Minor optimisations.

libethereum/BlockChain.cpp

@@ -325,7 +325,7 @@ tuple<ImportRoute, bool, unsigned> BlockChain::sync(BlockQueue& _bq, OverlayDB c
 			{
 				// Nonce & uncle nonces already verified in verification thread at this point.
 				ImportRoute r;
-				DEV_TIMED_ABOVE("Block import", 500)
+				DEV_TIMED_ABOVE("Block import " + toString(block.verified.info.number), 500)
 					r = import(block.verified, _stateDB, ImportRequirements::Default & ~ImportRequirements::ValidNonce & ~ImportRequirements::CheckUncles);
 				fresh += r.liveBlocks;
 				dead += r.deadBlocks;

libethereum/Client.cpp

@@ -89,7 +89,7 @@ void VersionChecker::setOk()
 
 ImportResult Client::queueBlock(bytes const& _block, bool _isSafe)
 {
-	if (m_bq.status().verified + m_bq.status().verifying + m_bq.status().unverified > 500)
+	if (m_bq.status().verified + m_bq.status().verifying + m_bq.status().unverified > 10000)
 		this_thread::sleep_for(std::chrono::milliseconds(500));
 	return m_bq.import(&_block, bc(), _isSafe);
 }