From debbugs-submit-bounces@debbugs.gnu.org Wed Nov 09 12:17:27 2022 Received: (at submit) by debbugs.gnu.org; 9 Nov 2022 17:17:27 +0000 Received: from localhost ([127.0.0.1]:40776 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1osoha-0002qn-5h for submit@debbugs.gnu.org; Wed, 09 Nov 2022 12:17:27 -0500 Received: from lists.gnu.org ([209.51.188.17]:48920) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1osmKw-00077A-5L for submit@debbugs.gnu.org; Wed, 09 Nov 2022 09:45:54 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1osmKu-0000YY-Uw for bug-gnu-emacs@gnu.org; Wed, 09 Nov 2022 09:45:52 -0500 Received: from mikpom.ru ([212.193.52.17]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1osmKm-0002YY-TD for bug-gnu-emacs@gnu.org; Wed, 09 Nov 2022 09:45:52 -0500 Received: from [10.61.0.4] (unknown [45.86.188.211]) by mikpom.ru (Postfix) with ESMTPSA id 0E300FA4 for ; Wed, 9 Nov 2022 21:45:35 +0700 (+07) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mikpom.ru; s=dkim; t=1668005136; bh=pBodLgx99w/RL9e/tajokEtCJ+wcLQYCcDqnYlWvxWI=; h=Date:From:Subject:To:From; b=qksQWqfml+nEU0/PklQ5Q7SMTiZudIp0MU32sWqycF0vyojCCz64MOCcOxeS906mI GDduNb9CnTHHU0CZimBgiP6Pvi32N7K1pGGE8rOl97zmheLg/KeOZgaCPKLRekQr1K 8pQvxiHaHNZyod96PSioyjDRLw/XG4W/tTewBU6RVVz/aTWGIh7JpMci4aU1kR6Ys8 MCHE4g/FOfIUyxK79pRmH7bq11ulHSUHpZ48ozdpyXcdqDs0sYm4m+Dcr8rGNNzpWV ERfLEipnsQV7FEtdJpJ/lS81f01N11XedICucDHKv+EbB9mBj2HqETHpVwr1XdOs+z q0CjX8NJ+o27A== Message-ID: <907b450b-c502-a09c-0f81-0ff57e3a3bfa@mikpom.ru> Date: Wed, 9 Nov 2022 21:45:35 +0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.1 Content-Language: en-US From: Mikhail Pomaznoy Subject: Major performance issues in dired over ssh (Tramp) when remote directory contains symlinks To: bug-gnu-emacs@gnu.org Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=212.193.52.17; envelope-from=mikpom@mikpom.ru; helo=mikpom.ru X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.4 (-) X-Debbugs-Envelope-To: submit X-Mailman-Approved-At: Wed, 09 Nov 2022 12:17:24 -0500 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.4 (--) Greetings emacs devs, or to whom it may concern! I am having troubles with dired listings of remote directories containing many files and symlinks. When I scroll through such a dired buffer Emacs lags (over a second) on every page-down scroll. The problem is easily reproducible with -Q if the directory contains a hundred files and a hundred symbolic links to some other hundred files somewhere on the filesystem. If I kill the links in the dired buffer (without deleting any actual files or links) then everything scrolls smoothly as usual. Could you please check if thats a real issue in your setting? ssh connection I am using is not so slow... Kind regards, -Mikhail In GNU Emacs 28.2 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.34, cairo version 1.17.6)  of 2022-09-12 built on frederik Windowing system distributor 'The X.Org Foundation', version 11.0.12101004 System Description: Arch Linux Configured using:  'configure --with-x-toolkit=gtk3 --with-native-compilation  --sysconfdir=/etc --prefix=/usr --libexecdir=/usr/lib  --localstatedir=/var --with-cairo --with-harfbuzz --with-libsystemd  --with-modules 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fno-plt  -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security  -fstack-clash-protection -fcf-protection -g  -ffile-prefix-map=/build/emacs/src=/usr/src/debug -flto=auto'  'LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now -flto=auto'' Configured features: ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG JSON LCMS2 LIBOTF LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS X11 XDBE XIM XPM GTK3 ZLIB Important settings:   value of $LANG: en_US.UTF-8   locale-coding-system: utf-8-unix Major mode: Dired by name Minor modes in effect:   shell-dirtrack-mode: t   tooltip-mode: t   global-eldoc-mode: t   show-paren-mode: t   electric-indent-mode: t   mouse-wheel-mode: t   tool-bar-mode: t   menu-bar-mode: t   file-name-shadow-mode: t   global-font-lock-mode: t   font-lock-mode: t   blink-cursor-mode: t   auto-composition-mode: t   auto-encryption-mode: t   auto-compression-mode: t   buffer-read-only: t   line-number-mode: t   indent-tabs-mode: t   transient-mark-mode: t Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message rmc puny rfc822 mml mml-sec epa derived epg rfc6068 epg-config gnus-util rmail rmail-loaddefs text-property-search mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils dired-aux dired dired-loaddefs tramp-sh tramp-cache tramp tramp-loaddefs trampver tramp-integration files-x tramp-compat shell pcomplete comint ansi-color ring parse-time iso8601 time-date ls-lisp format-spec auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs cl-loaddefs cl-lib password-cache json subr-x map seq byte-opt gv bytecomp byte-compile cconv iso-transl tooltip eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors frame minibuffer cl-generic cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese composite emoji-zwj charscript charprop case-table epa-hook jka-cmpr-hook help simple abbrev obarray cl-preloaded nadvice button loaddefs faces cus-face macroexp files window text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote threads dbusbind inotify lcms2 dynamic-setting system-font-setting font-render-setting cairo move-toolbar gtk x-toolkit x multi-tty make-network-process native-compile emacs) Memory information: ((conses 16 103629 9492)  (symbols 48 8400 0)  (strings 32 27457 1311)  (string-bytes 1 928685)  (vectors 16 17653)  (vector-slots 8 390979 10629)  (floats 8 27 45)  (intervals 56 2626 0)  (buffers 992 14)) From debbugs-submit-bounces@debbugs.gnu.org Thu Nov 10 04:17:02 2022 Received: (at 59151) by debbugs.gnu.org; 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Thu, 10 Nov 2022 10:16:51 +0100 From: Michael Albinus To: Mikhail Pomaznoy Subject: Re: bug#59151: Major performance issues in dired over ssh (Tramp) when remote directory contains symlinks In-Reply-To: <907b450b-c502-a09c-0f81-0ff57e3a3bfa@mikpom.ru> (Mikhail Pomaznoy's message of "Wed, 9 Nov 2022 21:45:35 +0700") References: <907b450b-c502-a09c-0f81-0ff57e3a3bfa@mikpom.ru> Date: Thu, 10 Nov 2022 10:16:48 +0100 Message-ID: <87k043xj7j.fsf@gmx.de> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Provags-ID: V03:K1:ArMBKC4/t3F3/uqgdE21q4J+/Gi2eYiMwdWw+9sk2CaV6txZIR+ mrMal06X0Tl+ykxzx8NrjFRFG9LoLspVzLm6jfXHmZ3FTjNi4xHzAlysy3xkA5SFzqp+HdZ Ndk2bg3hGxxvPxdaLxumVYF86mB8ypwFKmaitSqtxYh8Kloe6OwZSbSt8C31pNjPA2ImL0o tgJNHpNvkf5Haugjyz+Bw== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:DLvJR256DFs=;b0c0/KM/WNgzwsMImvj0ig9iwBC CnNT7qzQSdmuy9xXUwFSgbv9nZmNx4Pc3w1iHhfmaArgnt9T96UGjI+jo1Bx2M7WzwpnkkL2e 3wu8D5ppRHvxz0ksTcznnWNwGRp95PQf0hG6cc/YZq+tZ3kEBhCDVC/1dBtFj8jz4TWMZUiZt a+U/WyOCJGPrGaG0xdrB3UaR0iKaFjkLHcSKupr00pU8RTMLK10L1cTOhYopD4iM5OKiPQ5mU