Return-path: Received: from nf-out-0910.google.com ([64.233.182.191]:11871 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751536AbYITVSv (ORCPT ); Sat, 20 Sep 2008 17:18:51 -0400 Received: by nf-out-0910.google.com with SMTP id d3so337728nfc.21 for ; Sat, 20 Sep 2008 14:18:48 -0700 (PDT) Message-ID: (sfid-20080920_231910_580186_F1A6ECD6) Date: Sat, 20 Sep 2008 14:18:48 -0700 From: "Steven Noonan" To: "Luis R. Rodriguez" Subject: Re: [ath9k-devel] ath9k: massive unexplained latency in 2.6.27 (rc5, rc6, probably others) Cc: linux-wireless , LKML , "Senthilkumar Balasubramanian" , "ath9k-devel@lists.ath9k.org" , "Luis Rodriguez" , "Ingo Molnar" In-Reply-To: <43e72e890809201357y1413a151r85aad7cc16440cf4@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 References: <20080919175824.GA5626@senthil-lnx.users.atheros.com> <20080919182322.GB7027@tesla> <20080919235305.GD11665@tesla> <43e72e890809191813n95579f5h83e92b0ba1f95a44@mail.gmail.com> <43e72e890809201357y1413a151r85aad7cc16440cf4@mail.gmail.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Sat, Sep 20, 2008 at 1:57 PM, Luis R. Rodriguez wrote: > So here's what we need to do -- try to zero on in what causes this IRQ > storm. How is the best way to approach this? I assume ATH_DBG_INTERRUPT and pray like hell my /var partition doesn't fill up first? Maybe I'll just symlink /var/log/messages to a file on a substantially larger pattition... > Most likely its some strange event that triggers it, perhaps > some sort of noise which makes the device try to adapt and hits a path > we are not handling correctly yet. Can you provide the initial log of > when ath9k gets loaded? This tells us what card it is, like AR5416 or > AR9280, etc. [10238.347956] ath9k: 0.1 [10238.348028] vendor=8086 device=27d2 [10238.348033] ath9k 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 [10238.348050] ath9k 0000:03:00.0: setting latency timer to 64 [10238.480781] phy1: Selected rate control algorithm 'ath9k_rate_control' [10238.483320] phy1: Atheros 5416: mem=0xffffc20000060000, irq=17 It claims to be a 5416, but I was under the impression that it was the 5418 that came with the MacBook Pro.