Re: No 100 HZ timer !

Andi Kleen
2001-04-10T05:51:50Z

On Mon, Apr 09, 2001 at 02:19:28PM -0400, Mark Salisbury wrote:
> this is one of linux biggest weaknesses. the fixed interval timer is a
> throwback. it should be replaced with a variable interval timer with interrupts
> on demand for any system with a cpu sane/modern enough to have an on-chip
> interrupting decrementer. (i.e just about any modern chip)

Just how would you do kernel/user CPU time accounting then ? It's currently done
on every timer tick, and doing it less often would make it useless.

-Andi