Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755260AbXEFUWh (ORCPT ); Sun, 6 May 2007 16:22:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755281AbXEFUWh (ORCPT ); Sun, 6 May 2007 16:22:37 -0400 Received: from dilbert.robsims.com ([209.120.158.98]:34416 "EHLO mail.robsims.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755280AbXEFUWf (ORCPT ); Sun, 6 May 2007 16:22:35 -0400 Date: Sun, 6 May 2007 14:22:34 -0600 From: Rob Sims To: Stephen Hemminger Cc: Thomas Glanzmann , LKML , Andreas =?iso-8859-1?Q?Allg=F6wer?= , Michael Gernoth Subject: Re: sky2 PHY setup Message-ID: <20070506202234.GB17957@robsims.com> References: <20070203073012.GO1693@cip.informatik.uni-erlangen.de> <20070205090429.31d7bd32@freekitty> <20070222193611.GR20035@cip.informatik.uni-erlangen.de> <20070316002912.GB17594@cip.informatik.uni-erlangen.de> <20070316095932.5e920222@freekitty> <20070316203645.GA24699@robsims.com> <20070316141648.15d7ff75@freekitty> <20070327032406.GA25659@robsims.com> <20070404111930.46321146@freekitty> <20070407175348.GB18457@robsims.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="xXmbgvnjoT4axfJE" Content-Disposition: inline In-Reply-To: <20070407175348.GB18457@robsims.com> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2062 Lines: 54 --xXmbgvnjoT4axfJE Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Apr 07, 2007 at 11:53:48AM -0600, Rob Sims wrote: > On Wed, Apr 04, 2007 at 11:19:30AM -0700, Stephen Hemminger wrote: =2E..=20 > > You might have over run the hub and it wedged. Try doing: > > ethtool -r eth0 > > that forces a down/up >=20 > I'm still seeing throughput drop to under 1 Mb/s (50-100kB/s) > periodically. I did an ethtool -S and ethtool -d to capture state. > (sky2-fail.log). I ran ethtool -r and retested; no change > (sky2-ethtool-r.log). Finally, ifdown - rmmod - modprobe - ifup, which > restored to Gigabit speeds (96+ MB/s), (sky2-modcycle.log). >=20 > Please let me know if there's anything else I can poke into. As a > reminder, this is a 88E8053 r20. Next time I see a degradation, I'll > try cycling the switch. I continued to have problems with this interface. I tried bringing up the second interface on the motherboard; I added a cable to the same hub as the first interface and configured an address on the same subnet. I intended to see if I could use it as a redundant interface for when the first hung. I haven't been able to test that, because now I haven't seen a hang or slowdown since I brought the second interface up. =20 Could the idle interface have generated an interrupt which is never cleared because the interface is down? Or something similar? --=20 Rob --xXmbgvnjoT4axfJE Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFGPjkKnvKppSZW8osRAlBrAJ42L/v9igGfQBmHu2vxVsUuzyfvowCfQZvZ dgaUv/4poMV4E8u1yoZf28M= =H28D -----END PGP SIGNATURE----- --xXmbgvnjoT4axfJE-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/