On Saturday 09 July 2005 01:08, Linus Torvalds wrote: > > On Fri, 8 Jul 2005, Andrew Morton wrote: > > > > > > The previous value here i386 is 1000 --- so why is the default 250. > > > > Because 1000 is too high. > > Yes. I chose 1000 originally partly as a way to make sure that people that > assumed HZ was 100 would get a swift kick in the pants. That meant making > a _big_ change, not a small subtle one. For example, people tend to react > if "uptime" suddenly says the machine has been up for a hundred days (even > if it's really only been up for ten), but if it is off by just a factor of > two, it might be overlooked. > > So 1kHz was a bit of an overkill, but it worked well enough that we never > really got around to changing it.
There are lots of HZ/100 in the kernel. With either 100 or 1000 it divides exactly, but with 250 it's wrong by 20%. -- vda - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
