[Gllug] Random freezes

[Richard Jones]

On Mon, Jan 31, 2005 at 03:25:41PM +0000, Christian Smith wrote:
> It's based on a "generalised" page table model, with 3 levels of pages.
> That works fine on machines with <=3 levels of page tables, but x86-64 has
> 4 levels in 64 bit mode, I believe. It works alright in TLB based MMUs,
> such as MIPS and SPARC V9, but doesn't really fit for inverted page table
> based architectures.

The latest 2.6 kernels appear to have the 4-level page table model
merged in.

> The fact that BSDs are often cited as better under high load is a function
> of it's better VM architecture. Linux would do well to adopt a similar
> seperation of VM policy and mechanism. Alas, it will not happen.

Agree with you about performance.  Even as a desktop machine, FreeBSD
is noticably better under load than Linux.

Rich.

-- 
Richard Jones, CTO Merjis Ltd.
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