Re: [Boost-users] Threads Don't Take Turns Under Linux (UbuntuGutsy Gibbon)

From: Hughes, James (jhughes_at_[hidden])
Date: 2008-03-17 11:09:53

> -----Original Message-----
> From: boost-users-bounces_at_[hidden] 
> [mailto:boost-users-bounces_at_[hidden]] On Behalf Of Zeljko Vrba
> Sent: 17 March 2008 15:04
> To: boost-users_at_[hidden]
> Subject: Re: [Boost-users] Threads Don't Take Turns Under 
> Linux (UbuntuGutsy Gibbon)
> 
> On Mon, Mar 17, 2008 at 09:42:46AM -0400, Hal Vaughan wrote:
> > 
> > Am I doing something wrong or is there a setting I need to change?
> > 
> That's normal behavior; threads are scheduled by the OS.  In 
> your case, the thread fills the buffer faster then its 
> timeslice expires, so you see buffer being filled/emptied in 
> "batches".  If you want them to be interleaved, lower the 
> buffer size or try running on an SMP machine.
> 

Or put a usleep(0) in the thread to force the timeslice to expire? IIRC.

James

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