Return-path: Received: from nf-out-0910.google.com ([64.233.182.187]:5041 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752053AbYIWHzi (ORCPT ); Tue, 23 Sep 2008 03:55:38 -0400 Received: by nf-out-0910.google.com with SMTP id d3so657526nfc.21 for ; Tue, 23 Sep 2008 00:55:36 -0700 (PDT) Message-ID: (sfid-20080923_095543_223369_6D4AC3B7) Date: Tue, 23 Sep 2008 00:55:35 -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" , "Johannes Berg" , "Ingo Molnar" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=KOI8-R References: <43e72e890809201426x61c94bfej2dcda1c178be81b@mail.gmail.com> <20080922065453.GD19580@tesla> <20080922080632.GA20446@tesla> <43e72e890809220901y162636fu63ed133f0a0c235@mail.gmail.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: MjAwOC85LzIzIFN0ZXZlbiBOb29uYW4gPHN0ZXZlbkB1cGxpbmtsYWJzLm5ldD46Cj4gT24gTW9u LCBTZXAgMjIsIDIwMDggYXQgOTowMSBBTSwgTHVpcyBSLiBSb2RyaWd1ZXoKPiA8bHJvZHJpZ3Vl ekBhdGhlcm9zLmNvbT4gd3JvdGU6Cj4+IE9uIE1vbiwgU2VwIDIyLCAyMDA4IGF0IDg6MTEgQU0s IFN0ZXZlbiBOb29uYW4gPHN0ZXZlbkB1cGxpbmtsYWJzLm5ldD4gd3JvdGU6Cj4+PiBPbiBNb24s IFNlcCAyMiwgMjAwOCBhdCAxOjA2IEFNLCBMdWlzIFIuIFJvZHJpZ3Vlego+Pj4gPGxyb2RyaWd1 ZXpAYXRoZXJvcy5jb20+IHdyb3RlOgo+Pj4+IFBsZWFzZSB0ZXN0IHRoZSBmb2xsb3dpbmcgcGF0 Y2guCj4+Pj4KPj4+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9uZXQvd2lyZWxlc3MvYXRoOWsvY29y ZS5jIGIvZHJpdmVycy9uZXQvd2lyZWxlc3MvYXRoOWsvY29yZS5jCj4+Pj4gaW5kZXggYzI2MmVm Mi4uOWE1MTczOSAxMDA2NDQKPj4+PiAtLS0gYS9kcml2ZXJzL25ldC93aXJlbGVzcy9hdGg5ay9j b3JlLmMKPj4+PiArKysgYi9kcml2ZXJzL25ldC93aXJlbGVzcy9hdGg5ay9jb3JlLmMKPj4+PiBA QCAtNjgxLDEwICs2ODEsMTIgQEAgaW50IGF0aF9vcGVuKHN0cnVjdCBhdGhfc29mdGMgKnNjLCBz dHJ1Y3QgYXRoOWtfY2hhbm5lbCAqaW5pdGlhbF9jaGFuKQo+Pj4+ICAgICAgICAgKiBFbmFibGUg TUlCIGludGVycnVwdHMgd2hlbiB0aGVyZSBhcmUgaGFyZHdhcmUgcGh5IGNvdW50ZXJzLgo+Pj4+ ICAgICAgICAgKiBOb3RlIHdlIG9ubHkgZG8gdGhpcyAoYXQgdGhlIG1vbWVudCkgZm9yIHN0YXRp b24gbW9kZS4KPj4+PiAgICAgICAgICovCj4+Pj4gKyNpZiAwCj4+Pj4gICAgICAgIGlmIChhdGg5 a19od19waHljb3VudGVycyhhaCkgJiYKPj4+PiAgICAgICAgICAgICgoc2MtPnNjX2FoLT5haF9v cG1vZGUgPT0gQVRIOUtfTV9TVEEpIHx8Cj4+Pj4gICAgICAgICAgICAgKHNjLT5zY19haC0+YWhf b3Btb2RlID09IEFUSDlLX01fSUJTUykpKQo+Pj4+ICAgICAgICAgICAgICAgIHNjLT5zY19pbWFz