>gain performance with straightforward patches to affected programs. > >>It'd be nice if we can make Cygwin faster, but this proposal has an > >>inherent advantage: the calling process _knows_ what it > wants, whereas > >>Cygwin can only guess or anticipate. > >> > >>Egor, Jonathan, maybe some benchmarks would help convince > Christopher of > >>the patch's utility. > > > >Chris sent some email about this yesterday. He's looking at > the possibility > >of eliminating this problem without changing the API. > > Nice to see that *someone* is paying attention. I, for one, is more than just paying attention; I just wondered if it was worthless to add some traffic to an already quite long thread. I' REALLY waiting to see your solution; I myself expose my ideas on how to do that, but I trust you to have found a solution a lot better than mine :-) Thanks in advance for the good work, Berrnard -------------------------------------------- Bernard Dautrevaux Microprocess Ingenierie 97 bis, rue de Colombes 92400 COURBEVOIE FRANCE Tel: +33 (0) 1 47 68 80 80 Fax: +33 (0) 1 47 88 97 85 e-mail: dautrevaux@microprocess.com b.dautrevaux@usa.net -------------------------------------------- -- Want to unsubscribe from this list? Check out: http://cygwin.com/ml/#unsubscribe-simple