From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 18 Jan 2001 17:52:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 18 Jan 2001 17:52:22 -0500 Received: from tstac.esa.lanl.gov ([128.165.46.3]:29863 "EHLO tstac.esa.lanl.gov") by vger.kernel.org with ESMTP id ; Thu, 18 Jan 2001 17:52:18 -0500 From: Steven Cole Reply-To: scole@lanl.gov Date: Thu, 18 Jan 2001 15:52:01 -0700 X-Mailer: KMail [version 1.1.99] Content-Type: text/plain; charset=US-ASCII To: linux-kernel@vger.kernel.org Subject: Re: 2.4.1pre8 slowdown on dbench tests MIME-Version: 1.0 Message-Id: <01011815520101.01097@spc.esa.lanl.gov> Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 18 Jan 2001, Marcelo Tosatti wrote: > On my dbench runs I've noted a slowdown between pre4 and pre8 with 48 > threads. (128MB, 2 CPU's machine) I ran dbench 48 four times in succession for 2.4.0 and 2.4.1-pre8. The change in performance appears to be not significant. This was performed with a Dell 420 dual P-III (733 MHz), with a ST317221A, ATA DISK drive and ReiserFS 3.6.25. Each test was done under the same conditions, running KDE 2.0, one xterm, right after booting. 2.4.0: Average 9.07868 MB/sec Throughput 9.03546 MB/sec (NB=11.2943 MB/sec 90.3546 MBit/sec) Throughput 8.99614 MB/sec (NB=11.2452 MB/sec 89.9614 MBit/sec) Throughput 8.87756 MB/sec (NB=11.097 MB/sec 88.7756 MBit/sec) Throughput 9.40556 MB/sec (NB=11.7569 MB/sec 94.0556 MBit/sec) 2.4.1-pre8: Average 9.25707 MB/sec Throughput 8.93444 MB/sec (NB=11.1681 MB/sec 89.3444 MBit/sec) Throughput 9.43609 MB/sec (NB=11.7951 MB/sec 94.3609 MBit/sec) Throughput 9.5075 MB/sec (NB=11.8844 MB/sec 95.075 MBit/sec) Throughput 9.15026 MB/sec (NB=11.4378 MB/sec 91.5026 MBit/sec) Steven - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/