Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423052AbWLUTbI (ORCPT ); Thu, 21 Dec 2006 14:31:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1423054AbWLUTbI (ORCPT ); Thu, 21 Dec 2006 14:31:08 -0500 Received: from smtp-out.google.com ([216.239.33.17]:1425 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423053AbWLUTbG (ORCPT ); Thu, 21 Dec 2006 14:31:06 -0500 X-Greylist: delayed 791 seconds by postgrey-1.27 at vger.kernel.org; Thu, 21 Dec 2006 14:31:06 EST DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=received:date:from:to:cc:subject:message-id:x-mailer: mime-version:content-type:content-transfer-encoding; b=mCPkbxLhyjuWxXqbS7/j/PbK3mCUX8KEZ1ZhH+DgPGP4gdxl+l3QyFPgaXIEFVeHG CSQMD36/r0Kj+QlxNYzUw== Date: Thu, 21 Dec 2006 11:15:11 -0800 From: Andrew Morton To: Jens Axboe Cc: linux-kernel@vger.kernel.org, Linus Torvalds Subject: performance regression due to recent block changes Message-Id: <20061221111511.c3897be6.akpm@google.com> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 677 Lines: 14 Jens, the elapsed time for `mkefs2 /dev/hdc5' has just gone from nine seconds to sixty, with the anticipatory scheduler (at least). It is due to your recent merge. This is the enty enth time that block changes have been slammed into mainline without having had any exposure to -mm testers or even to me personally. And it's the second time obvious regressions have gone in as a result. I have a New Year's resolution for you ;) - 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/