Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule

From: Sebastian Andrzej Siewior
Date: Fri Apr 08 2016 - 10:51:23 EST


On 04/08/2016 04:16 PM, Mike Galbraith wrote:
>> okay. and how did you trigger this? Just Steven's script or was there
>> more to it?
>
> I run stockfish, futextest, hackbench and tbench with it, terminating
> and restarting them at random intervals just to make sure nobody gets
> into a comfortable little rut. Stockfish and tbench are sized as to
> not saturate the box, hackbench runs periodically (and with no args to
> turn it into a hog), futextest run.sh just does its normal thing.

Is there anything you can hand me over?

> Trying to grab an rtmutex while queued on an rtmutex... doesn't matter
> much if it's the lock that likes to deadlock us, or the one you added
> instead of making that blasted lock really really dead.

Yeah, doesn't look too good.

> -Mike
>
Sebastian