Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262769AbVDHInW (ORCPT ); Fri, 8 Apr 2005 04:43:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262770AbVDHIjj (ORCPT ); Fri, 8 Apr 2005 04:39:39 -0400 Received: from [130.95.128.60] ([130.95.128.60]:25573 "EHLO asclepius.uwa.edu.au") by vger.kernel.org with ESMTP id S262753AbVDHIin (ORCPT ); Fri, 8 Apr 2005 04:38:43 -0400 X-UWA-Client-IP: 130.95.13.9 (UWA) Date: Fri, 8 Apr 2005 16:38:08 +0800 From: Matt Johnston To: Linus Torvalds Cc: Chris Wedgwood , Kernel Mailing List Subject: Re: Kernel SCM saga.. Message-ID: <20050408083807.GG373825@morwong.ucc.gu.uwa.edu.au> References: <20050408041341.GA8720@taniwha.stupidest.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4i X-SpamTest-Info: Profile: Formal (218/050405) X-SpamTest-Info: Profile: Detect Hard [UCS 290904] X-SpamTest-Info: Profile: SysLog X-SpamTest-Info: Profile: Marking Spam - Subject (UCS) [02-08-04] X-SpamTest-Status: Not detected X-SpamTest-Version: SMTP-Filter Version 2.0.0 [0125], KAS/Release Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1437 Lines: 34 On Thu, Apr 07, 2005 at 09:42:04PM -0700, Linus Torvalds wrote: > > On Thu, 7 Apr 2005, Chris Wedgwood wrote: > > > > I'm playing with monotone right now. Superficially it looks like it > > has tons of gee-whiz neato stuff... however, it's *agonizingly* slow. > > I mean glacial. A heavily sedated sloth with no legs is probably > > faster. > > Yes. The silly thing is, at least in my local tests it doesn't actually > seem to be _doing_ anything while it's slow (there are no system calls > except for a few memory allocations and de-allocations). It seems to have > some exponential function on the number of pathnames involved etc. > > I'm hoping they can fix it, though. The basic notions do not sound wrong. That is indeed correct wrt pathnames. The current head of monotone is a lot better in this regard (the order of 2-3 minutes for "monotone import" on a 2.6 linux untar). The basic problem is that in the last release (0.17), a huge amount of sanity checking code was added to ensure that inconsistent or generally bad revisions can never be written/received/transmitted. The focus is now on speeding that up - there's a _lot_ of low hanging fruit for us to look at. Matt - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/