From 288d9dcbdf3cb892205d5c006e1213df05187488 Mon Sep 17 00:00:00 2001
From: Claude Agent <claude@stakesquid.eu>
Date: Mon, 29 Jun 2026 15:11:55 +0000
Subject: [PATCH] op-mainnet: lower TransactionLookup chunk_size to 500k

Reduce stages.transaction_lookup.chunk_size from 5M to 500k in reth.toml
to prevent multi-hour pipeline stalls during large checkpoint windows on
op-reth-pruned-trace (rpc-de-32).
---
 op/op/mainnet/reth/reth.toml | 106 +++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 op/op/mainnet/reth/reth.toml

diff --git a/op/op/mainnet/reth/reth.toml b/op/op/mainnet/reth/reth.toml
new file mode 100644
index 00000000..90fd7c95
--- /dev/null
+++ b/op/op/mainnet/reth/reth.toml
@@ -0,0 +1,106 @@
+[stages.era]
+
+[stages.headers]
+downloader_max_concurrent_requests = 100
+downloader_min_concurrent_requests = 5
+downloader_max_buffered_responses = 100
+downloader_request_limit = 1000
+commit_threshold = 10000
+
+[stages.bodies]
+downloader_request_limit = 200
+downloader_stream_batch_size = 1000
+downloader_max_buffered_blocks_size_bytes = 2147483648
+downloader_min_concurrent_requests = 5
+downloader_max_concurrent_requests = 100
+
+[stages.sender_recovery]
+commit_threshold = 5000000
+
+[stages.execution]
+max_blocks = 500000
+max_changes = 5000000
+max_cumulative_gas = 1500000000000
+max_duration = "10m"
+
+[stages.prune]
+commit_threshold = 1000000
+
+[stages.account_hashing]
+clean_threshold = 500000
+commit_threshold = 100000
+
+[stages.storage_hashing]
+clean_threshold = 500000
+commit_threshold = 100000
+
+[stages.merkle]
+incremental_threshold = 7000
+rebuild_threshold = 100000
+
+[stages.transaction_lookup]
+chunk_size = 500000
+
+[stages.index_account_history]
+commit_threshold = 100000
+
+[stages.index_storage_history]
+commit_threshold = 100000
+
+[stages.etl]
+file_size = 524288000
+
+[prune]
+block_interval = 5
+
+[prune.segments.merkle_changesets]
+distance = 10064
+
+[peers]
+refill_slots_interval = "5s"
+trusted_nodes = []
+trusted_nodes_only = false
+trusted_nodes_resolution_interval = "1h"
+max_backoff_count = 5
+ban_duration = "12h"
+incoming_ip_throttle_duration = "30s"
+
+[peers.connection_info]
+max_outbound = 100
+max_inbound = 30
+max_concurrent_outbound_dials = 15
+
+[peers.reputation_weights]
+bad_message = -16384
+bad_block = -16384
+bad_transactions = -16384
+already_seen_transactions = 0
+timeout = -4096
+bad_protocol = -2147483648
+failed_to_connect = -25600
+dropped = -4096
+bad_announcement = -1024
+
+[peers.backoff_durations]
+low = "30s"
+medium = "3m"
+high = "15m"
+max = "1h"
+
+[sessions]
+session_command_buffer = 32
+session_event_buffer = 260
+
+[sessions.limits]
+
+[sessions.initial_internal_request_timeout]
+secs = 20
+nanos = 0
+
+[sessions.protocol_breach_request_timeout]
+secs = 120
+nanos = 0
+
+[sessions.pending_session_timeout]
+secs = 20
+nanos = 0