In case anybody is interested, I got the logging I wanted by replicating the data to another (memory) channel and connecting a logger sink to that channel.
The problem turned out to be grep, running inside a shell script in the exec source, which was buffering the events. On Mon, 2012-06-25 at 11:25 +0000, Stern, Mark wrote: > I seem to be losing events somewhere between my endpoints. Is there a > way to increase the logging level to figure out where (and maybe even > why)?