Re: finding out the value of HZ from userspace

From: Jamie Lokier
Date: Thu Apr 01 2004 - 10:58:13 EST


Albert Cahalan wrote:
> If you rely on sysconf(_SC_CLK_TCK) to work, then
> your software will support:
>
> * all systems with a 2.6.xx kernel
> * all systems with a 2.4.xx kernel and recent glibc
> * all i386 systems running with the default HZ
>
> That's quite a bit I suppose. Maybe you have no
> interest in supporting a 1200 HZ Alpha with an old
> kernel or glibc. Maybe you don't care about somebody
> running a 2.2.xx kernel with modified HZ.

I'm still unclear. Does sysconf(_SC_CLK_TCK), when it is reliable,
return HZ or USER_HZ?

-- Jamie
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