Dedicated CPU core for Python?
gagsl-py2 at yahoo.com.ar
Sat Apr 28 09:14:26 CEST 2007
Joshua J. Kugler ha escrito:
> On Thursday 26 April 2007 14:07, Gabriel Genellina wrote:
> > En Thu, 26 Apr 2007 15:54:38 -0300, Joshua J. Kugler
> > <joshua at eeinternet.com> escribió:
> >> CPython only
> >> uses one
> >> CPU core right now because it's threads are all internal, and do not
> >> spawn system threads (IIRC).
> > Python threads are OS threads:
> > http://docs.python.org/lib/module-thread.html
> > "[The thread module] is supported on Windows, Linux, SGI IRIX, Solaris
> > 2.x, as well as on systems that have a POSIX thread (a.k.a. ``pthread'')
> > implementation."
> Yes, that may be, but they are not true system threads, or at least do not
> appear to be. Threads on linux each show up as a separate process. I can
> have several threads in my Python program, but no additional processes show
> up in ps -A. I don't see how Python threads can be system threads with the
> GIL. But, I've been wrong before, and threads are something I have very
> light knowledge of.
Try with ps -L
gag at 4[~]$ ps -L -C python
PID LWP TTY TIME CMD
3952 3952 pts/1 00:00:03 python
3952 3956 pts/1 00:00:00 python
3952 3957 pts/1 00:00:00 python
3952 3958 pts/1 00:00:00 python
3952 3959 pts/1 00:00:00 python
3952 3960 pts/1 00:00:00 python
3952 3961 pts/1 00:00:00 python
3952 3962 pts/1 00:00:00 python
Or ps --help depending on your system.
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