2021-06-01 07:16:17 -07:00
|
|
|
//! 'cost_model` provides service to estimate a transaction's cost
|
|
|
|
//! It does so by analyzing accounts the transaction touches, and instructions
|
|
|
|
//! it includes. Using historical data as guideline, it estimates cost of
|
|
|
|
//! reading/writing account, the sum of that comes up to "account access cost";
|
|
|
|
//! Instructions take time to execute, both historical and runtime data are
|
|
|
|
//! used to determine each instruction's execution time, the sum of that
|
|
|
|
//! is transaction's "execution cost"
|
|
|
|
//! The main function is `calculate_cost` which returns a TransactionCost struct.
|
|
|
|
//!
|
2021-06-09 15:10:59 -07:00
|
|
|
use crate::execute_cost_table::ExecuteCostTable;
|
2021-06-01 07:16:17 -07:00
|
|
|
use log::*;
|
2021-06-09 15:10:59 -07:00
|
|
|
use solana_sdk::{message::Message, pubkey::Pubkey, transaction::Transaction};
|
2021-06-01 07:16:17 -07:00
|
|
|
use std::collections::HashMap;
|
|
|
|
|
2021-06-09 15:10:59 -07:00
|
|
|
// Guestimated from mainnet-beta data, sigver averages 1us, read averages 7us and write avergae 25us
|
|
|
|
const SIGNED_WRITABLE_ACCOUNT_ACCESS_COST: u64 = 1 + 25;
|
|
|
|
const SIGNED_READONLY_ACCOUNT_ACCESS_COST: u64 = 1 + 7;
|
|
|
|
const NON_SIGNED_WRITABLE_ACCOUNT_ACCESS_COST: u64 = 25;
|
|
|
|
const NON_SIGNED_READONLY_ACCOUNT_ACCESS_COST: u64 = 7;
|
|
|
|
|
|
|
|
// Sampled from mainnet-beta, the instruction execution timings stats are (in us):
|
|
|
|
// min=194, max=62164, avg=8214.49, med=2243
|
|
|
|
pub const ACCOUNT_MAX_COST: u64 = 100_000_000;
|
|
|
|
pub const BLOCK_MAX_COST: u64 = 2_500_000_000;
|
2021-06-01 07:16:17 -07:00
|
|
|
|
2021-06-28 19:34:04 -07:00
|
|
|
const DEMOTE_SYSVAR_WRITE_LOCKS: bool = true;
|
|
|
|
|
2021-06-01 07:16:17 -07:00
|
|
|
// cost of transaction is made of account_access_cost and instruction execution_cost
|
|
|
|
// where
|
|
|
|
// account_access_cost is the sum of read/write/sign all accounts included in the transaction
|
|
|
|
// read is cheaper than write.
|
|
|
|
// execution_cost is the sum of all instructions execution cost, which is
|
|
|
|
// observed during runtime and feedback by Replay
|
|
|
|
#[derive(Default, Debug)]
|
|
|
|
pub struct TransactionCost {
|
|
|
|
pub writable_accounts: Vec<Pubkey>,
|
2021-06-09 15:10:59 -07:00
|
|
|
pub account_access_cost: u64,
|
|
|
|
pub execution_cost: u64,
|
2021-06-01 07:16:17 -07:00
|
|
|
}
|
|
|
|
|
2021-06-28 19:34:04 -07:00
|
|
|
impl TransactionCost {
|
|
|
|
pub fn new_with_capacity(capacity: usize) -> Self {
|
|
|
|
Self {
|
|
|
|
writable_accounts: Vec::with_capacity(capacity),
|
|
|
|
..Self::default()
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn reset(&mut self) {
|
|
|
|
self.writable_accounts.clear();
|
|
|
|
self.account_access_cost = 0;
|
|
|
|
self.execution_cost = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-06-01 07:16:17 -07:00
|
|
|
#[derive(Debug)]
|
|
|
|
pub struct CostModel {
|
2021-06-09 15:10:59 -07:00
|
|
|
account_cost_limit: u64,
|
|
|
|
block_cost_limit: u64,
|
|
|
|
instruction_execution_cost_table: ExecuteCostTable,
|
2021-06-01 07:16:17 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
impl Default for CostModel {
|
|
|
|
fn default() -> Self {
|
|
|
|
