Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com X-Injected-Via-Gmane: http://gmane.org/ To: cygwin AT cygwin DOT com From: Rolf Campbell Subject: Re: Cygwin signal bandwidth Date: Sun, 09 Feb 2003 14:05:18 -0500 Lines: 18 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet AT main DOT gmane DOT org User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.3a) Gecko/20021212 X-Accept-Language: en-us, en In-Reply-To: Sorry about the multiple posts, I was trying to use gmane and it delayed delivery of my messages for 90 minutes, so I did the naive thing and sent it two more times. -Rolf Rolf Campbell wrote: > While working on a project, I had the need to run a function every > millisecond. So, my first attempt was to fork() and then loop sending a > signal then delaying 1ms. What I found was that a cygwin process can > only recieve about 100 signals/sec before it uses up 100% of the > processor (on a PIII/850MHz). > > Is it reasonable for me to conclude that cygwin uses about 8,000,000 > cycles to process a single signal, or have I done something wrong? > > -Rolf -- 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/