From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#18626: 24.3.94; communication with subprocess is slow Date: Sun, 05 Oct 2014 17:43:27 +0300 Message-ID: <831tqmo9v4.fsf@gnu.org> References: <85wq8ge3gr.fsf@stephe-leake.org> <83oatsgswd.fsf@gnu.org> <858ukuejps.fsf@stephe-leake.org> <85zjdad47f.fsf@stephe-leake.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1412520264 24005 80.91.229.3 (5 Oct 2014 14:44:24 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 5 Oct 2014 14:44:24 +0000 (UTC) Cc: 18626@debbugs.gnu.org To: Stephen Leake Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Oct 05 16:44:17 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Xan2m-0003Yb-88 for geb-bug-gnu-emacs@m.gmane.org; Sun, 05 Oct 2014 16:44:16 +0200 Original-Received: from localhost ([::1]:47667 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xan2l-0005iq-O7 for geb-bug-gnu-emacs@m.gmane.org; Sun, 05 Oct 2014 10:44:15 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39557) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xan2e-0005ij-56 for bug-gnu-emacs@gnu.org; Sun, 05 Oct 2014 10:44:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Xan2Y-0002lg-Pv for bug-gnu-emacs@gnu.org; Sun, 05 Oct 2014 10:44:08 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:43261) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xan2Y-0002lY-MS for bug-gnu-emacs@gnu.org; Sun, 05 Oct 2014 10:44:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Xan2Y-00067p-7S for bug-gnu-emacs@gnu.org; Sun, 05 Oct 2014 10:44:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 05 Oct 2014 14:44:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18626 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 18626-submit@debbugs.gnu.org id=B18626.141252020723488 (code B ref 18626); Sun, 05 Oct 2014 14:44:02 +0000 Original-Received: (at 18626) by debbugs.gnu.org; 5 Oct 2014 14:43:27 +0000 Original-Received: from localhost ([127.0.0.1]:34825 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Xan1y-00066l-I9 for submit@debbugs.gnu.org; Sun, 05 Oct 2014 10:43:27 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:33104) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Xan1v-00066Y-C1 for 18626@debbugs.gnu.org; Sun, 05 Oct 2014 10:43:24 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0NCZ007007EC8300@a-mtaout20.012.net.il> for 18626@debbugs.gnu.org; Sun, 05 Oct 2014 17:43:21 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NCZ007UK7K94B20@a-mtaout20.012.net.il>; Sun, 05 Oct 2014 17:43:21 +0300 (IDT) In-reply-to: <85zjdad47f.fsf@stephe-leake.org> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:94167 Archived-At: > From: Stephen Leake > Cc: 18626@debbugs.gnu.org > Date: Sun, 05 Oct 2014 08:41:08 -0500 > > (find-file "xdisp.c") > (pipe-torture > "/home/Projects/org.emacs.ada-mode.stephe-1/build/wisi/debug_counted" > "4096" "974230") > > 0.344027 > > This is comparable to the time on Windows with a large buffer in the > subprocess. So apparently it is not using the same delay in > send_process. Or the IO system is providing a large buffer. Evidently, subprocess I/O is more efficient on GNU/Linux than it is on Windows. Perhaps this is related to the fact that by default GNU/Linux uses PTYs for that, not pipes. Did you try your experiments with process-connection-type bound to nil?