Return-path: Received: from nf-out-0910.google.com ([64.233.182.185]:59376 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752000AbYIWQVA (ORCPT ); Tue, 23 Sep 2008 12:21:00 -0400 Received: by nf-out-0910.google.com with SMTP id d3so736557nfc.21 for ; Tue, 23 Sep 2008 09:20:56 -0700 (PDT) Message-ID: (sfid-20080923_182106_920280_DAF33F1C) Date: Tue, 23 Sep 2008 09:20:55 -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: <20080922065453.GD19580@tesla> <20080922080632.GA20446@tesla> <43e72e890809220901y162636fu63ed133f0a0c235@mail.gmail.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: MjAwOC85LzIzIFN0ZXZlbiBOb29uYW4gPHN0ZXZlbkB1cGxpbmtsYWJzLm5ldD46Cj4gMjAwOC85 LzIzIFN0ZXZlbiBOb29uYW4gPHN0ZXZlbkB1cGxpbmtsYWJzLm5ldD46Cj4+IE9uIE1vbiwgU2Vw IDIyLCAyMDA4IGF0IDk6MDEgQU0sIEx1aXMgUi4gUm9kcmlndWV6Cj4+IDxscm9kcmlndWV6QGF0 aGVyb3MuY29tPiB3cm90ZToKPj4+IE9uIE1vbiwgU2VwIDIyLCAyMDA4IGF0IDg6MTEgQU0sIFN0 ZXZlbiBOb29uYW4gPHN0ZXZlbkB1cGxpbmtsYWJzLm5ldD4gd3JvdGU6Cj4+Pj4gT24gTW9uLCBT ZXAgMjIsIDIwMDggYXQgMTowNiBBTSwgTHVpcyBSLiBSb2RyaWd1ZXoKPj4+PiA8bHJvZHJpZ3Vl ekBhdGhlcm9zLmNvbT4gd3JvdGU6Cj4+Pj4+IFBsZWFzZSB0ZXN0IHRoZSBmb2xsb3dpbmcgcGF0 Y2guCj4+Pj4+Cj4+Pj4+IGRpZmYgLS1naXQgYS9kcml2ZXJzL25ldC93aXJlbGVzcy9hdGg5ay9j b3JlLmMgYi9kcml2ZXJzL25ldC93aXJlbGVzcy9hdGg5ay9jb3JlLmMKPj4+Pj4gaW5kZXggYzI2 MmVmMi4uOWE1MTczOSAxMDA2NDQKPj4+Pj4gLS0tIGEvZHJpdmVycy9uZXQvd2lyZWxlc3MvYXRo OWsvY29yZS5jCj4+Pj4+ICsrKyBiL2RyaXZlcnMvbmV0L3dpcmVsZXNzL2F0aDlrL2NvcmUuYwo+ Pj4+PiBAQCAtNjgxLDEwICs2ODEsMTIgQEAgaW50IGF0aF9vcGVuKHN0cnVjdCBhdGhfc29mdGMg KnNjLCBzdHJ1Y3QgYXRoOWtfY2hhbm5lbCAqaW5pdGlhbF9jaGFuKQo+Pj4+PiAgICAgICAgICog RW5hYmxlIE1JQiBpbnRlcnJ1cHRzIHdoZW4gdGhlcmUgYXJlIGhhcmR3YXJlIHBoeSBjb3VudGVy cy4KPj4+Pj4gICAgICAgICAqIE5vdGUgd2Ugb25seSBkbyB0aGlzIChhdCB0aGUgbW9tZW50KSBm b3Igc3RhdGlvbiBtb2RlLgo+Pj4+PiAgICAgICAgICovCj4+Pj4+ICsjaWYgMAo+Pj4+PiAgICAg ICAgaWYgKGF0aDlrX2h3X3BoeWNvdW50ZXJzKGFoKSAmJgo+Pj4+PiAgICAgICAgICAgICgoc2Mt PnNjX2FoLT5haF9vcG1vZGUgPT0gQVRIOUtfTV9TVEEpIHx8Cj4+Pj4+ICAgICAgICAgICAgIChz Yy0+c2NfYWgtPmFoX29wbW9kZSA9PSBBVEg5S19NX0lCU1MpKSkKPj4+Pj4gICAgICAgICAgICAg ICAgc2MtPnNjX2ltYXNrIHw9IEFUSDlLX0lOVF9NSUI7Cj4+Pj4+ICsjZW5kaWYKPj4+Pj4gICAg ICAgIC8qCj4+Pj4+ICAgICAgICAgKiBTb21lIGhhcmR3YXJlIHByb2Nlc3NlcyB0aGUgVElNIElF