THREADS use 100 % CPU all the time

[matthiasjanes at gmx.net]

On Apr 11, 1:36 pm, "A.B., Khalid" <kha... at yahoo.com> wrote:
> On Apr 11, 2:38 am, matthiasja... at gmx.net wrote:
>
>
>
> > Hi all,
>
> > I have a application where I use different threads. actually all is
> > working - BUT I just discovered that the [b]CPU is always 100 % [/
> > b]used.
>
> > on the 32-bit machine athlon XP, as well as on the amd 64-bit AMD
> > Athlon(TM) 64 X2 Dual-Core.
>
> > I have to admit I'm not used to threads. I actually use a thirdparty
> > scheduler [url]http://www.webwareforpython.org/TaskKit/Docs/Source/
> > Docs/TaskKit.Scheduler.html[/url]
> > but I checked and a very simple exampe with threading gives me also
> > all the time 100% CPU.
>
> > [code]
>
> > import threading, time
>
> > class TestThread ( threading.Thread ):
> > def run ( self ):
> >     print 'TEST'
>
> > t = TestThread()
> > t.start()
>
> > while (True):
> >     pass
>
> > [/code]
>
> > Does anyone know how to run this without consuming all CPU.
>
> > regards,
>
> > MJ
>
> You need your program to sleep a while to allow a switch to other
> tasks. Like so:
>
> ###
> import threading, time
>
> class TestThread(threading.Thread):
>     def run(self):
>         print 'TEST'
>
> t = TestThread()
> t.start()
>
> while (True):
>     time.sleep(0.01)
>     pass
> ###
>
> Regards



Thanks a lot both of you.

MJ