Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751474AbVKPTGY (ORCPT ); Wed, 16 Nov 2005 14:06:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751493AbVKPTGY (ORCPT ); Wed, 16 Nov 2005 14:06:24 -0500 Received: from web34111.mail.mud.yahoo.com ([66.163.178.109]:58996 "HELO web34111.mail.mud.yahoo.com") by vger.kernel.org with SMTP id S1751474AbVKPTGX (ORCPT ); Wed, 16 Nov 2005 14:06:23 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=R12jYt+Cm8kntE9MWsBjfpTLumEXqgMV8NLzNO0FjCNwW7scNg7yDQ2Rsa7Ji2FA/NFPq+kmD/mUCS/IO2rMJ9gQGBzmG3isAKLp59yBsycl+RhexTFn77TI8Uw3VH6fZb0foXeoPe5g+1FobGkgHqxzIjm1kbSPRWG3zJQaXWQ= ; Message-ID: <20051116190622.76583.qmail@web34111.mail.mud.yahoo.com> Date: Wed, 16 Nov 2005 11:06:22 -0800 (PST) From: Kenny Simpson Subject: Re: mmap over nfs leads to excessive system load To: Trond Myklebust Cc: Andrew Morton , linux-kernel@vger.kernel.org In-Reply-To: <1132163057.8811.15.camel@lade.trondhjem.org> 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: 1313 Lines: 40 --- Trond Myklebust wrote: > OK, please back out the patch that I sent you, and try this one instead. With jumbo frames, the profile is even happier: (throughput is a little higher and CPU usage is a little lower too) samples % symbol name 74463 12.1129 skb_copy_bits 30351 4.9372 __lookup_tag 24520 3.9887 _spin_lock 20353 3.3108 _spin_lock_irqsave 19306 3.1405 __copy_from_user_ll 15393 2.5040 __copy_user_zeroing_intel 10014 1.6290 isolate_lru_pages 9002 1.4644 sub_preempt_count 7997 1.3009 debug_smp_processor_id 7691 1.2511 schedule 6999 1.1385 shrink_list 6699 1.0897 tcp_sendmsg 6669 1.0848 radix_tree_delete 6532 1.0626 _write_lock_irqsave 6413 1.0432 __mod_page_state 6170 1.0037 acpi_safe_halt Again... this is excellent. So will this make 2.6.16? or can this be called a bug fix for 2.6.15? -Kenny __________________________________ Yahoo! FareChase: Search multiple travel sites in one click. http://farechase.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/