Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755351AbYCNDHI (ORCPT ); Thu, 13 Mar 2008 23:07:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751143AbYCNDG5 (ORCPT ); Thu, 13 Mar 2008 23:06:57 -0400 Received: from mga10.intel.com ([192.55.52.92]:38821 "EHLO fmsmga102.fm.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750783AbYCNDG4 (ORCPT ); Thu, 13 Mar 2008 23:06:56 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.25,498,1199692800"; d="scan'208";a="533686660" Subject: Re: hackbench regression since 2.6.25-rc From: "Zhang, Yanmin" To: Christoph Lameter Cc: Andrew Morton , Kay Sievers , Greg Kroah-Hartman , LKML , Ingo Molnar In-Reply-To: References: <1205394417.3215.85.camel@ymzhang> <20080313014808.f8d25c2a.akpm@linux-foundation.org> <1205400538.3215.148.camel@ymzhang> Content-Type: text/plain; charset=utf-8 Date: Fri, 14 Mar 2008 11:04:02 +0800 Message-Id: <1205463842.3215.188.camel@ymzhang> Mime-Version: 1.0 X-Mailer: Evolution 2.9.2 (2.9.2-2.fc7) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1873 Lines: 44 On Thu, 2008-03-13 at 17:16 -0700, Christoph Lameter wrote: > Could you recompile the kernel with slub performance statistics and post > the output of > > slabinfo -AD Before testing with kernel 2.6.25-rc5: Name Objects Alloc Free %Fast vm_area_struct 2795 135185 132587 93 29 :0004096 25 119045 119043 99 98 :0000064 12257 119671 107742 98 50 :0000192 3312 78563 75370 92 21 :0000128 4648 48143 43738 97 53 dentry 15217 46675 31527 95 72 :0000080 12784 33674 21206 99 97 :0000016 4367 25871 23705 99 78 :0000096 3001 22591 20084 99 92 buffer_head 5536 18147 12884 97 42 anon_vma 1729 14948 14130 99 73 After testing: Name Objects Alloc Free %Fast :0000192 3428 80093958 80090708 92 8 :0000512 374 80016030 80015715 68 7 vm_area_struct 2875 224524 221868 94 20 :0000064 12408 134273 122227 98 47 :0004096 24 127397 127395 99 98 :0000128 4596 57837 53432 97 48 dentry 15659 51402 35824 95 64 :0000016 4584 29327 27161 99 76 :0000080 12784 33674 21206 99 97 :0000096 2998 26264 23757 99 93 So block 192 and 512's and very active and their fast free percentage is low. -yanmin -- 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/