From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Konstantin Kharlamov Newsgroups: gmane.emacs.bugs Subject: bug#45200: [PATCH] Force Glibc to free the memory freed Date: Tue, 26 Jan 2021 01:28:01 +0300 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="30979"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Evolution 3.38.3 Cc: monnier@iro.umontreal.ca, 45200@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Jan 25 23:29:11 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1l4AMB-0007w9-5A for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 25 Jan 2021 23:29:11 +0100 Original-Received: from localhost ([::1]:35530 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l4AM9-0007F4-MB for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 25 Jan 2021 17:29:09 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58306) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l4AM2-0007EL-HB for bug-gnu-emacs@gnu.org; Mon, 25 Jan 2021 17:29:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:56960) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1l4AM2-0001jP-8v for bug-gnu-emacs@gnu.org; Mon, 25 Jan 2021 17:29:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1l4AM2-00033h-4X for bug-gnu-emacs@gnu.org; Mon, 25 Jan 2021 17:29:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Konstantin Kharlamov Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 25 Jan 2021 22:29:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 45200 X-GNU-PR-Package: emacs Original-Received: via spool by 45200-submit@debbugs.gnu.org id=B45200.161161369111701 (code B ref 45200); Mon, 25 Jan 2021 22:29:02 +0000 Original-Received: (at 45200) by debbugs.gnu.org; 25 Jan 2021 22:28:11 +0000 Original-Received: from localhost ([127.0.0.1]:40273 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1l4ALD-00032f-Cx for submit@debbugs.gnu.org; Mon, 25 Jan 2021 17:28:11 -0500 Original-Received: from forward103o.mail.yandex.net ([37.140.190.177]:43691) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1l4ALB-00032Q-Nz for 45200@debbugs.gnu.org; Mon, 25 Jan 2021 17:28:10 -0500 Original-Received: from myt5-89d0765c5c65.qloud-c.yandex.net (myt5-89d0765c5c65.qloud-c.yandex.net [IPv6:2a02:6b8:c12:3e1f:0:640:89d0:765c]) by forward103o.mail.yandex.net (Yandex) with ESMTP id 1739C5F8143F; Tue, 26 Jan 2021 01:28:03 +0300 (MSK) Original-Received: from myt6-016ca1315a73.qloud-c.yandex.net (myt6-016ca1315a73.qloud-c.yandex.net [2a02:6b8:c12:4e0e:0:640:16c:a131]) by myt5-89d0765c5c65.qloud-c.yandex.net (mxback/Yandex) with ESMTP id dfxNVCLwcf-S2GiwwO8; Tue, 26 Jan 2021 01:28:03 +0300 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1611613683; bh=QloOjdXFwtmNfZvGv58YywFTSj55xekC3unwjLSVW7s=; h=In-Reply-To:Cc:To:From:Subject:Message-ID:References:Date; b=nCliLCXNSgH4pKDsLr9KuiCKLYRhoNXoQUFckh/mQTljxl9z5NPqKBavspJutAAIT E8e4qf6smuLaaWQWJLgEGoyQK0u4B37JmxYYmdAeVLMb1CDVAGoS22RHyoPpHpg9YN bBLFqgWg2zwH1ehi4rAvGwtmwzIo6flrM8RsW9qY= Authentication-Results: myt5-89d0765c5c65.qloud-c.yandex.net; dkim=pass header.i=@yandex.ru Original-Received: by myt6-016ca1315a73.qloud-c.yandex.net (smtp/Yandex) with ESMTPSA id uCYM5eBz4z-S1JGJPFD; Tue, 26 Jan 2021 01:28:01 +0300 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client certificate not present) In-Reply-To: X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:198592 Archived-At: On Mon, 2021-01-25 at 17:17 -0500, DJ Delorie wrote: > Eli Zaretskii writes: > > Thanks, but is it really a good idea to call malloc_trim each time we > > free some chunk of memory? > > malloc_trim() is very expensive relative to free(), partly because of > what it needs to do, and partly because it flushes the fastbins cache. > If you call it every, say, 1000 iterations of free, that might suffice. > Or perhaps after each GC run. (un-ccing Glibc maintainers as this question is Emacs-specific) After a GC run, would that be at the end of `garbage_collect` function as Stefan mentioned?