Clustering : Performance issues in BGP scale test

After connecting BGP to a feed, it timeouts after about 3 minutes with ask.timeout exceptions. Build is: distribution-karaf-0.3.0-20150522.085838-1738. I'll send steps to reproduce in an email. Here's the exception:

2015-05-22 07:48:52,740 | INFO | oupCloseable-3-1 | AbstractBGPSessionNegotiator | 227 - org.opendaylight.bgpcep.bgp-rib-impl - 0.4.0.SNAPSHOT | BGP Session established successfully.
2015-05-22 07:53:15,620 | ERROR | lt-dispatcher-39 | LocalThreePhaseCommitCohort | 169 - org.opendaylight.controller.sal-distributed-datastore - 1.2.0.SNAPSHOT | Failed to prepare transaction member-1-txn-6043 on backend
akka.pattern.AskTimeoutException: Ask timed out on ActorSelection[Anchor(akka://opendaylight-cluster-data/), Path(/user/shardmanager-operational/member-1-shard-default-operational#-1012054239)] after [30000 ms]
at akka.pattern.PromiseActorRef$$anonfun$1.apply$mcV$sp(AskSupport.scala:334)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.Scheduler$$anon$7.run(Scheduler.scala:117)[154:com.typesafe.akka.actor:2.3.10]
at scala.concurrent.Future$InternalCallbackExecutor$.scala$concurrent$Future$InternalCallbackExecutor$$unbatchedExecute(Future.scala:694)[151:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b]
at scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:691)[151:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b]
at akka.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(Scheduler.scala:467)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.LightArrayRevolverScheduler$$anon$8.executeBucket$1(Scheduler.scala:419)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.LightArrayRevolverScheduler$$anon$8.nextTick(Scheduler.scala:423)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.LightArrayRevolverScheduler$$anon$8.run(Scheduler.scala:375)[154:com.typesafe.akka.actor:2.3.10]
at java.lang.Thread.run(Thread.java:745)[:1.7.0_79]
2015-05-22 07:53:15,621 | ERROR | lt-dispatcher-38 | LocalThreePhaseCommitCohort | 169 - org.opendaylight.controller.sal-distributed-datastore - 1.2.0.SNAPSHOT | Failed to prepare transaction member-1-txn-4520 on backend
akka.pattern.AskTimeoutException: Ask timed out on ActorSelection[Anchor(akka://opendaylight-cluster-data/), Path(/user/shardmanager-operational/member-1-shard-default-operational#-1012054239)] after [30000 ms]
at akka.pattern.PromiseActorRef$$anonfun$1.apply$mcV$sp(AskSupport.scala:334)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.Scheduler$$anon$7.run(Scheduler.scala:117)[154:com.typesafe.akka.actor:2.3.10]
at scala.concurrent.Future$InternalCallbackExecutor$.scala$concurrent$Future$InternalCallbackExecutor$$unbatchedExecute(Future.scala:694)[151:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b]
at scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:691)[151:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b]
at akka.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(Scheduler.scala:467)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.LightArrayRevolverScheduler$$anon$8.executeBucket$1(Scheduler.scala:419)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.LightArrayRevolverScheduler$$anon$8.nextTick(Scheduler.scala:423)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.LightArrayRevolverScheduler$$anon$8.run(Scheduler.scala:375)[154:com.typesafe.akka.actor:2.3.10]
at java.lang.Thread.run(Thread.java:745)[:1.7.0_79]
2015-05-22 07:53:15,622 | WARN | lt-dispatcher-23 | ConcurrentDOMDataBroker | 169 - org.opendaylight.controller.sal-distributed-datastore - 1.2.0.SNAPSHOT | Tx: DOM-CHAIN-6-2369 Error during phase CAN_COMMIT, starting Abort
akka.pattern.AskTimeoutException: Ask timed out on ActorSelection[Anchor(akka://opendaylight-cluster-data/), Path(/user/shardmanager-operational/member-1-shard-default-operational#-1012054239)] after [30000 ms]
at akka.pattern.PromiseActorRef$$anonfun$1.apply$mcV$sp(AskSupport.scala:334)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.Scheduler$$anon$7.run(Scheduler.scala:117)[154:com.typesafe.akka.actor:2.3.10]
at scala.concurrent.Future$InternalCallbackExecutor$.scala$concurrent$Future$InternalCallbackExecutor$$unbatchedExecute(Future.scala:694)[151:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b]
at scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:691)[151:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b]
at akka.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(Scheduler.scala:467)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.LightArrayRevolverScheduler$$anon$8.executeBucket$1(Scheduler.scala:419)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.LightArrayRevolverScheduler$$anon$8.nextTick(Scheduler.scala:423)[154:com.typesafe.akka.actor:2.3.10]
at akka.actor.LightArrayRevolverScheduler$$anon$8.run(Scheduler.scala:375)[154:com.typesafe.akka.actor:2.3.10]
at java.lang.Thread.run(Thread.java:745)[:1.7.0_79]