Re: BQL support in gianfar causes network hickup
From: Eric Dumazet <hidden>
Date: 2012-11-27 12:36:58
On Tue, 2012-11-27 at 10:36 +0100, Keitel, Tino (ALC NetworX GmbH) wrote:
On Mo, 2012-11-26 at 09:17 -0800, Eric Dumazet wrote:quoted
On Mon, 2012-11-26 at 18:08 +0100, Keitel, Tino (ALC NetworX GmbH) wrote:quoted
On Mo, 2012-11-26 at 08:34 -0800, Eric Dumazet wrote:quoted
On Mon, 2012-11-26 at 11:01 +0100, Tino Keitel wrote:quoted
On Sat, Nov 24, 2012 at 15:43:36 -0800, Eric Dumazet wrote: [...]quoted
Hmm, I wonder if BQL makes a particular bug showing more often. I see gianfar uses a very small watchdog_timeo of 1 second, while many drivers use 5 seconds. What happens if you change this to 5 seconds ?I still got the trace and a failing ptp client.Thanks. Is this bug easy to trigger ? I suspect a core issue and a race, likely to happen on your (non x86) hardware Could you add the following debugging patch ?No visible difference:OK it seems you trigger the problem fast ! Please try the following as well :Hi, yes, it can be triggered within 2 minutes. The patch makes no difference:
Can you reproduce the problem using a single cpu ?