From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Jason Rumney Newsgroups: gmane.emacs.devel Subject: Re: font-backend Date: Sat, 23 Feb 2008 02:23:26 +0000 Message-ID: <47BF839E.1010402@gnu.org> References: <8463wrm4ls.fsf@gmail.com> <47B55785.8030802@gnu.org> <47B607C6.20601@gnu.org> <47B61D6A.3070004@gnu.org> <878x1lye80.fsf@catnip.gol.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1203733425 15409 80.91.229.12 (23 Feb 2008 02:23:45 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 23 Feb 2008 02:23:45 +0000 (UTC) Cc: finalpatch , emacs-devel@gnu.org To: YAMAMOTO Mitsuharu Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Feb 23 03:24:10 2008 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1JSk3e-0001cU-6N for ged-emacs-devel@m.gmane.org; Sat, 23 Feb 2008 03:24:10 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JSk38-0007Lb-5s for ged-emacs-devel@m.gmane.org; Fri, 22 Feb 2008 21:23:38 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1JSk33-0007IG-99 for emacs-devel@gnu.org; Fri, 22 Feb 2008 21:23:33 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1JSk31-0007Eh-BD for emacs-devel@gnu.org; Fri, 22 Feb 2008 21:23:32 -0500 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JSk31-0007EE-5j for emacs-devel@gnu.org; Fri, 22 Feb 2008 21:23:31 -0500 Original-Received: from mk-outboundfilter-4.mail.uk.tiscali.com ([212.74.114.32]) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1JSk30-0001me-OW for emacs-devel@gnu.org; Fri, 22 Feb 2008 21:23:30 -0500 Original-X-Trace: 11668163/mk-outboundfilter-2.mail.uk.tiscali.com/F2S/$ACCEPTED/freedom2Surf-customers/83.67.23.108 X-SBRS: None X-RemoteIP: 83.67.23.108 X-IP-MAIL-FROM: jasonr@gnu.org X-IP-BHB: Once X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgAAAJASv0dTQxds/2dsb2JhbAAIrkA X-IronPort-AV: E=McAfee;i="5200,2160,5236"; a="11668163" X-IronPort-AV: E=Sophos;i="4.25,393,1199664000"; d="scan'208";a="11668163" X-IP-Direction: OUT Original-Received: from i-83-67-23-108.freedom2surf.net (HELO [127.0.0.1]) ([83.67.23.108]) by smtp.f2s.tiscali.co.uk with ESMTP/TLS/DHE-RSA-AES256-SHA; 23 Feb 2008 02:23:29 +0000 User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) In-Reply-To: X-detected-kernel: by monty-python.gnu.org: Genre and OS details not recognized. X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:90085 Archived-At: YAMAMOTO Mitsuharu wrote: > I'm developing a font backend driver using Core Text, which is a new > framework available from Mac OS X 10.5. It was slower than Emacs 22 > first, but now it shows good performance with caching the results of > metrics calculations. > Yes, it is definitely the metrics calculations that are slowing things down on Windows too. I added some code to cache the metrics for ASCII characters some time ago, but the problem remains for buffers containing many non-ASCII characters.