Return-path: Received: from mail-ob0-f174.google.com ([209.85.214.174]:58814 "EHLO mail-ob0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751086Ab2FSJli convert rfc822-to-8bit (ORCPT ); Tue, 19 Jun 2012 05:41:38 -0400 MIME-Version: 1.0 In-Reply-To: <20120619085137.337838c0@xenia.leun.net> References: <20120619085137.337838c0@xenia.leun.net> Date: Tue, 19 Jun 2012 15:11:38 +0530 Message-ID: (sfid-20120619_114157_445931_C9F6FE6E) Subject: Re: ath9k_htc: Every 2nd packet 1000ms delayed in recent kernels From: Mohammed Shafi To: Michael Leun Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi, On Tue, Jun 19, 2012 at 12:21 PM, Michael Leun wrote: > Hi, > > ne-wlan1@elektra:/home/ml4> ping 192.168.2.1 > PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data. > 64 bytes from 192.168.2.1: icmp_seq=1 ttl=64 time=2010 ms > 64 bytes from 192.168.2.1: icmp_seq=2 ttl=64 time=1011 ms > 64 bytes from 192.168.2.1: icmp_seq=3 ttl=64 time=11.5 ms > 64 bytes from 192.168.2.1: icmp_seq=4 ttl=64 time=1.12 ms > 64 bytes from 192.168.2.1: icmp_seq=5 ttl=64 time=1002 ms > 64 bytes from 192.168.2.1: icmp_seq=6 ttl=64 time=3.83 ms > 64 bytes from 192.168.2.1: icmp_seq=7 ttl=64 time=1003 ms > 64 bytes from 192.168.2.1: icmp_seq=8 ttl=64 time=4.10 ms > 64 bytes from 192.168.2.1: icmp_seq=9 ttl=64 time=1003 ms > 64 bytes from 192.168.2.1: icmp_seq=10 ttl=64 time=3.95 ms > 64 bytes from 192.168.2.1: icmp_seq=11 ttl=64 time=1003 ms > 64 bytes from 192.168.2.1: icmp_seq=12 ttl=64 time=3.78 ms > > > Please note the additional delay of ~1000ms every 2nd packet. This is > Kernel 3.4.3, have seen it in 3.4.2 also. Does NOT happen in 3.3.1. > > Is this Issue already known? If so, I can save the work bisecting... looks like some one reported this bug in kernel bugzilla. would be saving us lot of time if you can bisect it! > > Happens with two different ath9k_htc cards: > > Bus 002 Device 012: ID 0846:9018 NetGear, Inc. WNDA3200 802.11abgn Wireless Adapter [Atheros AR7010+AR9280] > Bus 002 Device 004: ID 0cf3:7015 Atheros Communications, Inc. TP-Link TL-WN821N v3 802.11n [Atheros AR7010+AR9287] > > Does NOT happen with an atk9k (mini pci express) card. thanks for the info! > > -- > MfG, > > Michael Leun > > -- > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at ?http://vger.kernel.org/majordomo-info.html -- thanks, shafi