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[Xen-devel] [PATCH] xenstore: set READ_THREAD_STACKSIZE to a sane value



Roger Pau Monne writes ("[PATCH] xenstore: set READ_THREAD_STACKSIZE to a sane 
value"):
> On FreeBSD PTHREAD_STACK_MIN is 2048 by default, which is obviously
> too low. Set the default back to the previous value (16 * 1024), or if
> that's too low set it to PTHREAD_STACK_MIN.

The "previous value" is 16K, which was used before
35e874b1d5d56dd2098313364b879c637fa56844.  In that commit, Ian C
wrote:

    Consindered setting a lower bound but the stack requirements of
    the watcher thread are pretty minimal (tens of bytes from the
    looks of it) and unlikely to blow PTHREAD_STACK_MIN on any useful
    platform.

I've just re-reviewed the read_thread code and I concur with Ian
Campbell's assessment.

So I don't understand why PTHREAD_STACK_MIN isn't sufficient.  Is
(nearly) that whole amount used by the C runtime system somehow ?

Thanks,
Ian.

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