CostModel::new(ACCOUNT_MAX_COST, BLOCK_MAX_COST)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl CostModel {
|
2021-06-09 15:10:59 -07:00
|
|
|
pub fn new(chain_max: u64, block_max: u64) -> Self {
|
2021-06-01 07:16:17 -07:00
|
|
|
Self {
|
|
|
|
account_cost_limit: chain_max,
|
|
|
|
block_cost_limit: block_max,
|
2021-06-09 15:10:59 -07:00
|
|
|
instruction_execution_cost_table: ExecuteCostTable::default(),
|
2021-06-01 07:16:17 -07:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-06-09 15:10:59 -07:00
|
|
|
pub fn get_account_cost_limit(&self) -> u64 {
|
2021-06-01 07:16:17 -07:00
|
|
|
self.account_cost_limit
|
|
|
|
}
|
|
|
|
|
2021-06-09 15:10:59 -07:00
|
|
|
pub fn get_block_cost_limit(&self) -> u64 {
|
2021-06-01 07:16:17 -07:00
|
|
|
self.block_cost_limit
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn calculate_cost(&self, transaction: &Transaction) -> TransactionCost {
|
|
|
|
let (
|
|
|
|
signed_writable_accounts,
|
|
|
|
signed_readonly_accounts,
|
|
|
|
non_signed_writable_accounts,
|
|
|
|
non_signed_readonly_accounts,
|
|
|
|
) = CostModel::sort_accounts_by_type(transaction.message());
|
|
|
|
|
|
|
|
let mut cost = TransactionCost {
|
|
|
|
writable_accounts: vec![],
|
|
|
|
account_access_cost: CostModel::find_account_access_cost(
|
|
|
|
&signed_writable_accounts,
|
|
|
|
&signed_readonly_accounts,
|
|
|
|
&non_signed_writable_accounts,
|
|
|
|
&non_signed_readonly_accounts,
|
|
|
|
),
|
2021-06-18 06:34:46 -07:00
|
|
|
execution_cost: self.find_transaction_cost(transaction),
|
2021-06-01 07:16:17 -07:00
|
|
|
};
|
|
|
|
cost.writable_accounts.extend(&signed_writable_accounts);
|
|
|
|
cost.writable_accounts.extend(&non_signed_writable_accounts);
|
|
|
|
debug!("transaction {:?} has cost {:?}", transaction, cost);
|
|
|
|
cost
|
|
|
|
}
|
|
|
|
|
2021-06-28 19:34:04 -07:00
|
|
|
// calculate `transaction` cost, the result is passed back to caller via mutable
|
|
|
|
// parameter `cost`. Existing content in `cost` will be erased before adding new content
|
|
|
|
// This is to allow this function to reuse pre-allocated memory, as this function
|
|
|
|
// is often on hot-path.
|
|
|
|
pub fn calculate_cost_no_alloc(&self, transaction: &Transaction, cost: &mut TransactionCost) {
|
|
|
|
cost.reset();
|
|
|
|
|
|
|
|
let message = transaction.message();
|
|
|
|
message.account_keys.iter().enumerate().for_each(|(i, k)| {
|
|
|
|
let is_signer = message.is_signer(i);
|
|
|
|
let is_writable = message.is_writable(i, DEMOTE_SYSVAR_WRITE_LOCKS);
|
|
|
|
|
|
|
|
if is_signer && is_writable {
|
|
|
|
cost.writable_accounts.push(*k);
|
|
|
|
cost.account_access_cost += SIGNED_WRITABLE_ACCOUNT_ACCESS_COST;
|
|
|
|
} else if is_signer && !is_writable {
|
|
|
|
cost.account_access_cost += SIGNED_READONLY_ACCOUNT_ACCESS_COST;
|
|
|
|
} else if !is_signer && is_writable {
|
|
|
|
cost.writable_accounts.push(*k);
|
|
|
|
cost.account_access_cost += NON_SIGNED_WRITABLE_ACCOUNT_ACCESS_COST;
|
|
|
|
} else {
|
|
|
|
cost.account_access_cost += NON_SIGNED_READONLY_ACCOUNT_ACCESS_COST;
|
|
|
|
}
|
|
|
|
});
|
|
|
|
cost.execution_cost = self.find_transaction_cost(transaction);
|
|
|
|
debug!("transaction {:?} has cost {:?}", transaction, cost);
|
|
|
|
}
|
|
|
|
|
2021-06-01 07:16:17 -07:00
|
|
|
// To update or insert instruction cost to table.
