Separate device log recording from the rest of the app. This should cause less strain on the DB server especially since the full event log is rarely needed; you could just use your favorite log collector to watch stderr. DB calls are still mixed, but may be refactored out later.

lib/units/processor/index.js

@@ -139,7 +139,6 @@ module.exports = function(options) {
       appDealer.send([channel, data])
     })
     .on(wire.DeviceLogMessage, function(channel, message, data) {
-      dbapi.saveDeviceLog(message.serial, message)
       appDealer.send([channel, data])
     })
     .on(wire.DeviceIdentityMessage, function(channel, message, data) {