Messages in this thread | | | Date | Wed, 17 Mar 2004 11:15:46 +1100 | From | Peter Williams <> | Subject | Re: finding out the value of HZ from userspace |
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Andi Kleen wrote: >>These programs could (and should) use sysconfig(_SC_CLK_TCK) to find out >>how many ticks there are in a second so this does not constitute a good >>reason for USER_HZ not being equal to HZ. > > > These programs are usually shell scripts that initialise some sysctls.
Which ones? Top and ps don't appear to be scripts on my system (Red Hat 9.0).
> It's not easy to call sysconf from there.
A small utility program would suffice.
> Also we tend to avoid breaking > things that would fail silently instead of failing with an obvious error > message. This would be such a case. Silent breakage is an extremly bad > thing.
This is the responsibility of the authors of the programs in question not the kernel.
Peter -- Dr Peter Williams, Chief Scientist peterw@aurema.com Aurema Pty Limited Tel:+61 2 9698 2322 PO Box 305, Strawberry Hills NSW 2012, Australia Fax:+61 2 9699 9174 79 Myrtle Street, Chippendale NSW 2008, Australia http://www.aurema.com
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