Messages in this thread |  | | Date | Tue, 6 Nov 2001 17:17:56 +0200 | From | Matti Aarnio <> | Subject | Re: HZ value |
| |
On Tue, Nov 06, 2001 at 04:15:25PM +0200, Yoav Etsion wrote: > Hi, > > Does anyone know why the HZ (asm/param.h) value on the Alpha (1000) is > different than on any architecture (100)?
It is 1024.
Why should it be anything in particular ?
It being 1024 gives nice properties in certain obscure internal time functions. 100 or 1000 can not use same tricks as 1024 when a division is needed...
The 100 is usual UNIX tradition, although other values were present in earlier times. Alpha on the other hand has always been a rather fast beast, and there a faster timer tick is somewhat justified.
That 100 is tough for a 386/20MHz, but 1024 is no problem for a Pentium-IV/1.5GHz.
> Thanks, > Yoav Etsion
/Matti Aarnio - 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/
|  |