|
|
|
|
pub fn upsert_instruction_cost(
|
|
|
|
&mut self,
|
|
|
|
program_key: &Pubkey,
|
2021-06-09 15:10:59 -07:00
|
|
|
cost: &u64,
|
|
|
|
) -> Result<u64, &'static str> {
|
|
|
|
self.instruction_execution_cost_table
|
|
|
|
.upsert(program_key, cost);
|
|
|
|
match self.instruction_execution_cost_table.get_cost(program_key) {
|
|
|
|
Some(cost) => Ok(*cost),
|
|
|
|
None => Err("failed to upsert to ExecuteCostTable"),
|
|
|
|
}
|
2021-06-01 07:16:17 -07:00
|
|
|
}
|
|
|
|
|
2021-06-09 15:10:59 -07:00
|
|
|
pub fn get_instruction_cost_table(&self) -> &HashMap<Pubkey, u64> {
|
|
|
|
self.instruction_execution_cost_table.get_cost_table()
|
|
|
|
}
|
|
|
|
|
|
|
|
fn find_instruction_cost(&self, program_key: &Pubkey) -> u64 {
|
2021-06-18 06:34:46 -07:00
|
|
|
match self.instruction_execution_cost_table.get_cost(program_key) {
|
2021-06-01 07:16:17 -07:00
|
|
|
Some(cost) => *cost,
|
|
|
|
None => {
|
2021-06-09 15:10:59 -07:00
|
|
|
let default_value = self.instruction_execution_cost_table.get_mode();
|
2021-06-01 07:16:17 -07:00
|
|
|
debug!(
|
2021-06-09 15:10:59 -07:00
|
|
|
"Program key {:?} does not have assigned cost, using mode {}",
|
|
|
|
program_key, default_value
|
2021-06-01 07:16:17 -07:00
|
|
|
);
|
2021-06-09 15:10:59 -07:00
|
|
|
default_value
|
2021-06-01 07:16:17 -07:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-06-09 15:10:59 -07:00
|
|
|
fn find_transaction_cost(&self, transaction: &Transaction) -> u64 {
|
|
|
|
let mut cost: u64 = 0;
|
2021-06-01 07:16:17 -07:00
|
|
|
|
|
|
|
for instruction in &transaction.message().instructions {
|
|
|
|
let program_id =
|
|
|
|
transaction.message().account_keys[instruction.program_id_index as usize];
|
|
|
|
let instruction_cost = self.find_instruction_cost(&program_id);
|
|
|
|
trace!(
|
|
|
|
"instruction {:?} has cost of {}",
|
|
|
|
instruction,
|
|
|
|
instruction_cost
|
|
|
|
);
|
|
|
|
cost += instruction_cost;
|
|
|
|
}
|
|
|
|
cost
|
|
|
|
}
|
|
|
|
|
|
|
|
fn find_account_access_cost(
|
|
|
|
signed_writable_accounts: &[Pubkey],
|
|
|
|
signed_readonly_accounts: &[Pubkey],
|
|
|
|
non_signed_writable_accounts: &[Pubkey],
|
|
|
|
non_signed_readonly_accounts: &[Pubkey],
|
2021-06-09 15:10:59 -07:00
|
|
|
) -> u64 {
|
2021-06-01 07:16:17 -07:00
|
|
|
let mut cost = 0;
|
2021-06-09 15:10:59 -07:00
|
|
|
cost += signed_writable_accounts.len() as u64 * SIGNED_WRITABLE_ACCOUNT_ACCESS_COST;
|
|
|
|
cost += signed_readonly_accounts.len() as u64 * SIGNED_READONLY_ACCOUNT_ACCESS_COST;
|
|
|
|
cost += non_signed_writable_accounts.len() as u64 * NON_SIGNED_WRITABLE_ACCOUNT_ACCESS_COST;
|
|
|
|
cost += non_signed_readonly_accounts.len() as u64 * NON_SIGNED_READONLY_ACCOUNT_ACCESS_COST;
|
2021-06-01 07:16:17 -07:00
|
|
|
cost
|
|
|
|
}
|
|
|
|
|
|
|
|
fn sort_accounts_by_type(
|
|
|
|
message: &Message,
|
|
|
|
) -> (Vec<Pubkey>, Vec<Pubkey>, Vec<Pubkey>, Vec<Pubkey>) {
|
|
|
|
let demote_sysvar_write_locks = true;
|
|
|
|
let mut signer_writable: Vec<Pubkey> = vec![];
