Messages in this thread | | | Date | Sun, 20 Apr 2008 09:05:40 -0500 | From | Eric Sandeen <> | Subject | Re: x86: 4kstacks default |
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Adrian Bunk wrote:
> But the more users will get 4k stacks the more testing we have, and the > better both existing and new bugs get shaken out. > > And if there were only 4k stacks in the vanilla kernel, and therefore > all people on i386 testing -rc kernels would get it, that would give a > better chance of finding stack regressions before they get into a > stable kernel.
Heck, maybe you should make it 2k by default in all -rc kernels; that way when people run -final with the 4k it'll be 100% bulletproof, right? 'cause all those piggy drivers that blow a 2k stack will finally have to get fixed? Or leave it at 2k and find a way to share pages for stacks, think how much memory you could save and how many java threads you could run!
4K just happens to be the page size; other than that it's really just some random/magic number picked, and now dictated that if you (and everyting around you) doesn't fit, you're broken.
That bugs me.
-Eric
(yes, I know there are advantages to only allocating a single page for a new thread, but from an "all callchains after that must fit in that space" perspective, it's just a randomly picked number)
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