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chore(engine): disable BAL parallel execution by default #23764

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Merged
pepyakin merged 1 commit into from
Apr 28, 2026
+6 −6
Merged

chore(engine): disable BAL parallel execution by default #23764

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4 changes: 2 additions & 2 deletions crates/engine/primitives/src/config.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -239,7 +239,7 @@ impl Default for TreeConfig {
share_execution_cache_with_payload_builder: false,
share_sparse_trie_with_payload_builder: false,
suppress_persistence_during_build: false,
disable_bal_parallel_execution: false,
disable_bal_parallel_execution: true,
disable_bal_parallel_state_root: false,
disable_bal_batch_io: false,
#[cfg(feature = "trie-debug")]
Expand Down Expand Up @@ -316,7 +316,7 @@ impl TreeConfig {
share_execution_cache_with_payload_builder,
share_sparse_trie_with_payload_builder,
suppress_persistence_during_build: false,
disable_bal_parallel_execution: false,
disable_bal_parallel_execution: true,
disable_bal_parallel_state_root: false,
disable_bal_batch_io: false,
#[cfg(feature = "trie-debug")]
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6 changes: 3 additions & 3 deletions crates/node/core/src/args/engine.rs
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Expand Up @@ -289,7 +289,7 @@ impl Default for DefaultEngineValues {
share_execution_cache_with_payload_builder: false,
share_sparse_trie_with_payload_builder: false,
suppress_persistence_during_build: false,
bal_parallel_execution_disabled: false,
bal_parallel_execution_disabled: true,
bal_parallel_state_root_disabled: false,
}
}
Expand Down Expand Up @@ -511,8 +511,8 @@ pub struct EngineArgs {
)]
pub suppress_persistence_during_build: bool,

/// Disable BAL (Block Access List, EIP-7928) based parallel execution. When set, falls back
/// to transaction-based prewarming even when a BAL is available.
/// Disable BAL (Block Access List, EIP-7928) based parallel execution. Defaults to disabled,
/// falling back to transaction-based prewarming even when a BAL is available.
#[arg(long = "engine.disable-bal-parallel-execution", default_value_t = DefaultEngineValues::get_global().bal_parallel_execution_disabled)]
pub bal_parallel_execution_disabled: bool,

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2 changes: 1 addition & 1 deletion docs/vocs/docs/pages/cli/reth/node.mdx
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Expand Up @@ -1074,7 +1074,7 @@ Engine:
When enabled, persistence cycles are deferred from the moment an FCU with payload attributes arrives until the next FCU clears the build. Useful on chains with short block times where persistence I/O can interfere with block building latency.

--engine.disable-bal-parallel-execution
Disable BAL (Block Access List, EIP-7928) based parallel execution. When set, falls back to transaction-based prewarming even when a BAL is available
Disable BAL (Block Access List, EIP-7928) based parallel execution. Defaults to disabled, falling back to transaction-based prewarming even when a BAL is available

--engine.disable-bal-parallel-state-root
Disable BAL-driven parallel state root computation. When set, the BAL hashed post state is not sent to the multiproof task for early parallel state root computation
Expand Down
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