|
|
|
|
let mut signer_readonly: Vec<Pubkey> = vec![];
|
|
|
|
let mut non_signer_writable: Vec<Pubkey> = vec![];
|
|
|
|
let mut non_signer_readonly: Vec<Pubkey> = vec![];
|
|
|
|
message.account_keys.iter().enumerate().for_each(|(i, k)| {
|
|
|
|
let is_signer = message.is_signer(i);
|
|
|
|
let is_writable = message.is_writable(i, demote_sysvar_write_locks);
|
|
|
|
|
|
|
|
if is_signer && is_writable {
|
|
|
|
signer_writable.push(*k);
|
|
|
|
} else if is_signer && !is_writable {
|
|
|
|
signer_readonly.push(*k);
|
|
|
|
} else if !is_signer && is_writable {
|
|
|
|
non_signer_writable.push(*k);
|
|
|
|
} else {
|
|
|
|
non_signer_readonly.push(*k);
|
|
|
|
}
|
|
|
|
});
|
|
|
|
(
|
|
|
|
signer_writable,
|
|
|
|
signer_readonly,
|
|
|
|
non_signer_writable,
|
|
|
|
non_signer_readonly,
|
|
|
|
)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(test)]
|
|
|
|
mod tests {
|
|
|
|
use super::*;
|
|
|
|
use solana_runtime::{
|
|
|
|
bank::Bank,
|
|
|
|
genesis_utils::{create_genesis_config, GenesisConfigInfo},
|
|
|
|
};
|
|
|
|
use solana_sdk::{
|
2021-06-09 15:10:59 -07:00
|
|
|
bpf_loader,
|
2021-06-01 07:16:17 -07:00
|
|
|
hash::Hash,
|
|
|
|
instruction::CompiledInstruction,
|
|
|
|
message::Message,
|
|
|
|
signature::{Keypair, Signer},
|
|
|
|
system_instruction::{self},
|
2021-06-09 15:10:59 -07:00
|
|
|
system_program, system_transaction,
|
2021-06-01 07:16:17 -07:00
|
|
|
};
|
|
|
|
use std::{
|
|
|
|
str::FromStr,
|
|
|
|
sync::{Arc, RwLock},
|
|
|
|
thread::{self, JoinHandle},
|
|
|
|
};
|
|
|
|
|
|
|
|
fn test_setup() -> (Keypair, Hash) {
|
|
|
|
solana_logger::setup();
|
|
|
|
let GenesisConfigInfo {
|
|
|
|
genesis_config,
|
|
|
|
mint_keypair,
|
|
|
|
..
|
|
|
|
} = create_genesis_config(10);
|
|
|
|
let bank = Arc::new(Bank::new_no_wallclock_throttle(&genesis_config));
|
|
|
|
let start_hash = bank.last_blockhash();
|
|
|
|
(mint_keypair, start_hash)
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_cost_model_instruction_cost() {
|
2021-06-09 15:10:59 -07:00
|
|
|
let mut testee = CostModel::default();
|
2021-06-01 07:16:17 -07:00
|
|
|
|
2021-06-09 15:10:59 -07:00
|
|
|
let known_key = Pubkey::from_str("known11111111111111111111111111111111111111").unwrap();
|
|
|
|
testee.upsert_instruction_cost(&known_key, &100).unwrap();
|
2021-06-01 07:16:17 -07:00
|
|
|
// find cost for known programs
|
2021-06-09 15:10:59 -07:00
|
|
|
assert_eq!(100, testee.find_instruction_cost(&known_key));
|
|
|
|
|
|
|
|
testee
|
|
|
|
.upsert_instruction_cost(&bpf_loader::id(), &1999)
|
|
|
|
.unwrap();
|
|
|
|
assert_eq!(1999, testee.find_instruction_cost(&bpf_loader::id()));
|
2021-06-01 07:16:17 -07:00
|
|
|
|
|
|
|
// unknown program is assigned with default cost
|
|
|
|
assert_eq!(
|
2021-06-09 15:10:59 -07:00
|
|
|
testee.instruction_execution_cost_table.get_mode(),
|
2021-06-01 07:16:17 -07:00
|
|
|
testee.find_instruction_cost(
|
|
|
|
&Pubkey::from_str("unknown111111111111111111111111111111111111").unwrap()
