Re: [lart] /bin/ps output

[Andrew Morton]

Anton Blanchard wrote:
> 
> > Bah! I'm at a competitive disadvantage because I've got a lesser
> > BITS_PER_LONG. No matter, NR_CPUS > BITS_PER_LONG shall be conquered
> > and the explosion of kernel threads will be quite visible (though
> > unfortunately probably post-freeze).
> 
> Speaking of which, the recent CONFIG_NR_CPUS addition shows just how
> bloated all our [NR_CPU] structures are. We need to get serious about
> using the per cpu data stuff. Going from 32 to 64 was over 500kB on my
> ppc64 build.
> 

Half of which is in timer.c.

mnm:/usr/src/25> size kernel/timer.o
   text    data     bss     dec     hex filename
   4960     100  167648  172708   2a2a4 kernel/timer.o

That's with NR_CPUS=32.  Show me yours.

Using the percpu stuff will not significantly reduce this.  Some
new data structure might be needed.