ayB8PSBBVEg5S19JTlRfTUlCOwo+Pj4+ICsjZW5kaWYKPj4+PiAgICAgICAgLyoKPj4+PiAgICAg ICAgICogU29tZSBoYXJkd2FyZSBwcm9jZXNzZXMgdGhlIFRJTSBJRSBhbmQgZmlyZXMgYW4KPj4+ PiAgICAgICAgICogaW50ZXJydXB0IHdoZW4gdGhlIFRJTSBiaXQgaXMgc2V0LiAgRm9yIGhhcmR3 YXJlCj4+Pj4KPj4+Cj4+PiBJdCBkaWRuJ3QgYXBwbHkgdG8gLXJjNywgYnV0IEkgbWFuYWdlZCB0 byBhcHBseSBpdCBtYW51YWxseQo+Pj4gKGFwcGFyZW50bHkgeW91IG1hZGUgdGhpcyBmb3Igd2ly ZWxlc3MtdGVzdGluZz8pIGFuZCBhZGRlZCB0aGUgI2lmIDAuCj4+PiBBZnRlciA3IGhvdXJzIHVw dGltZSB3aXRoIHRoZSBkcml2ZXIsIG5vIGFwcGFyZW50IGludGVycnVwdCBzdG9ybS4KPj4+Cj4+ PiBJJ2xsIGRvIG1vcmUgdGhvcm91Z2ggdGVzdGluZyBsYXRlciwgYnV0IEkgaGF2ZSBhIDMgaG91 ciBkcml2ZSB0b2RheSwKPj4+IGFuZCBzb21lIHBhY2tpbmcgdG8gZG8sIHNvIGl0J2xsIG5lZWQg dG8gd2FpdCBhIGJpdC4KPj4KPj4gWWVhaCBJIGRpZCBpdCBmb3Igd2lyZWxlc3MtdGVzdGluZy4g R29vZCB0byBoZWFyIHRoaXMgc28gZmFyIGhhcwo+PiBzb2x2ZWQgdGhlIGlzc3VlLiBJJ2xsIHBv cnQgaXQgdG8gMjcgYW5kIHBvc3QgaXQgb25jZSBJIGdldCB5b3VyCj4+IGJsZXNzaW5ncyB0aGF0 IHRoaXMgZml4ZWQgaXQgYnkgYSBUZXN0ZWQtYnkuCj4+Cj4KPiBPa2F5LiBJJ20gaW4gU2VhdHRs ZSBub3cuCj4KPiBZZXMsIGl0IHNvbHZlZCB0aGUgaXNzdWUsIGJ1dCBzdXJlbHkgYW4gI2lmIDAg aXNuJ3QgYSBwcm9wZXIgc29sdXRpb24uCj4gV2hhdCdzIHRoZSBhY3R1YWwgYnVnIGhlcmU/IEkn bSBhZnJhaWQgdGhlIG1lYW5pbmcgb2Ygd2hhdCdzIGdvaW5nIG9uCj4gaGVyZSBpc24ndCBleGFj dGx5IGludHVpdGl2ZS4KPgo+IEFsc28sIEknbSBkb2luZyBhbiA4IGhvdXIgcnVuIHdpdGggdGhp cyBwYXRjaCB0b25pZ2h0LiBNYXliZSBtb3JlLAo+IGRlcGVuZHMgb24gd2hlbiBJIHdha2UgdXAu IDspCj4KPiBJIHRoaW5rIGlmIHRoaXMgcmVzb2x2ZXMgdGhlIGlzc3VlIG9uIHR3byBzZXBhcmF0 ZSCXOCBob3VyIHJ1bnMsIGl0Cj4gc2hvdWxkIGJlIGNvbnNpZGVyZWQgdGhlIHNvbHV0aW9uIHRv IHRoZSBpc3N1ZSwgdW5sZXNzIGl0IHJlc3VyZmFjZXMuCj4KCkkgYW0gb25seSAyNSBtaW51dGVz IGludG8gdGhlIHJ1biwgYnV0IEkgZmVlbCB0aGlzIGlzIHdvcnRoIHJlcG9ydGluZwpiZWZvcmUg SSBmb3JnZXQuIE5vIElSUSBzdG9ybSB0aHVzIGZhciwgYnV0IHRoZSBjb25uZWN0aW9uIGtlZXBz CmRyb3BwaW5nLiBPciByYXRoZXIsIGl0IGRvZXNuJ3QgZGlzYXNzb2NpYXRlLCBidXQgd2hpbGUg SSB3YXMKdHJhbnNmZXJyaW5nIGEgbGFyZ2UgZmlsZSwgaXQgaGFkIHBvaW50cyBvZiB0aW1lIHdo ZXJlIGl0IHN1ZGRlbmx5Cmxvc3QgYW5kIHJlYWNxdWlyZWQgdGhlIGNvbm5lY3Rpb24gKHNpZ25h bCBzdHJlbmd0aCBmbHVjdHVhdGVzIHdpbGRseQpiZXR3ZWVuIDcwLTkwJSBhbmQgdGhlbiAwJSBm b3IgYSBzZWNvbmQsIGFuZCB0aGVuIGJhY2sgdG8KZmx1Y3R1YXRpbmcpLiBQZXJoYXBzIHRoaXMg aXMgcmVsYXRlZCB0byB0aGUgbGFjayBvZiBhZ2dyZWdhdGlvbj8KCi0gU3RldmVuCg==