[M3devel] userthreads vs. pthreads performance?

[Tony Hosking]

Yep.  Call.  Atomic ops.  All expensive.


Antony Hosking | Associate Professor | Computer Science | Purdue University
305 N. University Street | West Lafayette | IN 47907 | USA
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On 28 Mar 2010, at 14:32, Dragiša Durić wrote:

> Fast glance shows there is no overhead in code? Just passthrough of
> MUTEX field to pthread_mutex_lock()? And inefficiency comes from there?
> 
> On Sun, 2010-03-28 at 12:55 -0400, Tony Hosking wrote:
>> Yes, we need to implement thin locks and biased locks.  These have
>> minimal overhead for locks held mostly by just one thread.
> -- 
> Dragiša Durić <dragisha at m3w.org>

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