Re: [boost] [thread] best practice to lock multiple mutexes

From: Peter Dimov (pdimov_at_[hidden])
Date: 2008-02-08 17:14:51

Howard Hinnant:

> Here are results (dating around 3 years ago):
>
> In order:  63 seconds.
> try/back off/without yield:  47 seconds.
> try/back off/with yield:  34 seconds.

With Alexander Terekhov's "swap-based mutex", I'm not seeing a significant 
difference between the versions with and without yield. The penalty likely 
comes from spin-waits in lock() (which is why they're evil).