|
|
|
|
)
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_cost_model_simple_transaction() {
|
|
|
|
let (mint_keypair, start_hash) = test_setup();
|
|
|
|
|
|
|
|
let keypair = Keypair::new();
|
|
|
|
let simple_transaction =
|
|
|
|
system_transaction::transfer(&mint_keypair, &keypair.pubkey(), 2, start_hash);
|
|
|
|
debug!(
|
|
|
|
"system_transaction simple_transaction {:?}",
|
|
|
|
simple_transaction
|
|
|
|
);
|
|
|
|
|
|
|
|
// expected cost for one system transfer instructions
|
2021-06-09 15:10:59 -07:00
|
|
|
let expected_cost = 8;
|
2021-06-01 07:16:17 -07:00
|
|
|
|
2021-06-09 15:10:59 -07:00
|
|
|
let mut testee = CostModel::default();
|
|
|
|
testee
|
|
|
|
.upsert_instruction_cost(&system_program::id(), &expected_cost)
|
|
|
|
.unwrap();
|
2021-06-01 07:16:17 -07:00
|
|
|
assert_eq!(
|
|
|
|
expected_cost,
|
|
|
|
testee.find_transaction_cost(&simple_transaction)
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_cost_model_transaction_many_transfer_instructions() {
|
|
|
|
let (mint_keypair, start_hash) = test_setup();
|
|
|
|
|
|
|
|
let key1 = solana_sdk::pubkey::new_rand();
|
|
|
|
let key2 = solana_sdk::pubkey::new_rand();
|
|
|
|
let instructions =
|
|
|
|
system_instruction::transfer_many(&mint_keypair.pubkey(), &[(key1, 1), (key2, 1)]);
|
|
|
|
let message = Message::new(&instructions, Some(&mint_keypair.pubkey()));
|
|
|
|
let tx = Transaction::new(&[&mint_keypair], message, start_hash);
|
|
|
|
debug!("many transfer transaction {:?}", tx);
|
|
|
|
|
|
|
|
// expected cost for two system transfer instructions
|
2021-06-09 15:10:59 -07:00
|
|
|
let program_cost = 8;
|
|
|
|
let expected_cost = program_cost * 2;
|
2021-06-01 07:16:17 -07:00
|
|
|
|
2021-06-09 15:10:59 -07:00
|
|
|
let mut testee = CostModel::default();
|
|
|
|
testee
|
|
|
|
.upsert_instruction_cost(&system_program::id(), &program_cost)
|
|
|
|
.unwrap();
|
2021-06-01 07:16:17 -07:00
|
|
|
assert_eq!(expected_cost, testee.find_transaction_cost(&tx));
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_cost_model_message_many_different_instructions() {
|
|
|
|
let (mint_keypair, start_hash) = test_setup();
|
|
|
|
|
|
|
|
// construct a transaction with multiple random instructions
|
|
|
|
let key1 = solana_sdk::pubkey::new_rand();
|
|
|
|
let key2 = solana_sdk::pubkey::new_rand();
|
|
|
|
let prog1 = solana_sdk::pubkey::new_rand();
|
|
|
|
let prog2 = solana_sdk::pubkey::new_rand();
|
|
|
|
let instructions = vec![
|
|
|
|
CompiledInstruction::new(3, &(), vec![0, 1]),
|
|
|
|
CompiledInstruction::new(4, &(), vec![0, 2]),
|
|
|
|
];
|
|
|
|
let tx = Transaction::new_with_compiled_instructions(
|
|
|
|
&[&mint_keypair],
|
|
|
|
&[key1, key2],
|
|
|
|
start_hash,
|
|
|
|
vec![prog1, prog2],
|
|
|
|
instructions,
|
|
|
|
);
|
|
|
|
debug!("many random transaction {:?}", tx);
|
|
|
|
|
|
|
|
let testee = CostModel::default();
|
2021-06-09 15:10:59 -07:00
|
|
|
let result = testee.find_transaction_cost(&tx);
|
|
|
|
|
|
|
|
