Re: system call for process information?

[Guennadi Liakhovetski]

On Mon, 12 Mar 2001, Alexander Viro wrote:

> On Mon, 12 Mar 2001, Guennadi Liakhovetski wrote:
> 
> > I need to collect some info on processes. One way is to read /proc
> > tree. But isn't there a system call (ioctl) for this? And what are those
> 
> Occam's Razor.  Why invent new syscall when read() works?

CPU utilisation. Each new application has to calculate it (ps, top, qps,
kps, various sysmons, procmons, etc.). Wouldn't it be worth it having a
syscall for that? Wouldn't it be more optimal?

> > task[], task_struct, etc. about?
> 
> What branch? (2.0, 2.2, 2.4?)

Well, what I mean was - don't these structures contain the information I
am looking for? Let's start from the end - 2.4, then what's the difference
with 2.2 and finally 2.0?

Thanks
Guennadi
___

Dr. Guennadi V. Liakhovetski
Department of Applied Mathematics
University of Sheffield, U.K.
email: [e-mail]