From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Kangas Newsgroups: gmane.emacs.bugs Subject: bug#24756: 26.0.50; Emacs should not use pselect Date: Sun, 29 Sep 2019 06:02:56 +0200 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="169090"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 24756-done@debbugs.gnu.org To: Philipp Stephani Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Sep 29 06:04:17 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 (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iEQRT-000hqs-DU for geb-bug-gnu-emacs@m.gmane.org; Sun, 29 Sep 2019 06:04:15 +0200 Original-Received: from localhost ([::1]:36616 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iEQRR-0001sm-L7 for geb-bug-gnu-emacs@m.gmane.org; Sun, 29 Sep 2019 00:04:13 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:37530) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iEQRH-0001sS-Al for bug-gnu-emacs@gnu.org; Sun, 29 Sep 2019 00:04:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iEQRG-00028p-9c for bug-gnu-emacs@gnu.org; Sun, 29 Sep 2019 00:04:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:43076) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iEQRG-00028f-6m for bug-gnu-emacs@gnu.org; Sun, 29 Sep 2019 00:04:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iEQRG-0003Lb-0t for bug-gnu-emacs@gnu.org; Sun, 29 Sep 2019 00:04:02 -0400 In-Reply-To: Resent-From: Stefan Kangas Original-Sender: "Debbugs-submit" Resent-To: bug-gnu-emacs@gnu.org Resent-Date: Sun, 29 Sep 2019 04:04:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: cc-closed 24756 X-GNU-PR-Package: emacs Mail-Followup-To: 24756@debbugs.gnu.org, stefan@marxist.se, p.stephani2@gmail.com Original-Received: via spool by 24756-done@debbugs.gnu.org id=D24756.156972979412791 (code D ref 24756); Sun, 29 Sep 2019 04:04:01 +0000 Original-Received: (at 24756-done) by debbugs.gnu.org; 29 Sep 2019 04:03:14 +0000 Original-Received: from localhost ([127.0.0.1]:51895 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iEQQU-0003KE-Gz for submit@debbugs.gnu.org; Sun, 29 Sep 2019 00:03:14 -0400 Original-Received: from mail-pg1-f172.google.com ([209.85.215.172]:34924) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iEQQT-0003Jw-Bg for 24756-done@debbugs.gnu.org; Sun, 29 Sep 2019 00:03:13 -0400 Original-Received: by mail-pg1-f172.google.com with SMTP id a24so5488368pgj.2 for <24756-done@debbugs.gnu.org>; Sat, 28 Sep 2019 21:03:13 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=/+Lcdso9DQWuqBNvRCZYW2JvcHMLb8W/fGVgL9L88Z8=; b=Y4tV7UWHyrFusLRFZrKeH8AKCU7EEEQA/836cRdqthnq8dExMP0cipVjbDH3JgTxhR iyaGe5fsC8c6+8V8MRY55pEinN6Xly0B4g3vhGapQmSnL3rr4m0Qcg3NQKRlYNiyEsN6 wbshN0mEwaK0nB1RzCERL3OKNdZ6OipcJh5dn44+7kHkiHSQ/MuibugEGpxSI9zwGrYG tNxLDu3JUmo/mh6+OnldK1QSfDLTFb0vdRabAfg+PkZJ/cWXJ3gT9oZzaqkM0W14klPg Qoz+PHQKTjr7cF1dXUjzkFNeA0Qubmbil9qVYZMRGr6QtEvKCEMJ9rMvZpedqSwsp3Hq /0HQ== X-Gm-Message-State: APjAAAW6bQuBMiwhmu6yxqZx/ePpYeeSuslWCKodsKCOkkgEccC/6zhR 8slaQx3oy1g93iD2cT8+8MTmDicEDNiJR550PRo= X-Google-Smtp-Source: APXvYqy0+Miyya+F5cf3Of6tMb/eIEdt0EE/CitAkRFeg4h3iJeoXMhIWHsW3PNVPDbfRLjEcWeSJHOOGRkxNRKz6ps= X-Received: by 2002:a17:90a:cc08:: with SMTP id b8mr19404261pju.119.1569729787474; Sat, 28 Sep 2019 21:03:07 -0700 (PDT) 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:167586 Archived-At: Philipp Stephani writes: > Philipp Stephani schrieb am Fr., 21. Okt. 2016 um 17:42 Uhr: > > Emacs uses pselect for IO multiplexing, limiting the number of available > file descriptors to FD_SETSIZE. Rather, epoll/kqueue should be used, if > available. > > Some good counter-arguments were brought up: > - pselect is in the POSIX standard, whereas the possible replacements (ppoll/epoll/kqueue) are not. > - The file descriptor limit should only be hit in pathological cases, e.g. when leaking background processes, and is only a symptom of a bug somewhere else. A higher FD limit would only hide the symptom, but not fix the underlying root cause. > > Given that, I'm no longer convinced that switching away from pselect would be a good idea (but I'll leave this bug open for now to provide a space for discussion). That was three years ago, and no such discussion has taken place here. If there is a continued need to discuss this, perhaps it's better to take it to emacs-devel. I'm therefore closing this bug report. If anyone disagrees, they should feel free to reopen. Best regards, Stefan Kangas