Bhdc5+i2jkommbd/xtPMpr4nMXLNXyOTNblJVZGsRnjbPQA89Bnvvw4CLkvT75jJAMz76lSiy ziYYQzs9t+TqM90rFFA6I0UEmr8ZdtMZTJVLjTqbrpraZefhfggNNP5hIb6yu79RKJuAcGrYF HIoT0wFbSL7s+aexCcesJTl+LeQbDlUtUrNQWp8l9sKQQ7boTWZ3mIYureZM3396pLP9nN8Io zKzIp/XH1JFy6pXwIGWiweIfjVN0T4iWsyH57KpdeHLHDbe5cRivPCmkEVrONBliCr5uvLUaO qZ3hvJ23+7JrLfoB8FPxMIw1oJi6/VTMKzgx4GE1YvXULm/ZjROuVNJca/X3KmZlosd8ji/AD brM3/lr1h3YVrVNCtSVf79bELJOMcLHCDrBYTZuCQ0TNd871hwIVJJKhDT0cv/aXVd0wtFc/f dcP4pmeTd6jmlsE9xbpK5B/N2UhF2CvMFHYypMgd2KNkhXpfsLjxOStoy2kdLfK7/1DUKmUxW CkosqEWcd/wdL6LB2N/T8ikZZjew7Hi+yNBlmQrDGLE3I5tsjEd7remGFMYvZEz04UeZLHeEf dGGBD8lA9Ab084YjgCxvEkKKULBCmiQi2Z8ifNZvK3RPvvoti6BzMHIllLy9l9SgWuqNPUBJs PdGqvyaSAtkxSIwAybjoGoVN+S96chSZOojwcpQJiP6JGpHsVJDxHgK8x9JMTYblvejwIcFND gPgezA== X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 59151 Cc: 59151@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -1.7 (-) Mikhail Pomaznoy writes: > Greetings emacs devs, or to whom it may concern! Hi Mikhail, > I am having troubles with dired listings of remote directories > containing many files and symlinks. When I scroll through such a dired > buffer Emacs lags (over a second) on every page-down scroll. > > The problem is easily reproducible with -Q if the directory contains a > hundred files and a hundred symbolic links to some other hundred files > somewhere on the filesystem. If I kill the links in the dired buffer > (without deleting any actual files or links) then everything scrolls > smoothly as usual. > > Could you please check if thats a real issue in your setting? ssh > connection I am using is not so slow... Dired does a lot of work for applying proper faces for the file status. For symlinked files, for example, it calls file-truename, file-exists-p, file-directory-p, for every single file in the listing. Some of them even several times. This takes time for remote files, especially if you don't use Tramp caches, or caches with a short timeout. I recommend you to disable the buffer-local font-lock-mode in a remote dired buffer with so many symlinked files, via `M-x font-lock-mode'. > Kind regards, > > -Mikhail Best regards, Michael. From debbugs-submit-bounces@debbugs.gnu.org Thu Nov 10 04:30:47 2022 Received: (at 59151) by debbugs.gnu.org; 10 Nov 2022 09:30:47 +0000 Received: from localhost ([127.0.0.1]:41893 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ot3tX-0004BC-EJ for submit@debbugs.gnu.org; Thu, 10 Nov 2022 04:30:47 -0500 Received: from mikpom.ru ([212.193.52.17]:47940) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ot3tU-0004B0-Ll for 59151@debbugs.gnu.org; Thu, 10 Nov 2022 04:30:45 -0500 Received: from [192.168.0.100] (nat-88-4.nsk.sibset.net [5.44.169.94]) by mikpom.ru (Postfix) with ESMTPSA id F3287680; Thu, 10 Nov 2022 16:30:40 +0700 (+07) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mikpom.ru; s=dkim; t=1668072641; bh=u8ok901HPCaLQsefsra0fOAnC8Eci4UKHF5WW3Fb4Kw=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=VqPCjbATJASRuYPmzMeOVdq1WrSTQvs4JMEBx8qXz+HhvlXQfqTKw/OJhw8XgCAl/ YIWB7TyqBlvua4gqhEVGaRuB0mCeZoNPotmu/x+PxPliv5ZP9b+8/dJr8VEe/NjZnP THc2cQZXcOEXVuC1xghYMrnMcqxeRxYBij5Z99sxtOycFPYGxI3VjYiQkJL80P2x03 NXtBnEYvKjfdm1I2vepQKePgJ5UfMXje4mN9Ne2oa8axCNX6Apec3wW0WKz72A+1e4 6gG+0GaCs/ZJ7mNDmcIGyHKJXA19AO/F3xhhLJBxF8WDpw991QQ9TXU9xB7aQE5V4v YAQzLO29TY2nQ== Message-ID: Date: Thu, 10 Nov 2022 16:30:30 +0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.1 Subject: Re: bug#59151: Major performance issues in dired over ssh (Tramp) when remote directory contains symlinks Content-Language: en-US To: Michael Albinus References: <907b450b-c502-a09c-0f81-0ff57e3a3bfa@mikpom.ru> <87k043xj7j.fsf@gmx.de> From: Mikhail Pomaznoy In-Reply-To: <87k043xj7j.fsf@gmx.