It used to be that we would get 'out of memory' errors from slon
processes after the grew gradually for a wekk.  Now, we have them
dying when trying to process a SYNC event.

We do have some really large records.  I think the biggest is 3.7
million bytes and one table in sl_log_1 has an average length of
127,000.

The machine has 16 GB of RAM.  We are running 32-bit slon processes on
64-bit x86_64 kernel so there should be say 2 GB of process memory.  I
suspect that there is a memory leak in the slon daemon.  Even the
largest 100 records should fit in memory.

 - Ian