Re: Doubt about scheduler

[Steven Rostedt]

On Sun, 5 Mar 2006, Jon Masters wrote:

> On 3/5/06, Raúl Baena <raul_baena@xxxxxx> wrote:
>
> > I thought that to make the module about the new O(k) scheduler would be
> > a good idea. I think that it´s not enough for me schedstats, because I
> > want to make a visual scheduler, I mean, using GTK+ , a module and
> > something else to make a visual scheduler monitor, how the tasks move
> > between "active" and "expired", where the task are in prio_array with
> > the bitmap fields...this module isn´t usefull, only in a didactic way.
>
> If you're seriously interested in this then cool. Let me know how you get on.
>
> I looked at hacking something into gtop etc. previously to use
> /proc/kcore and pull out task information - I'd certainly like to see
> a visual process monitor that could pull all of this stuff out and
> display it for educational interest (page tables, vmas, other
> resources). But then, it's probably been done - I didn't look to see
> what else is out there.
>

Raul, Also take a look at relayfs. It's a fast way to record data in the
kernel and pass it back to a userland process.  You'll have to patch the
kernel as it is said that the data needed is private to sched.c

Look into Documentation/filesystems/relayfs.txt

relayfs entered the kernel in 2.6.14.

-- Steve

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