PPC needs lots more stack space in rawhide??
tgl at redhat.com
Wed Jan 9 16:11:04 UTC 2008
Dennis Gilmore <dennis at ausil.us> writes:
> On Wednesday 09 January 2008, David Woodhouse wrote:
>> On Tue, 2008-01-08 at 16:28 -0500, Tom Lane wrote:
>>> ... Has gcc started making PPC stack frames a lot
>>> larger than before? Maybe glibc has gotten more stack-hungry? I'd
>>> guess on the problem being in gettext() or related code, if it is a
>>> glibc change, but I haven't tracked it down exactly.
>> For a while we used 64KiB pages on ppc64, because IBM insisted on it in
>> RHEL5 and I didn't notice we'd done the same stupid thing in Fedora. I
>> believe it was like that in FC6 but I fixed it again for F7.
>> Is it possible that the kernel on the build machines is now similarly
> The build system when refreshed in December got updates to RHEL5 so are all
> running RHEL5 kernels. they do have one extra patch for a bug in tux.
Interesting, but would that affect the rate at which userland code
consumes stack space?
Since posting, I've verified that it still fails at STACK_MIN_SIZE = 48K,
which is 300% of the setting that had worked up through mid-December.
So *something* has gone pretty seriously wacko, but it's hard to tell
what. I guess I shall have to request buildroot access and start poking
at it with a debugger ...
regards, tom lane
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