On 13-03-06 10:58 AM, Thomas Gleixner wrote: > On Wed, 6 Mar 2013, Paul Gortmaker wrote: >> So, I guess the question is, whether we want to try and make the system >> fail in a more meaningful way -- kind of like the rt throttling message >> does - as it lets users know they've hit the wall? Something watching > > That Joe Doe should have noticed the throttler message, which came > before the stall, shouldn't he?
Actually it isn't showing up at all -- just the RCU stall itself. Now that you mention it, I do wonder why the throttler message isn't tripped though... Paul. -- > >> for kstat_incr_softirqs traffic perhaps? Or other options? > > The rcu stall detector could use the softirq counter and if it did not > change in the stall period print: "Caused by softirq starvation" or > something like that. > > Thanks, > > tglx > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
