Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT sources DOT redhat DOT com Delivered-To: mailing list cygwin AT sources DOT redhat DOT com Message-Id: <4.3.2.7.0.20001013184237.00b6cd70@pop.bresnanlink.net> X-Sender: cabbey AT pop DOT bresnanlink DOT net X-Mailer: QUALCOMM Windows Eudora Version 4.3.2 Date: Fri, 13 Oct 2000 18:51:59 -0500 To: cygwin AT sourceware DOT cygnus DOT com From: Chris Abbey Subject: Re: Cygwin Performance Info In-Reply-To: <39E7997E.242E9C9A@SunyataSystems.Com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed At 19:23 10/13/00 -0400, Laurence F. Wood wrote: >Can someone tell me where the performance hit is in cygwin unix >emulation? whichever part you use the most inside your tightest inner loop. seriously. that's a big huge open ended question (not about cygwin, about ANY library/platform) that is as specific to your application as you can get. For example, if you spend 75% of your computing day manipulating text files and piping them and greping them and running file utils against them then the cr/lf translation may be a big hit for you. On the otherhand if most of your computation in a day is spent answering requests that come in on tcp/ip sockets then the remapping of winsock to netinet.h functions maybe your major headache. (note, I'm not trying to imply that either function has a performance problem, merely that they would be representative places that would have high invocation counts in the course of the given activity.) To really answer that for your application/workload then you need to get some form of performance detailing that can tell you how much time you are spending in any given method and how often it's called. -- Want to unsubscribe from this list? Send a message to cygwin-unsubscribe AT sourceware DOT cygnus DOT com