Subject: Re: [RFC] fib_trie: memory waste solutions

From: Andi Kleen <[email-masked]>
Date: Mon, 07 Apr 2008 09:58:04 +0200

Robert Olsson <[email-masked]> writes:
>
>  Do we get slower with vmalloc due to TLB-lookups etc? Guess this
>  should be investigated.

In some cases it might even go faster because a lot of x86 CPUs
have far more 4K TLBs than 2M TLBs. vmalloc is just quite expensive
in setup/free time, but that shouldn't be a big issue here.

The memory savings are impressive.

-Andi