X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:message-id:from:to:subject:date:mime-version :content-type:content-transfer-encoding; q=dns; s=default; b=d52 OQa1m+YrpvzyKjSaWD2J9KJObh8XyadB01papCoMM0Imwj98T5Lf8VUNu7gfxwi8 NEQ+XUkTeSQ1Y82MGAQDRgZHXz2TB3Lf2Sla8vkW6fcPv8tH04e6oijzFzQgPb3Q Lvqa2hIby1kVOe4SDHkD5lSFgKcUmGk0uIbqL5C0= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:message-id:from:to:subject:date:mime-version :content-type:content-transfer-encoding; s=default; bh=hH0WIhEsx GEAVHR4OtnK0aR3wiY=; b=ZzIIt1UGkYRKsxMOJChEc7uOcRZmu9OpuFqvp81EP eGPYEscd1HID68zc9wt4DviZxvlrJZORKUYv10ZjQFAWUAy+PF4HlVgrWUi7uIos jbaY7y58reIoAsh3t1YqKM7cTBR1j/s8aSeMHQsrjZ28sWA6rVVVvX21OPVYPeMH RQ= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: 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 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.2 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=ham version=3.3.2 X-HELO: BLU004-OMC1S33.hotmail.com X-TMN: [PWhXGdcYqu1PaOeN+9p43eNQIgSOj/ic] Message-ID: From: Ivan Todoroski To: "'Cygwin list'" Subject: Notable performance improvement in 64-bit build Date: Wed, 12 Nov 2014 00:52:21 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hello everyone, I'm just curious, has there been any special focus on performance improvements in the 64-bit version compared to 32-bit? I'm asking because I recently upgraded from 32-bit to 64-bit Cygwin, and I noticed that my bash prompt would show up noticeably quicker when I opened a new Cygwin shell (I have a rather complicated ~/.profile script, so the delay is actually visible to the eye). At first I thought it was just some sort of placebo effect and I was imagining it, but the effect seemed so persistent that I just had to perform some measurements. What I found was that under 32-bit Cygwin my ~/.profile script is executed in 507ms (average of 30 runs), but under 64-bit Cygwin the exact same script gets executed in 376ms (again, 30-run average). Both measurements were done on the same machine with 32-bit and 64-bit Cygwin installed side by side (both freshly updated to their latest respective versions). That's a whopping 33% performance improvement! So I was just curious if anyone had any speculations on what exactly might have caused this performance increase. :) In any case, kudos to the Cygwin developers, great job on the 64-bit build! -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple