G'day Guys, Just a quick question.

"However, I am wondering whether the same tuning can be applied to other parts of the kernel? e.g, can't we map mbuf clusters to 4MB MMU pages instead of 4K pages to improve the performance under heavy network load?" <-- That might be the question?

I am no expert in this area, however I'll try to reason: - Data gets written by DMA to buffers, so TLB is no issue here - The kernel usually only inspects the packet headers, and they are so small that there is only one pagetable lookup necessary - Copying data to userland anyways incurs pagetable lookups But I agree, having all kernel (including data) as 4MB tables probably=20= won't hurt performance. What might be much more efficient could be the=20= new GLOBAL page attribute, which p...