Messages in this thread | | | Subject | Re: Measured overhead of timer interrupts | From | Andi Kleen <> | Date | 22 Jul 1999 16:47:14 +0200 |
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kuznet@ms2.inr.ac.ru writes:
> Hello! > > > The networking stuff in particular needs fixing, otherwise > > the timer values displayed eg by netstat look 'interesting'. > > Fix netstat, please, rather than kernel.
It is a kernel bug, HZ is not exported. Actually two, because none of the /proc should have used it as units, but that cannot be fixed anymore. It is easy to add a read-only sysctl for HZ though and make netstat use this, but this won't fix the trillions of other /proc parsers.
> For debugging I want to see variables EXACTLY as they > look to kernel. The fact that timer value = 1 jiffie > is critical information.
This can be archived by using a unit that is <= than any jiffie in use, then you never lose lower bits, just a few (uninteresting) upper ones. ms is a good candidate.
-Andi
-- This is like TV. I don't like TV.
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