Re: [PATCH][RFC] 4K stacks default, not a debug thing any more...?

On 07/19/2007 02:41 AM, Matt Mackall wrote:

On Thu, Jul 19, 2007 at 02:15:39AM +0200, Andrea Arcangeli wrote:

Using kmalloc(8k) instead of alloc_page() doesn't sound a too big deal
and that will solve the problem.


How do you figure?

If you're saying that soft pages helps our 8k stack allocations, it
doesn't. The memory overhead of soft pages will be higher (5-15%,
mostly due to file tails in pagecache) than the level at which 8k
stacks currently run into trouble (1-2% free?).

Not helpful.


With tail-packing it is.

Rene.

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