> > Well, I found a smoking gun: ...
> > What seems to have happened is that 2501 curled up and died, leaving
> > one or more buffer spinlocks locked. ...
> > There is something pretty fishy about this. You aren't by any chance
> > running the postmaster under a ulimit setting that might cut off
> > individual backends after a certain amount of CPU time, are you?
> > What signal does a ulimit violation deliver on your machine, anyway?
>
> It's worth noting here that modern Unixes run around killing user-level
> processes more or less at random when free swap space (and sometimes
> just RAM) runs low. AIX was the first such, but would send SIGDANGER
> to processes first to try to reclaim some RAM; critical daemons were
> expected to explicitly ignore SIGDANGER. Other Unixes picked up the
> idea without picking up the SIGDANGER behavior.
That's not the case for sure. There are 512Mb on the machine, and when I had
this problem it was compltely unloaded (>300Mb in caches).
--
Sincerely Yours,
Denis Perchine
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