From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.bugs Subject: bug#61667: 29.0.60; Failure to redisplay Date: Sun, 26 Feb 2023 15:54:03 +0000 Message-ID: <8716b41c97839d6a8b87@heytings.org> References: <04d7cb31-684c-07c0-ee7b-503514fc1a85@yandex.ru> <5002b0b34b1213122157@heytings.org> <5002b0b34b7a73483fe3@heytings.org> <5002b0b34b0ee4220ba5@heytings.org> <20e46a69-8b22-65b6-f725-4ab5e5ec41f0@yandex.ru> <5002b0b34bd381f6d1f9@heytings.org> <8716b41c97734e78145e@heytings.org> <8716b41c9757d7e81bd2@heytings.org> <1dafb35c-657c-037f-8244-4568b4e22fcd@yandex.ru> <8716b41c9708333e6bdb@heytings.org> <6f161919-7ee4-e461-e688-797c76fa6d74@yandex.ru> <83fsatj57m.fsf@gnu.org> <83356sk4jk.fsf@gnu.org> <2d674d22-fe8c-b7a3-115f-515a8a37b7e5@yandex.ru> <831qmck3qt.fsf@gnu.org> <41c5671e-e9c3-33f3-6c9c-8a1a6fc527fb@yandex.ru> <83ttz8ils1.fsf@gnu.org> <8716b41c9716878d8cb9@heytings.org> Mime-Version: 1.0 Content-Type: text/plain; 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Sun, 26 Feb 2023 10:54:10 -0500 Original-Received: from heytings.org ([95.142.160.155]:46130) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pWJLg-0003rT-Hl for 61667@debbugs.gnu.org; Sun, 26 Feb 2023 10:54:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20220101; t=1677426843; bh=s/MNbPnSWM2Kk71P63scoX1Tb/INu7iVkDHaDPkdECA=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=m4kVMZGqGCnBP3HMc3FsKdBA4uuoePHc/IGmV461jl8hiVs+TZvBk5GVtLIgSj/mY FAy5WcKvUEcNvQkLOMLMWIYDnSV2yDbxGWzesMvq5nC7wCa+E32WLWHk+NcAWrs528 r+nybV9IoSzzsXyS4xCccLXCGcFKoRy7cZvl80iTVxKdWmQ4WszG1a6RFncwYAd871 +L2aH2oAj/fjCebmFIjVjOimfzkV76BrgGZbNg4UX4fk9h4ejI6WA0qrNOA5+tiP7m iksuqcZqNtWL/cMOUe1lUAHlVdK1pJM7YRJ6FEtJAmXDodA+TqOkN7r2RkVZKuwxlN uD8enV3E/0VWA== 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:256821 Archived-At: >>> To avoid this measurement affecting the delay itself, as we saw with >>> printfs and trace-redisplay, the timings should be sent via pipe to a >>> file, not to the screen. >> >> If they indeed don't affect the measurement when they are sent to a >> file, it is probably possible to sent them to the screen without >> affecting the measurement, by calling 'tail -f' on the file in which >> they are recorded in another terminal. > > Yes, I suppose this can work, if the new terminal is positioned far away > from Emacs's window. > > None of the new proposed tests depend on me being able to monitor the > output in real time, though. > If you want to measure the latency between the moment an XFlush is issued by Emacs and the moment you actually see the buffer contents of the buffer on screen, I think you could screencast your repro and use the recorded video to make that measurement (unless screencasting eliminates the problem, too...).