IGFuZCBmaXJlcyBhbgo+Pj4+PiAgICAgICAgICogaW50ZXJydXB0IHdoZW4gdGhlIFRJTSBiaXQg aXMgc2V0LiAgRm9yIGhhcmR3YXJlCj4+Pj4+Cj4+Pj4KPj4+PiBJdCBkaWRuJ3QgYXBwbHkgdG8g LXJjNywgYnV0IEkgbWFuYWdlZCB0byBhcHBseSBpdCBtYW51YWxseQo+Pj4+IChhcHBhcmVudGx5 IHlvdSBtYWRlIHRoaXMgZm9yIHdpcmVsZXNzLXRlc3Rpbmc/KSBhbmQgYWRkZWQgdGhlICNpZiAw Lgo+Pj4+IEFmdGVyIDcgaG91cnMgdXB0aW1lIHdpdGggdGhlIGRyaXZlciwgbm8gYXBwYXJlbnQg aW50ZXJydXB0IHN0b3JtLgo+Pj4+Cj4+Pj4gSSdsbCBkbyBtb3JlIHRob3JvdWdoIHRlc3Rpbmcg bGF0ZXIsIGJ1dCBJIGhhdmUgYSAzIGhvdXIgZHJpdmUgdG9kYXksCj4+Pj4gYW5kIHNvbWUgcGFj a2luZyB0byBkbywgc28gaXQnbGwgbmVlZCB0byB3YWl0IGEgYml0Lgo+Pj4KPj4+IFllYWggSSBk aWQgaXQgZm9yIHdpcmVsZXNzLXRlc3RpbmcuIEdvb2QgdG8gaGVhciB0aGlzIHNvIGZhciBoYXMK Pj4+IHNvbHZlZCB0aGUgaXNzdWUuIEknbGwgcG9ydCBpdCB0byAyNyBhbmQgcG9zdCBpdCBvbmNl IEkgZ2V0IHlvdXIKPj4+IGJsZXNzaW5ncyB0aGF0IHRoaXMgZml4ZWQgaXQgYnkgYSBUZXN0ZWQt YnkuCj4+Pgo+Pgo+PiBPa2F5LiBJJ20gaW4gU2VhdHRsZSBub3cuCj4+Cj4+IFllcywgaXQgc29s dmVkIHRoZSBpc3N1ZSwgYnV0IHN1cmVseSBhbiAjaWYgMCBpc24ndCBhIHByb3BlciBzb2x1dGlv bi4KPj4gV2hhdCdzIHRoZSBhY3R1YWwgYnVnIGhlcmU/IEknbSBhZnJhaWQgdGhlIG1lYW5pbmcg b2Ygd2hhdCdzIGdvaW5nIG9uCj4+IGhlcmUgaXNuJ3QgZXhhY3RseSBpbnR1aXRpdmUuCj4+Cj4+ IEFsc28sIEknbSBkb2luZyBhbiA4IGhvdXIgcnVuIHdpdGggdGhpcyBwYXRjaCB0b25pZ2h0LiBN YXliZSBtb3JlLAo+PiBkZXBlbmRzIG9uIHdoZW4gSSB3YWtlIHVwLiA7KQo+Pgo+PiBJIHRoaW5r IGlmIHRoaXMgcmVzb2x2ZXMgdGhlIGlzc3VlIG9uIHR3byBzZXBhcmF0ZSCXOCBob3VyIHJ1bnMs IGl0Cj4+IHNob3VsZCBiZSBjb25zaWRlcmVkIHRoZSBzb2x1dGlvbiB0byB0aGUgaXNzdWUsIHVu bGVzcyBpdCByZXN1cmZhY2VzLgo+Pgo+Cj4gSSBhbSBvbmx5IDI1IG1pbnV0ZXMgaW50byB0aGUg cnVuLCBidXQgSSBmZWVsIHRoaXMgaXMgd29ydGggcmVwb3J0aW5nCj4gYmVmb3JlIEkgZm9yZ2V0 LiBObyBJUlEgc3Rvcm0gdGh1cyBmYXIsIGJ1dCB0aGUgY29ubmVjdGlvbiBrZWVwcwo+IGRyb3Bw aW5nLiBPciByYXRoZXIsIGl0IGRvZXNuJ3QgZGlzYXNzb2NpYXRlLCBidXQgd2hpbGUgSSB3YXMK PiB0cmFuc2ZlcnJpbmcgYSBsYXJnZSBmaWxlLCBpdCBoYWQgcG9pbnRzIG9mIHRpbWUgd2hlcmUg aXQgc3VkZGVubHkKPiBsb3N0IGFuZCByZWFjcXVpcmVkIHRoZSBjb25uZWN0aW9uIChzaWduYWwg c3RyZW5ndGggZmx1Y3R1YXRlcyB3aWxkbHkKPiBiZXR3ZWVuIDcwLTkwJSBhbmQgdGhlbiAwJSBm b3IgYSBzZWNvbmQsIGFuZCB0aGVuIGJhY2sgdG8KPiBmbHVjdHVhdGluZykuIFBlcmhhcHMgdGhp cyBpcyByZWxhdGVkIHRvIHRoZSBsYWNrIG9mIGFnZ3JlZ2F0aW9uPwo+CgpUaGlzIDggaG91ciB0 ZXN0IHBhc3Nlcy4KCi0gU3RldmVuCg==