Re: signal 11 on AIX: 7.4.2

On Sat, Sep 18, 2004 at 06:06:05AM -0400, Jan Wieck wrote:
> On 9/17/2004 7:32 PM, Tom Lane wrote:
> >over time.  I'm wondering about DNS lookup results in particular.
> 
> Except for one "localhost", one "/tmp/.s.PGSQL..." and the "543x" lookup 
> during the postmaster start, all lookups are IP addresses with 
> AI_NUMERICHOST set. And we have checked with tcpdump that the box really 
> does not issue DNS lookups.

Just for the sake of posterity, it appears that this is actually a
libc problem on AIX.  In particular, there's a patched libc fileset
which was released to solve a problem where getaddrinfo() returns an
error on valid input.  IBM's AIX support was unwilling to give us
libraries with debug symbols built in, but they did point me at a new
fileset for libc.  We've been running a test load which fairly
consistently produced sig 11s before, and haven't seen one since.  So
we don't have a perfect explanation, but it looks like this is the
cause.

A

-- 
Andrew Sullivan  | ajs@crankycanuck.ca
The plural of anecdote is not data.    --Roger Brinner