> Right, but if the pagetable pointing to a different 4GB subsets of memory.
> The performance of the system can be disastrous, not?
No. It may be measurable, but I've seen posts from very competent people
indicating that penalties of 2-5% are usual. Swapping to disk is going to
hurt a lot more than that, so if a system has lots of processes more
memory is usually better.
Maybe some of the benchmark gurus can point you to numbers on this.
-- bill davidsen <davidsen@tmr.com> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.- 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/