From f64242847d5e916b19edaca1b7f6e5089e954867 Mon Sep 17 00:00:00 2001
From: Tao Zhu <82401714+taozhu-chicago@users.noreply.github.com>
Date: Fri, 23 Sep 2022 16:15:31 -0500
Subject: [PATCH] increase instruction data cost (#27992)

---
 runtime/src/block_cost_limits.rs | 2 +-
 runtime/src/cost_model.rs        | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/runtime/src/block_cost_limits.rs b/runtime/src/block_cost_limits.rs
index cc279b4dd7..337eb49680 100644
--- a/runtime/src/block_cost_limits.rs
+++ b/runtime/src/block_cost_limits.rs
@@ -27,7 +27,7 @@ pub const SIGNATURE_COST: u64 = COMPUTE_UNIT_TO_US_RATIO * 24;
 /// Number of compute units for one write lock
 pub const WRITE_LOCK_UNITS: u64 = COMPUTE_UNIT_TO_US_RATIO * 10;
 /// Number of data bytes per compute units
-pub const DATA_BYTES_UNITS: u64 = 550 /*bytes per us*/ / COMPUTE_UNIT_TO_US_RATIO;
+pub const INSTRUCTION_DATA_BYTES_COST: u64 = 140 /*bytes per us*/ / COMPUTE_UNIT_TO_US_RATIO;
 // Number of compute units for each built-in programs
 lazy_static! {
     /// Number of compute units for each built-in programs
diff --git a/runtime/src/cost_model.rs b/runtime/src/cost_model.rs
index 7ce546ab64..ea854787dd 100644
--- a/runtime/src/cost_model.rs
+++ b/runtime/src/cost_model.rs
@@ -180,7 +180,7 @@ impl CostModel {
         }
         tx_cost.builtins_execution_cost = builtin_costs;
         tx_cost.bpf_execution_cost = bpf_costs;
-        tx_cost.data_bytes_cost = data_bytes_len_total / DATA_BYTES_UNITS;
+        tx_cost.data_bytes_cost = data_bytes_len_total / INSTRUCTION_DATA_BYTES_COST;
     }
 
     fn calculate_account_data_size_on_deserialized_system_instruction(
@@ -367,7 +367,7 @@ mod tests {
         testee.get_transaction_cost(&mut tx_cost, &simple_transaction);
         assert_eq!(*expected_execution_cost, tx_cost.builtins_execution_cost);
         assert_eq!(0, tx_cost.bpf_execution_cost);
-        assert_eq!(0, tx_cost.data_bytes_cost);
+        assert_eq!(3, tx_cost.data_bytes_cost);
     }
 
     #[test]
@@ -397,7 +397,7 @@ mod tests {
         testee.get_transaction_cost(&mut tx_cost, &tx);
         assert_eq!(expected_cost, tx_cost.builtins_execution_cost);
         assert_eq!(0, tx_cost.bpf_execution_cost);
-        assert_eq!(1, tx_cost.data_bytes_cost);
+        assert_eq!(6, tx_cost.data_bytes_cost);
     }
 
     #[test]