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -1.8 (-) X-Debbugs-Envelope-To: 59151 Cc: 59151@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.8 (--) > I recommend you to disable the buffer-local font-lock-mode in a remote > dired buffer with so many symlinked files, via `M-x font-lock-mode'. Indeed, disabling font-lock works like a charm and restores the performance > This takes time for remote files, especially if you don't use Tramp > caches, or caches with a short timeout. What an average Emacs Tramp user can do about those caches? searching for keywords `tramp cache` in customize menu of emacs gives nothing. If I search for `cache` in Tramp manual there is just a single section which doesn't look relevant for this case. Is the caches you talking about something "sophisticated" or simply documentation is lacking? Of course certain lag is fine and expected when the directory is listed for the first time. But on every scroll ? Thanks for your reply, -Mikhail On 11/10/22 16:16, Michael Albinus wrote: > Mikhail Pomaznoy writes: > >> Greetings emacs devs, or to whom it may concern! > Hi Mikhail, > >> I am having troubles with dired listings of remote directories >> containing many files and symlinks. When I scroll through such a dired >> buffer Emacs lags (over a second) on every page-down scroll. >> >> The problem is easily reproducible with -Q if the directory contains a >> hundred files and a hundred symbolic links to some other hundred files >> somewhere on the filesystem. If I kill the links in the dired buffer >> (without deleting any actual files or links) then everything scrolls >> smoothly as usual. >> >> Could you please check if thats a real issue in your setting? ssh >> connection I am using is not so slow... > Dired does a lot of work for applying proper faces for the file > status. For symlinked files, for example, it calls file-truename, > file-exists-p, file-directory-p, for every single file in the > listing. Some of them even several times. > > This takes time for remote files, especially if you don't use Tramp > caches, or caches with a short timeout. > > I recommend you to disable the buffer-local font-lock-mode in a remote > dired buffer with so many symlinked files, via `M-x font-lock-mode'. > >> Kind regards, >> >> -Mikhail > Best regards, Michael. From debbugs-submit-bounces@debbugs.gnu.org Thu Nov 10 05:54:16 2022 Received: (at 59151-done) by debbugs.gnu.org; 10 Nov 2022 10:54:16 +0000 Received: from localhost ([127.0.0.1]:42086 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ot5CK-000083-5i for submit@debbugs.gnu.org; Thu, 10 Nov 2022 05:54:16 -0500 Received: from mout.gmx.net ([212.227.17.20]:45023) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ot5CI-00007p-Hl for 59151-done@debbugs.gnu.org; Thu, 10 Nov 2022 05:54:15 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.de; s=s31663417; t=1668077646; bh=AV0dOFGIRZqjDWDpLc0LNVxzG+2OBpzKeUmVnNGN4Kk=; h=X-UI-Sender-Class:From:To:Cc:Subject:In-Reply-To:References:Date; b=N6v9l/KOwQNukM5zP1TYJdBY2yQSmZIUoCVloRJY4EAljIf1ur98sgeLEF0LVIdIh RWrWikFafskHJ0CG7yCspYlaHv8UPBHN+gd3OmsLd9JBTw9dUXZN4aey8AdTJIS7In N8MVmop5xZXPAbJR4iEnpYpltXjTVIaYeyfcA2jdxRdCuQjmB8zUfo8JTmxlmxuR99 