From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=BAYES_00, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by dcvr.yhbt.net (Postfix) with ESMTP id 204951F5AE for ; Mon, 3 Aug 2020 15:19:34 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 0F05C120A1F; Tue, 4 Aug 2020 00:19:00 +0900 (JST) Received: from xtrwkhkc.outbound-mail.sendgrid.net (xtrwkhkc.outbound-mail.sendgrid.net [167.89.16.28]) by neon.ruby-lang.org (Postfix) with ESMTPS id 8A431120A1E for ; Tue, 4 Aug 2020 00:18:57 +0900 (JST) Received: by filterdrecv-p3mdw1-7ff865655c-r6gqk with SMTP id filterdrecv-p3mdw1-7ff865655c-r6gqk-19-5F282AFD-82 2020-08-03 15:19:25.499776334 +0000 UTC m=+421391.986737349 Received: from herokuapp.com (unknown) by geopod-ismtpd-4-0 (SG) with ESMTP id mHuzIygiRAGJb2j1hGvEHQ for ; Mon, 03 Aug 2020 15:19:25.421 +0000 (UTC) Date: Mon, 03 Aug 2020 15:19:25 +0000 (UTC) From: fitmap@163.com Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 75284 X-Redmine-Project: ruby-master X-Redmine-Issue-Tracker: Bug X-Redmine-Issue-Id: 17101 X-Redmine-Issue-Author: fitmap X-Redmine-Sender: fitmap X-Mailer: Redmine X-Redmine-Host: bugs.ruby-lang.org X-Redmine-Site: Ruby Issue Tracking System X-Auto-Response-Suppress: All Auto-Submitted: auto-generated X-SG-EID: =?us-ascii?Q?Yw2M8a5f3M0zT7Yd8wx0QAkRqfKHJQmtpo3KaPtGsDbupaV3234kqGyR1h6YFj?= =?us-ascii?Q?H7uPrYm+3r6jUHIpiZMn+p1txnuaNGs7565pGY4?= =?us-ascii?Q?0Vx+edKcr=2FdGZJpE1sVJ5PBYx8EyRUY8sIC7ZSf?= =?us-ascii?Q?vOrDpojTKfEYYNfIxiD+MxO1jWSTX24cGphuH1Q?= =?us-ascii?Q?6c8Npp3GTELsQqjTJgGRnziHBQaAxN8X07w=3D=3D?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 99454 Subject: [ruby-core:99454] [Ruby master Bug#17101] YAML.load_file: Massive slowdown under Ruby 2.7 vs. Ruby 2.4 X-BeenThere: ruby-core@ruby-lang.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: Ruby developers List-Id: Ruby developers List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" Issue #17101 has been reported by fitmap (Justin Peal). ---------------------------------------- Bug #17101: YAML.load_file: Massive slowdown under Ruby 2.7 vs. Ruby 2.4 https://bugs.ruby-lang.org/issues/17101 * Author: fitmap (Justin Peal) * Status: Open * Priority: Normal * ruby -v: ruby 2.7.1p83 (2020-03-31 revision a0c7c23c9c) [x64-mingw32] * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN ---------------------------------------- When use Ruby 2.4, the following program runs fast, After ungrade to Ruby 2.7, the same program runs very very slow. Please unzip the attach first for test. require 'yaml' YAML.load_file('qlnv_h_h.yaml') ---Files-------------------------------- qlnv_h_h.7z (1.41 MB) -- https://bugs.ruby-lang.org/