Messages in this thread | | | Date | Tue, 1 Jan 2002 03:05:07 +0000 | From | Pavel Machek <> | Subject | Re: [PATCH (updated)] timer: Run calc_load halfway through each round_jiffies second |
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Hi!
> Whenever jiffies is started at a multiple of 5*HZ or > wraps, calc_load is run exactly on the second which is > when tasks using round_jiffies will be scheduled to run. > This has a bad effect on the load average, making it > tend towards 1.00 if a task happens to run every time > the load is being calculated. > > This changes calc_load so that it updates load half a > second after any tasks scheduled using round_jiffies.
Hmm, otoh this makes calc_load more expensive, power-wise, because it needs to wake the cpu once more?
Timetraveling, sorry. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - 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/
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