Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 27 Jul 2001 17:12:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 27 Jul 2001 17:12:11 -0400 Received: from maila.telia.com ([194.22.194.231]:4348 "EHLO maila.telia.com") by vger.kernel.org with ESMTP id ; Fri, 27 Jul 2001 17:11:58 -0400 Message-Id: <200107272112.f6RLC3d28206@maila.telia.com> Content-Type: text/plain; charset=US-ASCII From: Roger Larsson To: linux-kernel@vger.kernel.org Subject: 2.4.8-pre1 and dbench -20% throughput Date: Fri, 27 Jul 2001 23:08:04 +0200 X-Mailer: KMail [version 1.2.3] MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Original-Recipient: rfc822;linux-kernel-outgoing Hi all, I have done some throughput testing again. Streaming write, copy, read, diff are almost identical to earlier 2.4 kernels. (Note: 2.4.0 was clearly better when reading from two files - i.e. diff - 15.4 MB/s v. around 11 MB/s with later kenels - can be a result of disk layout too...) But "dbench 32" (on my 256 MB box) results has are the most interesting: 2.4.0 gave 33 MB/s 2.4.8-pre1 gives 26.1 MB/s (-21%) Do we now throw away pages that would be reused? [I have also verified that mmap002 still works as expected] /RogerL - 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/