From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin LaHaise Subject: r8169 tx problem (1s pause with ping) Date: Tue, 12 Jun 2007 20:41:54 -0400 Message-ID: <20070613004154.GA4187@kvack.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: netdev@vger.kernel.org Return-path: Received: from kanga.kvack.org ([66.96.29.28]:53328 "EHLO kanga.kvack.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750950AbXFMAmL (ORCPT ); Tue, 12 Jun 2007 20:42:11 -0400 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hello folks, I'm seeing something odd with r8169 on FC7: doing a ping -s 1600 alternates between a 1s latency and sub 1ms. Has anyone else seen anything like this? The system in question is an Asus M2A-VM with an onboard RTL8111 (I think). NAPI doesn't seem to make a difference. The kernel in question is currently a vanilla 2.6.21.5. Sub-mtu sized packets behave normally. 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01) PING 1.2.3.4 (1.2.3.4) 1600(1628) bytes of data. 1608 bytes from 1.2.3.4: icmp_seq=1 ttl=64 time=1000 ms 1608 bytes from 1.2.3.4: icmp_seq=2 ttl=64 time=0.816 ms 1608 bytes from 1.2.3.4: icmp_seq=3 ttl=64 time=1000 ms 1608 bytes from 1.2.3.4: icmp_seq=4 ttl=64 time=0.661 ms -ben -- "Time is of no importance, Mr. President, only life is important." Don't Email: .