diff --git a/conf/arb1/dexorder-arb1.toml b/conf/arb1/dexorder-arb1.toml
index a3e03c1..e23d7e8 100644
--- a/conf/arb1/dexorder-arb1.toml
+++ b/conf/arb1/dexorder-arb1.toml
@@ -2,3 +2,4 @@ metadata = ''  # this setting approves no tokens
 account = '${accounts.gas}'
 rpc_url = '${rpc_urls.arbitrum_alchemy}'
 ws_url = '${rpc_urls.arbitrum_alchemy_ws}'
+concurrent_rpc_connections=16
\ No newline at end of file
diff --git a/conf/arb1/logging-arb1.toml b/conf/arb1/logging-arb1.toml
index fb3e7f4..79cad8f 100644
--- a/conf/arb1/logging-arb1.toml
+++ b/conf/arb1/logging-arb1.toml
@@ -10,7 +10,7 @@ level='DEBUG'
 
 [handlers.console]
 class='logging.StreamHandler'
-formatter='default'
+formatter='notime'
 stream='ext://sys.stdout'
 
 [formatters.default]
diff --git a/src/dexorder/event_handler.py b/src/dexorder/event_handler.py
index 6f83236..89b3301 100644
--- a/src/dexorder/event_handler.py
+++ b/src/dexorder/event_handler.py
@@ -7,7 +7,7 @@ from dexorder import current_pub, minutely
 from dexorder.base.chain import current_chain
 from dexorder.base.order import TrancheKey, OrderKey
 from dexorder.base.orderlib import SwapOrderState
-from dexorder.blocks import get_block_timestamp, current_block
+from dexorder.blocks import get_block_timestamp
 from dexorder.contract.dexorder import vault_address, VaultContract, get_factory_contract
 from dexorder.impls import get_impl_version
 from dexorder.ohlc import ohlcs
@@ -31,7 +31,6 @@ def init():
 
 
 async def handle_order_placed(event: EventData):
-    log.debug(f'handle order placed {event}')
     # event DexorderPlaced (uint64 startOrderIndex, uint8 numOrders);
     addr = event['address']
     start_index = int(event['args']['startOrderIndex'])
@@ -57,7 +56,6 @@ async def handle_order_placed(event: EventData):
 
 
 async def handle_swap_filled(event: EventData):
-    log.debug('handle_swap_filled')
     # event DexorderSwapFilled (uint64 orderIndex, uint8 trancheIndex, uint256 amountIn, uint256 amountOut);
     log.debug(f'DexorderSwapFilled {event}')
     args = event['args']