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#16995: 24.3; CPU usage spikes to 100% for minutes at a time Date: Wed, 12 Mar 2014 18:17:04 +0200 Message-ID: <83d2hro0hr.fsf@gnu.org> References: <4744FEC4-6132-4CEE-9CE0-47A0BCBC36D7@beekhof.net> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1394641090 14015 80.91.229.3 (12 Mar 2014 16:18:10 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 12 Mar 2014 16:18:10 +0000 (UTC) Cc: 16995@debbugs.gnu.org To: Andrew Beekhof Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Mar 12 17:18:18 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 1WNlrF-0000JW-KJ for geb-bug-gnu-emacs@m.gmane.org; Wed, 12 Mar 2014 17:18:17 +0100 Original-Received: from localhost ([::1]:33454 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WNlrF-00062I-7T for geb-bug-gnu-emacs@m.gmane.org; Wed, 12 Mar 2014 12:18:17 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:47513) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WNlr6-00060y-TB for bug-gnu-emacs@gnu.org; Wed, 12 Mar 2014 12:18:14 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WNlr0-0007D0-UO for bug-gnu-emacs@gnu.org; Wed, 12 Mar 2014 12:18:08 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:33654) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WNlr0-0007Ce-Qb for bug-gnu-emacs@gnu.org; Wed, 12 Mar 2014 12:18:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1WNlr0-0003jG-HQ for bug-gnu-emacs@gnu.org; Wed, 12 Mar 2014 12:18:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 12 Mar 2014 16:18:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 16995 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 16995-submit@debbugs.gnu.org id=B16995.139464103914272 (code B ref 16995); Wed, 12 Mar 2014 16:18:02 +0000 Original-Received: (at 16995) by debbugs.gnu.org; 12 Mar 2014 16:17:19 +0000 Original-Received: from localhost ([127.0.0.1]:34836 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1WNlqI-0003i7-Rd for submit@debbugs.gnu.org; Wed, 12 Mar 2014 12:17:19 -0400 Original-Received: from mtaout25.012.net.il ([80.179.55.181]:44273) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1WNlqE-0003hr-Qu for 16995@debbugs.gnu.org; Wed, 12 Mar 2014 12:17:16 -0400 Original-Received: from conversion-daemon.mtaout25.012.net.il by mtaout25.012.net.il (HyperSendmail v2007.08) id <0N2B00E00ZMNIN00@mtaout25.012.net.il> for 16995@debbugs.gnu.org; Wed, 12 Mar 2014 18:15:21 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by mtaout25.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0N2B009UAZTLJB50@mtaout25.012.net.il>; Wed, 12 Mar 2014 18:15:21 +0200 (IST) In-reply-to: <4744FEC4-6132-4CEE-9CE0-47A0BCBC36D7@beekhof.net> 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:86777 Archived-At: > From: Andrew Beekhof > Date: Wed, 12 Mar 2014 18:08:27 +1100 > > I've been editing lots of python files in the last few days and noticed > that Emacs has begun locking up for minutes at a time, for no apparent > reason. > > Example actions that can trigger the problem C-s (isearch-forward), > pressing 'y' in response to query-replace prompts, typing, etc. > Whether the buffer is saved or not makes no difference. > > The only thing that really seems to help is switching back to a .c file. > > Is this a known problem? > > Example top output: > > top - 17:44:11 up 29 days, 22:26, 3 users, load average: 0.44, 0.50, 0.42 > Tasks: 236 total, 2 running, 233 sleeping, 0 stopped, 1 zombie > %Cpu(s): 12.6 us, 0.1 sy, 0.0 ni, 87.3 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st > KiB Mem: 7871472 total, 7538448 used, 333024 free, 305676 buffers > KiB Swap: 6029308 total, 731032 used, 5298276 free, 2390156 cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 22971 beekhof 20 0 644976 49236 16308 R 100.1 0.6 19:33.79 emacs > 26689 root 20 0 53020 272 176 S 0.7 0.0 308:17.91 plymouthd > > A random blog suggested the following command might show something of > interest. All I can tell is that thread 1 is quite deep. > > # echo 't a a where' > gdb.cmd; gdb /usr/bin/emacs -p 22971 -x gdb.cmd 2>&1 GNU gdb (GDB) Fedora 7.6.50.20130731-19.fc20 The backtrace you posted indicates that Emacs is in garbage collection. To see if this is indeed the cause of those "lockups", could you please customize garbage-collection-messages to a non-nil value, and then see if every time Emacs locks up there's a message in the echo area announcing GC?