message: Only report block generation time if >10ms.
diff: @@ -365,9 +365,12 @@ signed_block chain_controller::_generate_block(
  pending_block.producer_changes = get_global_properties().active_producers - new_schedule;
  }
  - auto end = fc::time_point::now();
  - ilog( "generation took ${x} ms", ("x", (end-start).count()/1000) );
  - FC_ASSERT( end - start < fc::milliseconds( 250 ), "block took too long to build" );
  + const auto end = fc::time_point::now();
  + const auto gen_time = end - start;
  + if( gen_time > fc::milliseconds(10) ) {
  + ilog("generation took ${x} ms", ("x", gen_time.count() / 1000));
  + FC_ASSERT(gen_time < fc::milliseconds(250), "block took too long to build");
  + }
  if( !(skip & skip_producer_signature) )
  pending_block.sign( block_signing_private_key );
  