Re: [RFC] 4-level page table directories.

Robin Holt
2005-11-03T16:36:52Z

On Wed, Nov 02, 2005 at 05:53:10PM -0800, Chen, Kenneth W wrote:
> I just did a quick measurement with I/O submission path. get_user_pages
> is my biggest concern that extra level means more code and cache foot
> print for each I/O submission. It cost about 1.5% more in I/O path
> length on a micro-benchmark (from block layer and Up). This could be
> all buried as noise in a larger scheme for industry database benchmark.

Can you point me at the benchmark?

Thanks,
Robin