Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265519AbUFIDfZ (ORCPT ); Tue, 8 Jun 2004 23:35:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265520AbUFIDfZ (ORCPT ); Tue, 8 Jun 2004 23:35:25 -0400 Received: from web51807.mail.yahoo.com ([206.190.38.238]:27281 "HELO web51807.mail.yahoo.com") by vger.kernel.org with SMTP id S265519AbUFIDfN (ORCPT ); Tue, 8 Jun 2004 23:35:13 -0400 Message-ID: <20040609033513.76754.qmail@web51807.mail.yahoo.com> Date: Tue, 8 Jun 2004 20:35:13 -0700 (PDT) From: Phy Prabab Subject: slow down in 2.6 vs 2.4 To: linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2359 Lines: 80 Hello! Over the last two days I have been struggling with understanding why 2.6.x kernel is slower than 2.4.21/23 kernels. I think I have a test case which demostrates this issue. I have downloaded gcc-3.4.0 and run with this config: --enable-languages=c,c++ --prefix=/usr/tmp/foo using gcc-3.2.3 and binutils-2.13.2.1, on IBM x335 w/2x 2.8G Xeon w/8G RAM, no ht[bios killed], using local file system (XFS): make times: 2.4.21: 323.68user 56.07system 6:35.77elapsed 95%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (3138783major+3818347minor)pagefaults 0swaps 2.6.7-rc3-s63 (SPA scheduler): 334.01user 69.86system 7:01.47elapsed 95%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (13301major+6931745minor)pagefaults 0swaps 2.6.7-rc3: 336.17user 68.41system 7:02.47elapsed 95%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (13301major+6931745minor)pagefaults 0swaps Machine: 00:00.0 Host bridge: ServerWorks: Unknown device 0012 (rev 13) 00:00.1 Host bridge: ServerWorks: Unknown device 0012 00:00.2 Host bridge: ServerWorks: Unknown device 0000 00:01.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27) 00:0f.0 Host bridge: ServerWorks CSB5 South Bridge (rev 93) 00:0f.1 IDE interface: ServerWorks CSB5 IDE Controller (rev 93) 00:0f.2 USB Controller: ServerWorks OSB4/CSB5 OHCI USB Controller (rev 05) 00:0f.3 ISA bridge: ServerWorks: Unknown device 0225 00:11.0 Host bridge: ServerWorks: Unknown device 0101 (rev 03) 00:11.2 Host bridge: ServerWorks: Unknown device 0101 (rev 03) 01:01.0 SCSI storage controller: Symbios Logic Inc. (formerly NCR): Unknown device 0030 (rev 07) 01:02.0 Ethernet controller: Intel Corporation: Unknown device 100e (rev 02) 02:01.0 Ethernet controller: BROADCOM Corporation: Unknown device 16a7 (rev 02) 02:02.0 Ethernet controller: BROADCOM Corporation: Unknown device 16a7 (rev 02) Anything else needed? Is there something I can do to try and understand this issue? Thank you for your time. Phy __________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. http://messenger.yahoo.com/ - 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/