Re: [QUESTION ON BUG] the rcu stall issue could not be reproduced

From: Mike Galbraith
Date: Fri Jul 20 2012 - 03:00:29 EST

On Fri, 2012-07-20 at 11:09 +0800, Michael Wang wrote:
> Hi, Mike, Martin, Dan
> I'm currently taking an eye on the rcu stall issue which was reported by
> you in the mail:
> rcu: endless stalls
> From: Mike Galbraith
> linux-3.4-rc7: rcu_sched self-detected stall on CPU
> From: Martin Mokrejs
> RCU stalls in linux-next
> From: Dan Carpenter
> I try to reproduce the issue on my X86 server with 12 cpu

The 'endless stalls' box was 341.33333 times larger. Dunno if you can
even set a serial port slow enough to approximate all cores trying to
gripe through a single pinhole simultaneously.


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