Andrew Gierth wrote:
"Robert" == Robert Haas <robertmh...@gmail.com> writes:
Robert> How about (3) getrlimit(RLIMIT_STACK) lies through its teeth,
Robert> by ignoring the existence of another and lower limit imposed
Robert> elsewhere?
Robert> A little Googling seems to reveal that FreeBSD has a
Robert> parameter called MAXSSIZ (and possibly a variant for 64-bit
Robert> builds). I kind find a lot of people talking about needing
Robert> to raise it (for MySQL, among other things), but I haven't
Robert> been able to determine for certain what the default is.
Robert> Perhaps it is set to a really low value on the OP's system?
The default is 64MB on i386, 512MB on amd64; that's where the
getrlimit value comes from unless it's been explicitly reduced
somewhere. The kernel MAXSSIZ sets the value of the hard limit for
RLIMIT_STACK for proc0, and everything else inherits that. All
setrlimit calls for RLIMIT_STACK are explicitly clamped to MAXSSIZ, so
there's no way to set that value higher than the kernel limit, and no
way for getrlimit to report a value higher than the real limit.
I vaguely recall issues in the past with linking of postgresql (or PLs
that require it) against libc_r causing some rather small stack limits
being imposed under some circumstances but I don't recall the details
any more...
Stefan
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