From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Suhail Singh Newsgroups: gmane.emacs.bugs Subject: bug#73046: 29.4; Emacs 100% CPU usage for several seconds when opening dired buffer over TRAMP Date: Fri, 06 Sep 2024 11:52:19 -0400 Message-ID: <8734mchj9o.fsf@gmail.com> References: <87o75241qh.fsf@gmail.com> <86plpi2ixa.fsf@gnu.org> <87seudke20.fsf@gmail.com> <8634md2vc2.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="30763"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Suhail Singh , 73046@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Sep 06 17:54:18 2024 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 1smbHu-0007sD-L9 for geb-bug-gnu-emacs@m.gmane-mx.org; 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Fri, 06 Sep 2024 08:52:30 -0700 (PDT) In-Reply-To: <8634md2vc2.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 06 Sep 2024 08:40:45 +0300") 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:291320 Archived-At: Eli Zaretskii writes: >> Based on =profiler-report=, the following function "chains" consume most of the >> CPU: >> - `font-lock-fontify-keywords-region' >> - tramp-sh-file-name-handler >> - tramp-sh-handle-file-truename >> - `tramp-wait-for-regexp' >> - tramp-sh-handle-file-exists-p >> - `tramp-wait-for-regexp' >> - tramp-sh-handle-file-directory-p >> - `tramp-wait-for-regexp' >> - tramp-sh-handle-file-attributes >> - `tramp-wait-for-regexp' >> >> As noted previously, disabling global-font-lock-mode helps. > > FWIW, I cannot reproduce this: I tried Dired on a remote host with > which I have connection that is quite slow, and saw neither high CPU > usage nor a significant delay in displaying a Dired buffer. In my case, the directory in question had 22 symlinks. How many symlinks did you try with? -- Suhail