Re: [PATCH] 2.6.0-test4 -- add context switch counters

[William Lee Irwin III <wli@holomorphy.com>]

On Wed, Aug 27, 2003 at 11:50:30AM +1000, Peter Chubb wrote:
> I'm actually intested in getting most of the rusage fields filled in
> properly, at least the ones that make sense for Linux.

Me too.


On Wed, Aug 27, 2003 at 11:50:30AM +1000, Peter Chubb wrote:
> Things to do are:
>        -- Track maxrss and report it.

That's easy.


On Wed, Aug 27, 2003 at 11:50:30AM +1000, Peter Chubb wrote:
>        -- Track and integrate rss.
>        -- Fix the page fault accounting (currently some minor faults
>           are counted as major faults)

Hmm, I don't remember this offhand. I thought the bigger issue was with
threads.


On Wed, Aug 27, 2003 at 11:50:30AM +1000, Peter Chubb wrote:
>        -- add signal accounting

Sounds easy.


On Wed, Aug 27, 2003 at 11:50:30AM +1000, Peter Chubb wrote:
> Block I/O isn't that important -- it almost all goes through the page
> cache anyway, and it's a bit difficult to assign a particular I/O to a
> particular process.  Likewise, message I.O isn't that important AFAIK.

Well, ignoring the background io issue and just ticking per-task counters
in the read/write syscalls sounds good enough to me.


On Wed, Aug 27, 2003 at 11:50:30AM +1000, Peter Chubb wrote:
> The stack, data and unshared data sizes aren't currently
> accounted for separately at all, so it'd be a bit difficult to track
> the integral of those numbers.

I've got some stuff to keep the derivatives of these going on the back
burner, and integrating isn't hard.


-- wli