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.bugs Subject: bug#31138: Native json slower than json.el Date: Tue, 16 Apr 2019 18:13:53 +0300 Message-ID: <83d0lmgez2.fsf@gnu.org> References: <87sh806xwa.fsf@chapu.is> <83tvftne0j.fsf@gnu.org> <40DA9396-044E-4D00-946E-42B776B51BFA@gnu.org> <83r2awnw0w.fsf@gnu.org> <83d0mgnn31.fsf@gnu.org> <835zs7och6.fsf@gnu.org> <83tvfqnbxc.fsf@gnu.org> <83lg12n75s.fsf@gnu.org> <83h8bqn2ik.fsf@gnu.org> <83zhphliil.fsf@gnu.org> <181b93a3-3861-0481-1b95-8344410d1049@yandex.ru> <83r2a2hdxn.fsf@gnu.org> <21f68973-a684-2a65-82eb-c8f3df90127f@yandex.ru> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="84843"; mail-complaints-to="usenet@blaine.gmane.org" Cc: sebastien@chapu.is, yyoncho@gmail.com, 31138@debbugs.gnu.org To: Dmitry Gutov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Apr 16 17:15:13 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hGPnl-000Lui-BF for geb-bug-gnu-emacs@m.gmane.org; Tue, 16 Apr 2019 17:15:13 +0200 Original-Received: from localhost ([127.0.0.1]:38238 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hGPnh-0003W4-9z for geb-bug-gnu-emacs@m.gmane.org; Tue, 16 Apr 2019 11:15:09 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:36805) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hGPnb-0003Vr-70 for bug-gnu-emacs@gnu.org; Tue, 16 Apr 2019 11:15:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hGPna-00058o-CV for bug-gnu-emacs@gnu.org; Tue, 16 Apr 2019 11:15:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:52400) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hGPna-000580-4m for bug-gnu-emacs@gnu.org; Tue, 16 Apr 2019 11:15:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hGPnZ-0002ce-Op for bug-gnu-emacs@gnu.org; Tue, 16 Apr 2019 11:15:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 16 Apr 2019 15:15:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 31138 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 31138-submit@debbugs.gnu.org id=B31138.15554276499995 (code B ref 31138); Tue, 16 Apr 2019 15:15:01 +0000 Original-Received: (at 31138) by debbugs.gnu.org; 16 Apr 2019 15:14:09 +0000 Original-Received: from localhost ([127.0.0.1]:37711 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hGPmi-0002b7-FE for submit@debbugs.gnu.org; Tue, 16 Apr 2019 11:14:08 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:50560) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hGPmg-0002ag-7s for 31138@debbugs.gnu.org; Tue, 16 Apr 2019 11:14:06 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:50530) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hGPmZ-0003qW-Pa; Tue, 16 Apr 2019 11:14:00 -0400 Original-Received: from [176.228.60.248] (port=2923 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1hGPmZ-0005kn-71; Tue, 16 Apr 2019 11:13:59 -0400 In-reply-to: <21f68973-a684-2a65-82eb-c8f3df90127f@yandex.ru> (message from Dmitry Gutov on Tue, 16 Apr 2019 16:50:58 +0300) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:157721 Archived-At: > Cc: sebastien@chapu.is, yyoncho@gmail.com, 31138@debbugs.gnu.org > From: Dmitry Gutov > Date: Tue, 16 Apr 2019 16:50:58 +0300 > > All right, my test script and results are attached. Here's how I run it: > > sudo perf record -F 99 src/emacs -Q --batch -l ~/examples/elisp/json-test.el > sudo perf report -n --stdio > perf-report.txt Thanks. I think we need to run this with a larger JSON, or maybe run it several times in a loop. Because there were too few samples in this run, so we might see a biased picture due to overhead of stuff that is done only once. Also, please set gc-cons-threshold and gc-cons-percentage to very large values, to prevent GC from biasing the profile even more. > If you have certain recording or output format preferences, please let > me know. The ASCII format is fine. Was this an optimized build of Emacs or an unoptimized one?