Limiting the number of subversion polls executed in parallel, is a requirement
we encountered on windows platform. If too many polls are executed in parallel,
the Windows Desktop Heap is not sufficient to perform those, so that an
exception is caused (out of heap in windows not in java) - after that nothing
that tries to start more than a small process dies because of insufficient
memory to access during process creation. So maybe - as used with the build
executors - a
limitation could be used.