// expected cost for two random/unknown program is
|
|
|
|
let expected_cost = testee.instruction_execution_cost_table.get_mode() * 2;
|
|
|
|
assert_eq!(expected_cost, result);
|
2021-06-01 07:16:17 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_cost_model_sort_message_accounts_by_type() {
|
|
|
|
// construct a transaction with two random instructions with same signer
|
|
|
|
let signer1 = Keypair::new();
|
|
|
|
let signer2 = Keypair::new();
|
|
|
|
let key1 = Pubkey::new_unique();
|
|
|
|
let key2 = Pubkey::new_unique();
|
|
|
|
let prog1 = Pubkey::new_unique();
|
|
|
|
let prog2 = Pubkey::new_unique();
|
|
|
|
let instructions = vec![
|
|
|
|
CompiledInstruction::new(4, &(), vec![0, 2]),
|
|
|
|
CompiledInstruction::new(5, &(), vec![1, 3]),
|
|
|
|
];
|
|
|
|
let tx = Transaction::new_with_compiled_instructions(
|
|
|
|
&[&signer1, &signer2],
|
|
|
|
&[key1, key2],
|
|
|
|
Hash::new_unique(),
|
|
|
|
vec![prog1, prog2],
|
|
|
|
instructions,
|
|
|
|
);
|
|
|
|
debug!("many random transaction {:?}", tx);
|
|
|
|
|
|
|
|
let (
|
|
|
|
signed_writable_accounts,
|
|
|
|
signed_readonly_accounts,
|
|
|
|
non_signed_writable_accounts,
|
|
|
|
non_signed_readonly_accounts,
|
|
|
|
) = CostModel::sort_accounts_by_type(tx.message());
|
|
|
|
|
|
|
|
assert_eq!(2, signed_writable_accounts.len());
|
|
|
|
assert_eq!(signer1.pubkey(), signed_writable_accounts[0]);
|
|
|
|
assert_eq!(signer2.pubkey(), signed_writable_accounts[1]);
|
|
|
|
assert_eq!(0, signed_readonly_accounts.len());
|
|
|
|
assert_eq!(2, non_signed_writable_accounts.len());
|
|
|
|
assert_eq!(key1, non_signed_writable_accounts[0]);
|
|
|
|
assert_eq!(key2, non_signed_writable_accounts[1]);
|
|
|
|
assert_eq!(2, non_signed_readonly_accounts.len());
|
|
|
|
assert_eq!(prog1, non_signed_readonly_accounts[0]);
|
|
|
|
assert_eq!(prog2, non_signed_readonly_accounts[1]);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_cost_model_insert_instruction_cost() {
|
|
|
|
let key1 = Pubkey::new_unique();
|
|
|
|
let cost1 = 100;
|
|
|
|
|
|
|
|
let mut cost_model = CostModel::default();
|
|
|
|
// Using default cost for unknown instruction
|
|
|
|
assert_eq!(
|
2021-06-09 15:10:59 -07:00
|
|
|
cost_model.instruction_execution_cost_table.get_mode(),
|
2021-06-01 07:16:17 -07:00
|
|
|
cost_model.find_instruction_cost(&key1)
|
|
|
|
);
|
|
|
|
|
|
|
|
// insert instruction cost to table
|
|
|
|
assert!(cost_model.upsert_instruction_cost(&key1, &cost1).is_ok());
|
|
|
|
|
|
|
|
// now it is known insturction with known cost
|
|
|
|
assert_eq!(cost1, cost_model.find_instruction_cost(&key1));
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_cost_model_calculate_cost() {
|
|
|
|
let (mint_keypair, start_hash) = test_setup();
|
|
|
|
let tx =
|
|
|
|
system_transaction::transfer(&mint_keypair, &Keypair::new().pubkey(), 2, start_hash);
|
|
|
|
|
|
|
|
let expected_account_cost = SIGNED_WRITABLE_ACCOUNT_ACCESS_COST
|
|
|
|
+ NON_SIGNED_WRITABLE_ACCOUNT_ACCESS_COST
|
|
|
|
