* Add two pieces of function to banking_stage:

  1. CostModel as immutable ref shared between threads, to provide estimated cost for transactions.
  2. CostTracker shared between threads, to track transaction costs for a block.

* replace hard coded program ID with id() calls

* Add Account Access Cost as part of TransactionCost. Accout Access cost are weighted differently between read and write, signed and non-signed.

* Establish instruction_execution_cost_table, add function to update or insert instructino cost, unittested. It is read-only for now; next PR will allow Replay to insert realtime insturcction execution cost to the table.

* add test for cost_tracker atomically try_add operation, serves as safety guard for future changes

* check cost against local copy of cost_tracker, return transactions that would exceed limit as unprocessed transaction to be buffered; only apply bank processed transactions cost to tracker;

* bencher to new banking_stage with max cost limit to allow cost model being hit consistently during bench iterations

core/Cargo.toml

@@ -54,6 +54,7 @@ solana-account-decoder = { path = "../account-decoder", version = "=1.8.0" }
 solana-banks-server = { path = "../banks-server", version = "=1.8.0" }
 solana-clap-utils = { path = "../clap-utils", version = "=1.8.0" }
 solana-client = { path = "../client", version = "=1.8.0" }
+solana-config-program = { path = "../programs/config", version = "=1.8.0" }
 solana-faucet = { path = "../faucet", version = "=1.8.0" }
 solana-gossip = { path = "../gossip", version = "=1.8.0" }
 solana-ledger = { path = "../ledger", version = "=1.8.0" }

core/benches/banking_stage.rs

@@ -8,6 +8,8 @@ use log::*;
 use rand::{thread_rng, Rng};
 use rayon::prelude::*;
 use solana_core::banking_stage::{create_test_recorder, BankingStage, BankingStageStats};
+use solana_core::cost_model::CostModel;
+use solana_core::cost_tracker::CostTracker;
 use solana_core::poh_recorder::WorkingBankEntry;
 use solana_gossip::cluster_info::ClusterInfo;
 use solana_gossip::cluster_info::Node;
@@ -32,7 +34,7 @@ use solana_sdk::transaction::Transaction;
 use std::collections::VecDeque;
 use std::sync::atomic::Ordering;
 use std::sync::mpsc::Receiver;
-use std::sync::Arc;
+use std::sync::{Arc, Mutex};
 use std::time::{Duration, Instant};
 use test::Bencher;
 
@@ -91,6 +93,8 @@ fn bench_consume_buffered(bencher: &mut Bencher) {
                 None::<Box<dyn Fn()>>,
                 &BankingStageStats::default(),
                 &recorder,
+                &Arc::new(CostModel::default()),
+                &Arc::new(Mutex::new(CostTracker::new(std::u32::MAX, std::u32::MAX))),
             );
         });
 
@@ -204,13 +208,15 @@ fn bench_banking(bencher: &mut Bencher, tx_type: TransactionType) {
         let cluster_info = ClusterInfo::new_with_invalid_keypair(Node::new_localhost().info);
         let cluster_info = Arc::new(cluster_info);
         let (s, _r) = unbounded();
-        let _banking_stage = BankingStage::new(
+        let _banking_stage = BankingStage::new_with_cost_limit(
             &cluster_info,
             &poh_recorder,
             verified_receiver,
             vote_receiver,
             None,
             s,
+            std::u32::MAX,
+            std::u32::MAX,
         );
         poh_recorder.lock().unwrap().set_bank(&bank);