Return-path: Received: from xc.sipsolutions.net ([83.246.72.84]:40233 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751005AbZLIIYy (ORCPT ); Wed, 9 Dec 2009 03:24:54 -0500 Subject: Re: regression: rt2561 frequent "Arrived at non-free entry" errors in 2.6.32 From: Johannes Berg To: Gertjan van Wingerde Cc: Stefan Lippers-Hollmann , Andi Kleen , linux-wireless@vger.kernel.org, Tim Blechmann , rjw@sisk.pl, IvDoorn@gmail.com, linville@tuxdriver.com In-Reply-To: <4B1F4A88.5000803@gmail.com> References: <20091204233202.GA13658@basil.fritz.box> <200912082339.16893.s.L-H@gmx.de> <1260312016.32227.6.camel@johannes.local> <200912090053.25798.s.L-H@gmx.de> <4B1F4A88.5000803@gmail.com> Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-MeW3At4olF/OzfOZ3TCH" Date: Wed, 09 Dec 2009 09:24:19 +0100 Message-ID: <1260347060.28424.0.camel@johannes.local> Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: --=-MeW3At4olF/OzfOZ3TCH Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2009-12-09 at 07:58 +0100, Gertjan van Wingerde wrote: > > - pinging rt61pci results in rather unsteady response times (packet los= s=20 > > can happen, but rarely), which might be a side effect of the card try= ing=20 > > to sleep. > > # ping rt61 > > PING rt61 (192.168.0.71): 56 data bytes > > 64 bytes from 192.168.0.71: seq=3D0 ttl=3D64 time=3D1016.131 ms > > 64 bytes from 192.168.0.71: seq=3D1 ttl=3D64 time=3D17.574 ms > > 64 bytes from 192.168.0.71: seq=3D2 ttl=3D64 time=3D906.219 ms > > 64 bytes from 192.168.0.71: seq=3D3 ttl=3D64 time=3D1.499 ms > My guess is that this is due to powersaving being enabled, where mac80211= and > the device go in powersaving mode and then it takes a while before packet= s > reach the device. I don't think this signifies a bug of some kind. >=20 > Johannes, is this correct expected behavior of powersaving? Well, it shouldn't be quite that high, unless your beacon interval is 1000 TU. johannes --=-MeW3At4olF/OzfOZ3TCH Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJLH16vAAoJEODzc/N7+QmaInMP/RGLgK25VOfJ7SF44hqOzijk MLsGKvdfH6F6MOW/uwhOJA9TyHln/zIka81fSsvVH3HO22LEc2sUYNsUj9r5Cqsf htHbqQQ9yCj1L0LmzzKrImmrqb+Zc4s44c3rSg0jj6etXXw7ltiZmMPj7WF4gWoT hT6b8/Jl0dkDss3k4w6GJx5AaWHsWBYZfWMLm32I3D+L0z+9Q75E9WAY0thFhk3D QonmCH0XTYRL6VqwIo1DXBrPhos1BsR7XYIQBDJWk1+5KExW9KMw+DxZkTwkayYM 0gv9aaKb87wMudOLpODd7cWy6UMow3yXgfkq/nW9Q8MIdG0+WpZtA5US+RrGqnqY Myc6KmMYegn2C77uJ9FfeSYB7+8kVEEzQQylMai80pFX0wtTCTxQ5Bbhy+xoN1Ea 0x06+zGsjqlRZaEujylei9uAEBEzZol2WRqiodRIQLhAOfWHbIB5voxVgO7Ni1iV NH4pSl+BJGCpjv0yv0utYGTX3Gcy1VkPttQjX0oEICwnbxUjzCpd4ERDlVi5d5qh Sr7IQMgZCI01CSGIIHSuZSVLJRYToHOhwhXaukSXRmPYU827j78XHBZoKoaz4kh3 zTMZZ/ijYknoFZuWg/A2xHmfRvZQP3hGMqeYlFN52xt8CP4bLVCnVFCTXNDo7ERe tGPiCMThU2+yGRooxIvy =kqQg -----END PGP SIGNATURE----- --=-MeW3At4olF/OzfOZ3TCH--