+ NON_SIGNED_READONLY_ACCOUNT_ACCESS_COST;
|
2021-06-09 15:10:59 -07:00
|
|
|
let expected_execution_cost = 8;
|
2021-06-01 07:16:17 -07:00
|
|
|
|
2021-06-09 15:10:59 -07:00
|
|
|
let mut cost_model = CostModel::default();
|
|
|
|
cost_model
|
|
|
|
.upsert_instruction_cost(&system_program::id(), &expected_execution_cost)
|
|
|
|
.unwrap();
|
2021-06-01 07:16:17 -07:00
|
|
|
let tx_cost = cost_model.calculate_cost(&tx);
|
|
|
|
assert_eq!(expected_account_cost, tx_cost.account_access_cost);
|
|
|
|
assert_eq!(expected_execution_cost, tx_cost.execution_cost);
|
|
|
|
assert_eq!(2, tx_cost.writable_accounts.len());
|
|
|
|
}
|
|
|
|
|
2021-06-28 19:34:04 -07:00
|
|
|
#[test]
|
|
|
|
fn test_cost_model_calculate_cost_no_alloc() {
|
|
|
|
let (mint_keypair, start_hash) = test_setup();
|
|
|
|
let tx =
|
|
|
|
system_transaction::transfer(&mint_keypair, &Keypair::new().pubkey(), 2, start_hash);
|
|
|
|
|
|
|
|
let expected_account_cost = SIGNED_WRITABLE_ACCOUNT_ACCESS_COST
|
|
|
|
+ NON_SIGNED_WRITABLE_ACCOUNT_ACCESS_COST
|
|
|
|
+ NON_SIGNED_READONLY_ACCOUNT_ACCESS_COST;
|
|
|
|
let expected_execution_cost = 8;
|
|
|
|
|
|
|
|
let mut cost_model = CostModel::default();
|
|
|
|
cost_model
|
|
|
|
.upsert_instruction_cost(&system_program::id(), &expected_execution_cost)
|
|
|
|
.unwrap();
|
|
|
|
|
|
|
|
// allocate cost, set some random number
|
|
|
|
let mut tx_cost = TransactionCost::new_with_capacity(8);
|
|
|
|
tx_cost.execution_cost = 101;
|
|
|
|
tx_cost.writable_accounts.push(Pubkey::new_unique());
|
|
|
|
|
|
|
|
cost_model.calculate_cost_no_alloc(&tx, &mut tx_cost);
|
|
|
|
assert_eq!(expected_account_cost, tx_cost.account_access_cost);
|
|
|
|
assert_eq!(expected_execution_cost, tx_cost.execution_cost);
|
|
|
|
assert_eq!(2, tx_cost.writable_accounts.len());
|
|
|
|
}
|
|
|
|
|
2021-06-01 07:16:17 -07:00
|
|
|
#[test]
|
|
|
|
fn test_cost_model_update_instruction_cost() {
|
|
|
|
let key1 = Pubkey::new_unique();
|
|
|
|
let cost1 = 100;
|
|
|
|
let cost2 = 200;
|
|
|
|
let updated_cost = (cost1 + cost2) / 2;
|
|
|
|
|
|
|
|
let mut cost_model = CostModel::default();
|
|
|
|
|
|
|
|
// insert instruction cost to table
|
|
|
|
assert!(cost_model.upsert_instruction_cost(&key1, &cost1).is_ok());
|
|
|
|
assert_eq!(cost1, cost_model.find_instruction_cost(&key1));
|
|
|
|
|
|
|
|
// update instruction cost
|
|
|
|
assert!(cost_model.upsert_instruction_cost(&key1, &cost2).is_ok());
|
|
|
|
assert_eq!(updated_cost, cost_model.find_instruction_cost(&key1));
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_cost_model_can_be_shared_concurrently_as_immutable() {
|
|
|
|
let (mint_keypair, start_hash) = test_setup();
|
|
|
|
let number_threads = 10;
|
|
|
|
let expected_account_cost = SIGNED_WRITABLE_ACCOUNT_ACCESS_COST
|
|
|
|
+ NON_SIGNED_WRITABLE_ACCOUNT_ACCESS_COST
|
|
|
|
+ NON_SIGNED_READONLY_ACCOUNT_ACCESS_COST;
|
|
|
|
|
|
|
|
let cost_model = Arc::new(CostModel::default());
|
|
|
|
|
|
|
|