Y+lXnT9deNFzCLd7ICfILOH98N/CYuHZSjzIORp7D6j+9HhHyFffJwPi6VVAVjvfNj +dQOVpGbP4wU5VgQIPB/uCNDZWoC8x8fg21lAR6yG5vAH600VeKR7gns68wYQpJxNS oD5YfSQpJzOVw== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from gandalf.gmx.de ([185.89.39.18]) by mail.gmx.net (mrgmx105 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MxUnp-1pCvSx0U1Z-00xrCj; Thu, 10 Nov 2022 11:54:06 +0100 From: Michael Albinus To: Mikhail Pomaznoy Subject: Re: bug#59151: Major performance issues in dired over ssh (Tramp) when remote directory contains symlinks In-Reply-To: (Mikhail Pomaznoy's message of "Thu, 10 Nov 2022 16:30:30 +0700") References: <907b450b-c502-a09c-0f81-0ff57e3a3bfa@mikpom.ru> <87k043xj7j.fsf@gmx.de> Date: Thu, 10 Nov 2022 11:54:03 +0100 Message-ID: <87fserxepg.fsf@gmx.de> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Provags-ID: V03:K1:Z7Is3XwbbD0teBEowYI78OQrOSD/ueqghgZvNi7Z/cdgRUmx7xZ PwTsTAhzDnysHjvJ+12jdQ0S2xu3JwF9qef3nZ4WQNAJxL/M7cR5BUtb2x3BDuqQCWI5z6Q +bbo58eVO/uq6P4zwDDajObXAjso7y7cWY7YE8vlvyFuIjs2ZhiH5XtZDXrojrEXjsmYbSx US5eWaNl4e7IRlfjmVBAg== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:/CM7NAlhXxk=;a/wloVCxOYICmYpaD7qhApR6Ts9 Oxip0aIwXPdDSkHbdIb69MQWV4sPbsAha2LrpafGhZ9C2JNG7N+o4QEVw8SvItaSxjxZ6B5X/ WtDfwV+lQd/LKoBHc10vWcIZGwwFZA0AglN2mVCJO31V0H28++pWXj2bOkzHXhJMGlLyz37/Q PPcFvVE33kFnveSoG0iKMPgX5OSZdMeLoQzkb+cg8YB73isaQqSegMB+fb40UdILTwtf8kSi0 y437WpZBtjyC6ET9vhHoz7CoKulPmX3s9xm8XV8uNGmOAH5NwHT8auGT+mcsQmeMkPt/CYmdL Aeuch1rHTen5MpP4LIF/vObdN7gzvOt7FfXKFMdkuyFRIytXsH6zDs9wU5H/hDD1WvCZL3CMZ ISX7VOzEMQhnT5gx5+6IM3QcHAoYM1ept/nWQo9fmNdhu5StxqsQQnPQn7MtKfS1ZzWp2f4sE lFrZJnEXVNiuRONtf0lKHheARXWjXa9av8lzxmuflU2CZ/y/9gqDbOm2tzsL1hgdNQVWMLbc1 /Lh/E0dIKOGFY6MOA/4strsobablMVViI1gr5/ISZGVD4WcZg6Ps7a3kx4eyMkhf9O5ZhXDyx W6BTwLfaJ+In7MT2ZhyA7WvJ6IRYGpmLOsVyUtL4sAF3zgtnOrLSbOQ785XfMOlljCM/4XQoI elks/Arqdk8TfbK1s/tRWUJ/HCm37xInL9B+G8ayXHl/DmHSk2Vp/LWB3kD2G+Cu24EoWPbYR R0At5Y3X/sAY8mLYhKsdygrI2V8thEpmpq4OMaw7oza5ALz33Se5pQTf634c4W1+EUM8BpHNM 9EMFtq1Gu5ibpZday/lbjtKQdhcLC91cTgXUxVuBQyWkdWBfRMdZ2TgEo8FB03mM1jW61JwhA iah3EFq6SrDL/VL0wKM+buLA+ps5NnGMN/0qAtjOM1iBc9JCRzP5RE0FKLhz4GYSVR1jss915 ACuNfDWGXnpkXW4zHXOi54BEZaM= X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 59151-done Cc: 59151-done@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -1.7 (-) Mikhail Pomaznoy writes: Hi Mikhail, >> I recommend you to disable the buffer-local font-lock-mode in a remote >> dired buffer with so many symlinked files, via `M-x font-lock-mode'. > Indeed, disabling font-lock works like a charm and restores the performance Thanks for the feedback, I'm closing the bug. >> This takes time for remote files, especially if you don't use Tramp >> caches, or caches with a short timeout. > What an average Emacs Tramp user can do about those caches? searching > for keywords `tramp cache` in customize menu of emacs gives > nothing. If I search for `cache` in Tramp manual there is just a > single section which doesn't look relevant for this case. Is the > caches you talking about something "sophisticated" or simply > documentation is lacking? See remote-file-name-inhibit-cache. It's default value is 10, meaning caching for 10 seconds. You can increase this value, or set it to nil. > Of course certain lag is fine and expected when the directory is > listed for the first time. But on every scroll ? > > Thanks for your reply, > > -Mikhail Best regards, Michael. 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