Messages in this thread | | | Date | Sun, 20 Apr 2008 15:38:57 +0200 | From | Willy Tarreau <> | Subject | Re: x86: 4kstacks default |
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On Sun, Apr 20, 2008 at 09:27:32AM -0400, Mark Lord wrote: > Willy Tarreau wrote: > > > >What would really help would be to have 8k stacks with the lower page > >causing a fault and print a stack trace upon first access. That way, > >the safe setting would still report us useful information without > >putting users into trouble. > .. > > That's the best suggestion from this thread, by far! > Can you produce a patch for 2.6.26 for this?
Unfortunately, I can't. I wouldn't know where to start from.
> Or perhaps someone else here, with the right code familiarity, could?
I hope so.
> Some sort of CONFIG option would likely be wanted to > either enable/disable this feature, of course.
If we want to migrate to 4k sooner or later, this behaviour would not need a config option, maybe just a /proc or /sys tunable to disable the warning. Config would be either (4k + risk of crash) or (8k + warning).
The *real* issue is to decide whether we need/want 4k or not, because I think we're still discussing the subject for no reason, as usual...
Willy
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