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 Date: Wed, 27 Nov 2002 18:36:24 -0500 From: Christopher Faylor To: cygwin@cygwin.com Subject: Re: pipe performance problem Message-ID: <20021127233624.GK17798@redhat.com> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <20021122210856.GA10679@redhat.com> <777770015.20021122040845@huno.net> <007301c291ff$eb9ce050$78d96f83@pomello> <21545718.20021122114035@huno.net> <12415481703.20021122220059@huno.net> <20021122210856.GA10679@redhat.com> <5.1.0.14.2.20021122143402.00fdc148@pop3.cris.com> <10824453046.20021123003030@huno.net> <14936170000.20021127223905@huno.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <14936170000.20021127223905@huno.net> User-Agent: Mutt/1.5.1i On Wed, Nov 27, 2002 at 10:39:05PM +0100, thomas wrote: >10 ms delay, and there's many of them. Exactly every 612 lines or every >34816 bytes (34kb). Which is about 210 seconds delay on a 700MB file. If there is no data in a pipe it can wait for 10ms waiting for it, yes. See ready_for_read/peek_pipe in select.cc. cgf -- Please do not send me personal email with cygwin questions or observations. Use the resources at http://cygwin.com/ . -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/