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Re: [Discuss-gnuradio] scheduler internals

From: Eric Blossom
Subject: Re: [Discuss-gnuradio] scheduler internals
Date: Mon, 6 Apr 2009 08:24:12 -0700
User-agent: Mutt/1.5.18 (2008-05-17)

On Mon, Apr 06, 2009 at 04:14:21PM +0200, Dimitris Symeonidis wrote:
> I have a flowgraph that is saturating my CPU, causing underruns.
> I would like to find out the block (i.e. thread) that is loading the
> cpu most heavily, in order to see if there's anything I can do to make
> it lighter (and avoid having to try it on a more powerful system).
> I have run "top" and pressed "H" to show threads, and see a lot of
> "python" threads, most of them under 10% cpu load, and only one of
> them at 49% cpu load, so that one is likely the culprit.
> Is there some way to extract this information from the GnuRadio scheduler?
> Thanx
> Dimitris Symeonidis

Try using oprofile.

We'll eventually add per-block performance statistics, but that's
pretty low on the priority list at this point.


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