From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Pekka Enberg" Subject: Re: SLUB performance regression vs SLAB Date: Fri, 5 Oct 2007 12:19:28 +0300 Message-ID: <84144f020710050219k2460631cjfd556d6eae645887@mail.gmail.com> References: <470554D9.2050505@redhat.com> <20071004.141113.08322956.davem@davemloft.net> <47055F84.109@redhat.com> <20071004.150718.95506800.davem@davemloft.net> <20071004222356.GH23367404@sgi.com> <20071005064853.GI5711@kernel.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "David Chinner" , "David Miller" , cebbert@redhat.com, willy@linux.intel.com, clameter@sgi.com, nickpiggin@yahoo.com.au, hch@lst.de, mel@skynet.ie, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, suresh.b.siddha@intel.com To: "Jens Axboe" Return-path: Received: from rv-out-0910.google.com ([209.85.198.189]:40483 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755306AbXJEJT3 (ORCPT ); Fri, 5 Oct 2007 05:19:29 -0400 Received: by rv-out-0910.google.com with SMTP id k20so55713rvb for ; Fri, 05 Oct 2007 02:19:29 -0700 (PDT) In-Reply-To: <20071005064853.GI5711@kernel.dk> Content-Disposition: inline Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Hi, On 10/5/07, Jens Axboe wrote: > I'd like to second Davids emails here, this is a serious problem. Having > a reproducible test case lowers the barrier for getting the problem > fixed by orders of magnitude. It's the difference between the problem > getting fixed in a day or two and it potentially lingering for months, > because email ping-pong takes forever and "the test team has moved on to > other tests, we'll let you know the results of test foo in 3 weeks time > when we have a new slot on the box" just removing any developer > motivation to work on the issue. What I don't understand is that why don't the people who _have_ access to the test case fix the problem? Unlike slab, slub is not a pile of crap that only Christoph can hack on... Pekka