From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/42523 Path: main.gmane.org!not-for-mail From: Karl Kleinpaste Newsgroups: gmane.emacs.gnus.general Subject: Re: db-backed mail back end Date: Thu, 24 Jan 2002 07:54:15 -0500 Sender: owner-ding@hpc.uh.edu Message-ID: References: NNTP-Posting-Host: coloc-standby.netfonds.no Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1035177753 12284 80.91.224.250 (21 Oct 2002 05:22:33 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Mon, 21 Oct 2002 05:22:33 +0000 (UTC) Return-Path: Original-Received: (qmail 11700 invoked from network); 24 Jan 2002 14:42:54 -0000 Original-Received: from malifon.math.uh.edu (mail@129.7.128.13) by mastaler.com with SMTP; 24 Jan 2002 14:42:54 -0000 Original-Received: from sina.hpc.uh.edu ([129.7.128.10] ident=lists) by malifon.math.uh.edu with esmtp (Exim 3.20 #1) id 16Tl4m-0005uo-00; Thu, 24 Jan 2002 08:42:04 -0600 Original-Received: by sina.hpc.uh.edu (TLB v0.09a (1.20 tibbs 1996/10/09 22:03:07)); Thu, 24 Jan 2002 08:41:56 -0600 (CST) Original-Received: from sclp3.sclp.com (qmailr@sclp3.sclp.com [209.196.61.66]) by sina.hpc.uh.edu (8.9.3/8.9.3) with SMTP id IAA16098 for ; Thu, 24 Jan 2002 08:41:45 -0600 (CST) Original-Received: (qmail 11691 invoked by alias); 24 Jan 2002 14:41:44 -0000 Original-Received: (qmail 11684 invoked from network); 24 Jan 2002 14:41:34 -0000 Original-Received: from mesquite.slip.cs.cmu.edu (HELO cinnamon.vanillaknot.com) (128.2.207.11) by gnus.org with SMTP; 24 Jan 2002 14:41:34 -0000 Original-Received: (from karl@localhost) by cinnamon.vanillaknot.com (8.11.6/8.11.6) id g0OCsFt19531; Thu, 24 Jan 2002 07:54:15 -0500 Original-To: ding@gnus.org X-Face: "8-CgoYhiD_O!#(F%E=..0>QA_#WDy+]_XoAr)L]`-zjAc\d+nsFXq`=v_# =pVh#sP*K~j,0k9N}`E7jX"5+U?4/UIF1EE X-Face: "5(T0tZd{6}pd~YzBG8O/*EW,.]6]@`m^e;fv65W^Y&=d"M\1H}>T~4_.kcDD.O~y3k)a6 hR;Nmi>9|>Nm${2IpM0^RcUEa\jcq?KOP)C&~x51l~zCHTulL^_T|u0I^kB'z@]{`2YjQu Original-Lines: 26 User-Agent: Gnus/5.090006 (Oort Gnus v0.06) XEmacs/21.4 (Common Lisp, i686-pc-linux) Precedence: list X-Majordomo: 1.94.jlt7 Xref: main.gmane.org gmane.emacs.gnus.general:42523 X-Report-Spam: http://spam.gmane.org/gmane.emacs.gnus.general:42523 Lars Magne Ingebrigtsen writes: > I just compared a 20K group with a 100 group, and the 20K group took > three times as long to enter as the 100 group. (And I selected the > four most recent articles in each.) You and Simon have both made this observation. I just don't see the same performance difference. Perhaps my blobs of articles aren't big enough. That's by design, at least in part, as a choice for mental discipline: I don't want groups larger than I can reasonably think about. (I happen to generate per-year archive groups every Jan 1.) The largest nnml group I have has 4900 articles in it, with a 620K .overview. I'm operating on a none-too-recent PII-450 under Linux with RAID1 (mirrored) IDEs. When I select only the last 4 articles from it, the time between hitting RET and seeing a displayed summary is too short to measure by eyeball against a clock -- less than a second. How do you measure 4-article entry to a 100-article group, that you can say that the time varies by a factor of 3? What are the timings? When I select the whole group, Gnus says "scoring" within 3 or 4 seconds of beginning entry, which then takes 28 seconds. Then Gnus says "Generating summary", which takes well over a minute before the summary is displayed. Total time is about 1:43. That's the sort of time occupation that worries me.