Comment 1 for bug 1729380

Multiple worker processes would be the way to go, similar to what was done for the reconstructor [1] and is planned to be added to the replicator [2].

1. https://github.com/openstack/swift/commit/701a172afac37229b85ea762f20428f6f422d29b
2. https://etherpad.openstack.org/p/swift-replicator-handoff-only-workers