Re: 2.6.14-rt13

From: Ingo Molnar
Date: Wed Nov 16 2005 - 03:40:38 EST

* K.R. Foley <kr@xxxxxxxxxx> wrote:

> > - big RCU torture-test update (Paul E. McKenney)
> In case anyone else makes the same mistake I did. If you are using the
> same config from a previous build, you may have RCU_TORTURE_TEST=Y
> (not module) and not even know it when running RT patches. You will
> however definitely notice it if you use the config to build a non RT
> kernel like 2.6.15-rc1. The previous RT patch defaulted
> RCU_TORTURE_TEST=y. By the way, the fact that I didn't even notice
> that the torture test was running with the RT kernel is a true measure
> of how well things have progressed. :-)

yeah - i left it on by default, i usually do that with new debugging
features, to give new code more exposure. In other words, mass
distributed RCU stress-testing by stealth ;-)

I'll make it default-off once the RCU related changes have calmed down.
The rcutorture kernel threads run at nice +19 so they should be barely
noticeable. (except for a sudden and unexplained spike in the world's
power consumption, and the resulting energy crisis ;-)

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