Re: buildfarm failures on smew and anole

On 10/11/2013 03:33 PM, Robert Haas wrote:
> The build is continuing to fail on smew and anole.  The reason it's
> failing is because those machines are choosing max_connections = 10,
> which is not enough to run the regression tests.  I think this is
> probably because of System V semaphore exhaustion.  The machines are
> not choosing a small value for shared_buffers - they're still picking
> 128MB - so the problem is not the operating system's shared memory
> limit.  But it might be that the operating system is short on some
> other resource that prevents starting up with a more normal value for
> max_connections.  My best guess is System V semaphores; I think that
> one of the failed runs caused by the dynamic shared memory patch
> probably left a bunch of semaphores allocated, so the build will keep
> failing until those are manually cleaned up.
>
> Can the owners of these buildfarm machines please check whether there
> are extra semaphores allocated and if so free them?  Or at least
> reboot, to see if that unbreaks the build?
>

It is possible to set the buildfarm config
    build_env=> {MAX_CONNECTIONS => 10 },

and the tests will run with that constraint.

Not sure if this would help.

cheers

andrew