> > 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. On the contrary doing it less often but at the right time massively improves its accuracy. You do it on reschedule. An rdtsc instruction is cheap and all of a sudden you have nearly cycle accurate accounting Alan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- Re: No 100 HZ timer ! Zdenek Kabelac
- Re: No 100 HZ timer ! Mark Salisbury
- Re: No 100 HZ timer ! yodaiken
- Re: No 100 HZ timer ! Oliver Xymoron
- Re: No 100 HZ timer ! Mark Salisbury
- Re: No 100 HZ timer ! Andi Kleen
- Re: No 100 HZ timer ! Martin Mares
- Re: No 100 HZ timer ! Albert D. Cahalan
- Re: No 100 HZ timer ! Mark Salisbury
- Re: No 100 HZ timer ! Karim Yaghmour
- Re: No 100 HZ timer ! Alan Cox
- Re: No 100 HZ timer ! Andi Kleen
- Re: No 100 HZ timer ! Alan Cox
- Re: No 100 HZ timer ! Andi Kleen
- Re: No 100 HZ timer ! Alan Cox
- Re: No 100 HZ timer ! Andi Kleen
- Re: No 100 HZ timer ! Stephen D. Williams
- Re: No 100 HZ timer ! Andi Kleen
- Re: No 100 HZ timer ! Mark Salisbury
- Re: No 100 HZ timer ! Mark Salisbury
- Re: No 100 HZ timer ! Andi Kleen