Messages in this thread | | | Date | Wed, 26 Jun 2002 16:00:29 +0200 | From | Nicolas Bougues <> | Subject | Re: Problems with wait queues |
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On Wed, Jun 26, 2002 at 12:52:41PM +0200, Andries Brouwer wrote: > On Wed, Jun 26, 2002 at 12:32:43PM +0200, Nicolas Bougues wrote: > > > Does anybody have any idea on what I may have done wrong, and why > > would loadavg increase when vmstat show no activity ? > > loadavg does not report what you think it reports >
As far as I understand, loadavg reports the average number of processes in the TASK_RUNNING state.
What happens in my driver, I believe, is that : - on timer interrupt, I do some stuff, and wake_up the waiting process - then the loadavg is computed (seeing my waiting task as TASK_RUNNING) - then the scheduler runs the task - then the task goes immediatly back to sleep
>From this point of view, then my problem is just "cosmetic". Isn't there a way to do things in a different order, so that I could still get a meaningful(*) loadavg ?
(*): by meaningful, I mean representing the number of busy processes at a random point in time. -- Nicolas Bougues
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