Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761130AbYHVCY7 (ORCPT ); Thu, 21 Aug 2008 22:24:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753714AbYHVCYr (ORCPT ); Thu, 21 Aug 2008 22:24:47 -0400 Received: from relay2.globalproof.net ([194.146.153.25]:34548 "EHLO relay2.globalproof.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753416AbYHVCYq (ORCPT ); Thu, 21 Aug 2008 22:24:46 -0400 From: Denys Fedoryshchenko Organization: Virtual ISP To: netdev@vger.kernel.org Subject: Re: loaded router, excessive getnstimeofday in oprofile Date: Fri, 22 Aug 2008 05:23:28 +0300 User-Agent: KMail/1.9.9 Cc: linux-kernel@vger.kernel.org References: <200808220457.40892.denys@visp.net.lb> In-Reply-To: <200808220457.40892.denys@visp.net.lb> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200808220523.28242.denys@visp.net.lb> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1457 Lines: 36 On Friday 22 August 2008, Denys Fedoryshchenko wrote: Most significant event types where i notice getnstimeofday at top of list. Additions: Counted MEMORY_REQUESTS events (Memory requests by type) with a unit mask of 0x01 (Requests to non-cacheable (UC) memory) count 5000 samples % samples % symbol name 129 31.0843 596 31.1879 getnstimeofday 54 13.0120 251 13.1345 __napi_schedule 36 8.6747 178 9.3145 default_idle 34 8.1928 164 8.5819 irq_entries_start 23 5.5422 143 7.4830 __do_softirq and CPU: AMD64 processors, speed 2193.74 MHz (estimated) Counted INTERRUPTS_MASKED_CYCLES events (Cycles with interrupts masked (IF=0)) with a unit mask of 0x00 (No unit mask) count 5000 samples % symbol name 630015 62.4741 getnstimeofday 28634 2.8394 get_next_timer_interrupt 23279 2.3084 __slab_alloc 15775 1.5643 schedule 14765 1.4641 __slab_free 11154 1.1061 native_read_tsc 10953 1.0861 kmem_cache_alloc 10918 1.0827 tick_nohz_stop_sched_tick 10752 1.0662 update_wall_time 10430 1.0343 net_rx_action 10220 1.0134 __do_softirq 9895 0.9812 __update_sched_clock -- 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/