let thread_handlers: Vec<JoinHandle<()>> = (0..number_threads)
|
|
|
|
.map(|_| {
|
|
|
|
// each thread creates its own simple transaction
|
|
|
|
let simple_transaction = system_transaction::transfer(
|
|
|
|
&mint_keypair,
|
|
|
|
&Keypair::new().pubkey(),
|
|
|
|
2,
|
|
|
|
start_hash,
|
|
|
|
);
|
|
|
|
let cost_model = cost_model.clone();
|
|
|
|
thread::spawn(move || {
|
|
|
|
let tx_cost = cost_model.calculate_cost(&simple_transaction);
|
|
|
|
assert_eq!(2, tx_cost.writable_accounts.len());
|
|
|
|
assert_eq!(expected_account_cost, tx_cost.account_access_cost);
|
2021-06-09 15:10:59 -07:00
|
|
|
assert_eq!(
|
|
|
|
cost_model.instruction_execution_cost_table.get_mode(),
|
|
|
|
tx_cost.execution_cost
|
|
|
|
);
|
2021-06-01 07:16:17 -07:00
|
|
|
})
|
|
|
|
})
|
|
|
|
.collect();
|
|
|
|
|
|
|
|
for th in thread_handlers {
|
|
|
|
th.join().unwrap();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_cost_model_can_be_shared_concurrently_with_rwlock() {
|
|
|
|
let (mint_keypair, start_hash) = test_setup();
|
|
|
|
// construct a transaction with multiple random instructions
|
|
|
|
let key1 = solana_sdk::pubkey::new_rand();
|
|
|
|
let key2 = solana_sdk::pubkey::new_rand();
|
|
|
|
let prog1 = solana_sdk::pubkey::new_rand();
|
|
|
|
let prog2 = solana_sdk::pubkey::new_rand();
|
|
|
|
let instructions = vec![
|
|
|
|
CompiledInstruction::new(3, &(), vec![0, 1]),
|
|
|
|
CompiledInstruction::new(4, &(), vec![0, 2]),
|
|
|
|
];
|
|
|
|
let tx = Arc::new(Transaction::new_with_compiled_instructions(
|
|
|
|
&[&mint_keypair],
|
|
|
|
&[key1, key2],
|
|
|
|
start_hash,
|
|
|
|
vec![prog1, prog2],
|
|
|
|
instructions,
|
|
|
|
));
|
|
|
|
|
|
|
|
let number_threads = 10;
|
|
|
|
let expected_account_cost = SIGNED_WRITABLE_ACCOUNT_ACCESS_COST
|
|
|
|
+ NON_SIGNED_WRITABLE_ACCOUNT_ACCESS_COST * 2
|
|
|
|
+ NON_SIGNED_READONLY_ACCOUNT_ACCESS_COST * 2;
|
|
|
|
let cost1 = 100;
|
|
|
|
let cost2 = 200;
|
|
|
|
// execution cost can be either 2 * Default (before write) or cost1+cost2 (after write)
|
|
|
|
|
|
|
|
let cost_model: Arc<RwLock<CostModel>> = Arc::new(RwLock::new(CostModel::default()));
|
|
|
|
|
|
|
|
let thread_handlers: Vec<JoinHandle<()>> = (0..number_threads)
|
|
|
|
.map(|i| {
|
|
|
|
let cost_model = cost_model.clone();
|
|
|
|
let tx = tx.clone();
|
|
|
|
|
|
|
|
if i == 5 {
|
|
|
|
thread::spawn(move || {
|
|
|
|
let mut cost_model = cost_model.write().unwrap();
|
|
|
|
assert!(cost_model.upsert_instruction_cost(&prog1, &cost1).is_ok());
|
|
|
|
assert!(cost_model.upsert_instruction_cost(&prog2, &cost2).is_ok());
|
|
|
|
})
|
|
|
|
} else {
|
|
|
|
thread::spawn(move || {
|
|
|
|
let tx_cost = cost_model.read().unwrap().calculate_cost(&tx);
|
|
|
|
assert_eq!(3, tx_cost.writable_accounts.len());
|
|
|
|
assert_eq!(expected_account_cost, tx_cost.account_access_cost);
|
|
|
|
})
|
|
|
|
}
|
|
|
|
})
|
|
|
|
.collect();
|
|
|
|
|
|
|
|
for th in thread_handlers {
|
|
|
|
th.join().unwrap();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|