Re: [Discuss-gnuradio] Fedora 10 and svn head

['Eric Blossom']

On Thu, Jan 01, 2009 at 09:42:47PM -0500, Marcus D. Leech wrote:
> 'Eric Blossom' wrote:
> > On Thu, Jan 01, 2009 at 01:23:55PM -0500, Marcus D. Leech wrote:
> >   
> >> I'm running on a quad-core Q6600 system, which I have overclocked to
> >> about 2.95Ghz, from 2.4Ghz.  It's just
> >>   barely able to keep up with two (complex, 8-bit) channels at 6.4Msps
> >> for my radio astronomy stuff.  I can't get
> >>   it to overclock any higher, until I get a cooler (currently using the
> >> stock fan).
> >>     
> >
> > When you oprofile it, what's the big CPU user?
> >
> >   
> OK, someone throw me a frickin bone here.    I can't, for love nor
> money, find a way to get a vmlinux-uncompressed-with-symbols
>   image for oprofile to use with my running F10 kernel.  They ship
> kernel images compressed, and without symbols, and the older
>   information on this (ca FC6) doesn't appear to work anymore--there's
> no "core-debuginfo" and "kernel-debuginfo" packages to
>   install.
> 
> So, to a first approximation, oprofile is next-to-useless for me. 
> (Although it does helpfully tell me that the kernel and libgnuradio-core
>   are the top two CPU users, but I'd really like more detail than that
> :-) ).


The kernel symbols are nice, but not essential.

$ sudo opcontrol --start
$ <run your app>
$ sudo opcontrol --dump
$ sudo opcontrol --stop

$ opreport -l -t 2 

Then when you want to do it again,

$ sudo opcontrol --reset
$ sudo opcontrol --start
...

Eric