SIGUSR1 killing running rails requests

[dsmalley]

Since tweaking our setup to get Rails running using dispatch.lsapi we are getting lots of SIGUSR1 errors messages produced in our app.

They appear to be produced whenever a request results in a large dataset being returned.

Can anyone point me in the direction of the configuration settings that can stop these errors occuring? My first thoughts were to raise the memory limits on our processes but this doesn't seem to have stopped them.

Is there any other information I can supply to help diagnose this problem?