Re: [PATCH] mm: page_alloc: High-order per-cpu page allocator v3

[Christoph Lameter]

On Mon, 28 Nov 2016, Mel Gorman wrote:

> Yes, that's a problem for SLUB with or without this patch. It's always
> been the case that SLUB relying on high-order pages for performance is
> problematic.

This is a general issue in the kernel. Performance often requires larger
contiguous ranges of memory.


> > that only insiders know how to tune and an overall fragile solution.
> While I agree with all of this, it's also a problem independent of this
> patch.

It is related. The fundamental issue with fragmentation remain and IMHO we
really need to tackle this.