RE: msleep() an load average
From: Eibach, Dirk
Date: Wed May 04 2011 - 09:55:20 EST
> > while(1) msleep_interruptible(1000);
> >
> > I appreciate their admiration, but still there are doubts
> in my mind:
> > Is this code really any better?
>
> Try to send it a signal, it will eat 100% of CPU without sleeping.
As I am a great kernel hacker, all signals are blocked ;)
> > Is the loadavg metric broken beyond repair?
>
> No, this is expected behaviour. Uninterruptible sleeps count
> as I/O load.
Ah, now we come to the point. Is there any practical reason behind this
or was it just an igenious invention to annoy those smug userspace
developers? I don't see any real world I/O load here.
> regards,
> --
> js
Cheers
Dirk
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