Messages in this thread | | | Date | Wed, 10 Nov 2004 18:07:25 +1100 | From | Nick Piggin <> | Subject | Re: Workaround for wrapping loadaverage |
| |
Herbert Poetzl wrote: > On Tue, Nov 09, 2004 at 01:43:35AM +0100, Patrick Mau wrote: >
>>We re-calculate the load every 5 seconds. I think it would be OK to >>use more bits/registers, it's not that frequently called. > > > hmm ... > > do_timer() -> update_times() -> calc_load() > > so not exactly every 5 seconds ... >
calc_load() -> messing with LOAD_FREQ -> once every 5 seconds, no?
I think doing 32/32 bit calculations would be fine.
> but I agree that a higher resolution would be a good > idea ... also doing the calculation when the number > of running/uninterruptible processes has changed would > be a good idea ... >
Apart from the problem Con pointed out, you'd need a fancier algorithm to calculate load because your interval isn't going to be fixed, so you need to factor that in when calculating the area under the 'curve' (loadavg).
I think the good 'ol 5 seconds should be alright. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |