Re: BUG #7670: BUG #7545: Unresponsive server with error log reporting: "poll() failed: Invalid argument"

On 18 November 2012 17:12, Andres Freund <andres@2ndquadrant.com> wrote:
> Ok, this is already helpful. Do you have anything the log that shows
> what process pid 95528 is? Could you grep for it?

I haven't looked at this in detail, but are you sure that this isn't
the bug that was fixed by commit
e81e8f9342b037246b284bad15e42e21b1929301 ? The "invalid argument"
poll() error is too generic to be sure what is really at fault, but
this doesn't need to be a FATAL error, it seems.

Is this a 32-bit platform? It's probably just that there is a large
number of sockets, which Google seems to think can cause this error
with poll(), so this seems like a slight variant of the problem
reported by Sean Chittenden (kernel resource exhaustion causes pipe
creation to fail, with unnecessarily bad consequences for Postgres).

--
Peter Geoghegan       http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training and Services