On Tue, Feb 19, 2002 at 12:55:22PM -0800, you [george anzinger] wrote:
> >
> > > Does this problem still exist on 64-bit machines?
> >
> > Absolutely. But not as often ;-)
>
> Actually you will have a VERY hard time getting it to roll over. Issues
> of your life time, not to mention the hardware's life time. 64 bits
> makes a VERY large number and you are counting in 427 day increments.
> Remember we have been counting seconds since 1970 in 32 bits and
> rollover is still, most likely, beyond the capability of any machine
> running today to get to. Now consider counting in 427 day increments
> instead of seconds.
48.5 day increments, not 497. On alpha and ia64 it's 1024 jiffies per
second.
Well, ok. Majority of the 64-bit archs seem to in fact use HZ=100:
asm-alpha/param.h:# define HZ 1024
asm-ia64/param.h:# define HZ 1024
asm-mips64/param.h:#define HZ 100
asm-ppc64/param.h:#define HZ 100
asm-s390x/param.h:#define HZ 100
asm-sparc64/param.h:#define HZ 100
asm-x86_64/param.h:#define HZ 100
-- v --
v@iki.fi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sat Feb 23 2002 - 21:00:24 EST