From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from localhost (localhost [127.0.0.1]) by olra.theworths.org (Postfix) with ESMTP id 7C586431FBC for ; Fri, 19 Apr 2013 20:05:09 -0700 (PDT) X-Virus-Scanned: Debian amavisd-new at olra.theworths.org X-Spam-Flag: NO X-Spam-Score: 0 X-Spam-Level: X-Spam-Status: No, score=0 tagged_above=-999 required=5 tests=[RCVD_IN_DNSWL_NONE=-0.0001] autolearn=disabled Received: from olra.theworths.org ([127.0.0.1]) by localhost (olra.theworths.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hNnx8C3QljnQ for ; Fri, 19 Apr 2013 20:05:09 -0700 (PDT) Received: from plane.gmane.org (plane.gmane.org [80.91.229.3]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by olra.theworths.org (Postfix) with ESMTPS id D50F0431FB6 for ; Fri, 19 Apr 2013 20:05:08 -0700 (PDT) Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1UTO6p-0007tq-ID for notmuch@notmuchmail.org; Sat, 20 Apr 2013 05:05:03 +0200 Received: from ppp14-2-13-192.lns21.adl2.internode.on.net ([14.2.13.192]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 20 Apr 2013 05:05:03 +0200 Received: from toojays by ppp14-2-13-192.lns21.adl2.internode.on.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 20 Apr 2013 05:05:03 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: notmuch@notmuchmail.org From: John Steele Scott Subject: slow rendering of some HTML mail threads in emacs/notmuch due to shr. Date: Sat, 20 Apr 2013 12:29:51 +0930 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: ppp14-2-13-192.lns21.adl2.internode.on.net User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130329 Thunderbird/17.0.5 X-BeenThere: notmuch@notmuchmail.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: "Use and development of the notmuch mail system." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 20 Apr 2013 03:05:09 -0000 I've been enjoying using notmuch in emacs to handle my email, but some threads take aaaages to render. I'm talking three minutes for a thread with 15 messages. I'm not sure what it is in particular about this thread. Some combination of Outlook generated HTML and much repeated top-posting perhaps. I have observed similar slowness for threads of HTML mails produced by the ReviewBoard code review system. For this particular Outlook thread, I used elp-instrument package to instrument shr before showing the thread. The most time was spent in these functions: shr-descend 11783 196.09731454 0.0166423928 shr-generic 11681 190.86248305 0.0163395670 shr-tag-blockquote 81 57.140909005 0.7054433210 shr-tag-div 348 48.511533571 0.1394009585 shr-insert-document 14 27.808360994 1.9863114995 shr-tag-body 14 27.158463401 1.9398902429 shr-tag-p 4121 23.766379281 0.0057671388 shr-insert 8962 21.705253155 0.0024219206 shr-colorize-region 1075 2.6348254729 0.0024510004 shr-put-color 2135 2.4779991750 0.0011606553 shr-indent 13246 1.5816357290 0.0001194047 shr-expand-newlines 1075 1.4488115139 0.0013477316 shr-find-fill-point 5281 0.9872837309 0.0001869501 shr-tag-br 4162 0.9527550159 0.0002289175 shr-transform-dom 11123 0.6487086020 5.832...e-05 shr-remove-trailing-whitespace 14 0.5503726889 0.0393123349 shr-ensure-paragraph 8412 0.5039738979 5.991...e-05 shr-buffer-width 1075 0.4900505680 0.0004558609 shr-tag-b 381 0.17374644 0.0004560274 shr-fontize-cont 381 0.172155226 0.0004518509 shr-tag-table 8 0.154814786 0.0193518482 If I change mm-text-html-renderer to gnus-w3m instead of shr, notmuch-show renders this thread in the region of 3-7s, which still feels quite slow, but is an immense improvement. Setting it to lynx gives rendering times in the 2-3s ballpark, but it doesn't do bold/italic formatting, and some characters such are being rendered as escape sequences (e.g. ‘ shows up as \342\200\230). So I'll probably stick with gnus-w3m to get (barely) tolerable performance with decent rendering. Just putting this out there to maybe help the next person who gets annoyed by this slowness. Cheers, John