From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Speedup of functions to en/decode UTF-8 text Date: Sat, 23 Nov 2019 20:49:46 +0200 Message-ID: <83imnatol1.fsf@gnu.org> References: <83d0djue4q.fsf@gnu.org> <68de517e-8ba3-4bc5-985d-aeb894595658@yandex.ru> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="88004"; mail-complaints-to="usenet@blaine.gmane.org" Cc: emacs-devel@gnu.org, yyoncho@gmail.com, joaotavora@gmail.com To: Dmitry Gutov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Nov 23 19:50:31 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iYaUH-000MkS-V4 for ged-emacs-devel@m.gmane.org; Sat, 23 Nov 2019 19:50:30 +0100 Original-Received: from localhost ([::1]:60590 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iYaUG-0001yM-Jo for ged-emacs-devel@m.gmane.org; Sat, 23 Nov 2019 13:50:28 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:44701) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iYaU0-0001y1-UA for emacs-devel@gnu.org; Sat, 23 Nov 2019 13:50:13 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:35401) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iYaU0-00018S-Gy; Sat, 23 Nov 2019 13:50:12 -0500 Original-Received: from [176.228.60.248] (port=3333 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1iYaTt-00027K-AY; Sat, 23 Nov 2019 13:50:08 -0500 In-reply-to: <68de517e-8ba3-4bc5-985d-aeb894595658@yandex.ru> (message from Dmitry Gutov on Sat, 23 Nov 2019 20:42:09 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:242658 Archived-At: > Cc: emacs-devel@gnu.org > From: Dmitry Gutov > Date: Sat, 23 Nov 2019 20:42:09 +0200 > > On 23.11.2019 11:37, Eli Zaretskii wrote: > > I've made some changes in the functions that encode and decode UTF-8 > > text in an optimized fashion. This is expected to speed up JSON > > handling. Some preliminary benchmarking of the decoding function > > indicates speed improvements starting at modest 30-40%, and sometimes > > much higher -- tenfold or more. I'm not sure how this will fare in > > the real-life handling of JSON objects > > This is great. But were those 30-40% improvements in tests with strings > or JSON decoding? With JSON decoding. But I have a very small sample of that. > I tested two old examples, and the difference is <10% (like 0.78s down > to 0.73s in the best case). Which is still welcome, of course. As long as it's faster, I'm okay ;-) Thanks for testing.