Re: 4k stacks in 2.6

[Arjan van de Ven]

On Wed, May 26, 2004 at 02:50:14PM +0200, Jörn Engel wrote:
> 
> Experience indicates that for whatever reason, big stack consumers for
> all three contexts never hit at the same time.  Big stack consumers
> for one context happen too often, though.  "Too often" may be quite
> rare, but considering the result of a stack overflow, even "quite
> rare" is too much.  "Never" is the only acceptable target.

Actually it's not mever in 2.4. It does get here there by our customers once
in a while. Esp with several NICs hitting an irq on the same CPU (eg the irq
context goes over it's 2Kb limit)

> done, a stack overflow will merely cause a kernel panic.  Until then,
> I am just as conservative as Andreas.

actually the 4k stacks approach gives MORE breathing room for the problem
cases that are getting hit by our customers...

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