Re: [RFC] memory page_alloc zonelist caching speedup

Paul Jackson
2006-10-10T06:45:30Z

pj wrote:
> 2) Let's say you just got a sample petahertz processor from your
> favorite CPU vendor, with 64 cores and 4 TBytes of 10 picosecond
> RAM, all in one package. You can built, boot and test your entire
> distro in 4.2 seconds.

This silly example motivates changing my one second (1 * HZ) constant
timeout on the zonelist cache to a variable, computed at boottime as a
simple minded function of bogomips or clock speed or some such.

At the (slow) rate of CPU frequency increases the last few years, we've
got a while before we need to worry about this change.