86 lines
3.9 KiB
Rust
86 lines
3.9 KiB
Rust
//! defines block cost related limits
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//!
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use {
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lazy_static::lazy_static,
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solana_sdk::{
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bpf_loader, bpf_loader_deprecated, bpf_loader_upgradeable, compute_budget, ed25519_program,
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feature, incinerator, native_loader, pubkey::Pubkey, secp256k1_program, system_program,
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},
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std::collections::HashMap,
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};
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/// Static configurations:
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///
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/// Number of microseconds replaying a block should take, 400 millisecond block times
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/// is currently publicly communicated on solana.com
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pub const MAX_BLOCK_REPLAY_TIME_US: u64 = 400_000;
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/// number of concurrent processes,
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pub const MAX_CONCURRENCY: u64 = 4;
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// Cluster data, method of collecting at https://github.com/solana-labs/solana/issues/19627
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// Dashboard: https://metrics.solana.com:8889/sources/0/dashboards/10?refresh=Paused&lower=now%28%29%20-%2012h
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/// Cluster averaged compute unit to micro-sec conversion rate
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pub const COMPUTE_UNIT_TO_US_RATIO: u64 = 30;
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/// Number of compute units for one signature verification.
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pub const SIGNATURE_COST: u64 = COMPUTE_UNIT_TO_US_RATIO * 24;
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/// Number of compute units for one write lock
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pub const WRITE_LOCK_UNITS: u64 = COMPUTE_UNIT_TO_US_RATIO * 10;
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/// Number of data bytes per compute units
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pub const INSTRUCTION_DATA_BYTES_COST: u64 = 140 /*bytes per us*/ / COMPUTE_UNIT_TO_US_RATIO;
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// Number of compute units for each built-in programs
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lazy_static! {
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/// Number of compute units for each built-in programs
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pub static ref BUILT_IN_INSTRUCTION_COSTS: HashMap<Pubkey, u64> = [
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(feature::id(), COMPUTE_UNIT_TO_US_RATIO * 2),
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(incinerator::id(), COMPUTE_UNIT_TO_US_RATIO * 2),
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(native_loader::id(), COMPUTE_UNIT_TO_US_RATIO * 2),
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(solana_sdk::stake::config::id(), COMPUTE_UNIT_TO_US_RATIO * 2),
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(solana_sdk::stake::program::id(), COMPUTE_UNIT_TO_US_RATIO * 25),
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(solana_config_program::id(), COMPUTE_UNIT_TO_US_RATIO * 15),
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(solana_vote_program::id(), COMPUTE_UNIT_TO_US_RATIO * 70),
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(secp256k1_program::id(), COMPUTE_UNIT_TO_US_RATIO * 24),
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(ed25519_program::id(), COMPUTE_UNIT_TO_US_RATIO * 24),
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(system_program::id(), COMPUTE_UNIT_TO_US_RATIO * 5),
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(compute_budget::id(), COMPUTE_UNIT_TO_US_RATIO * 5),
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(solana_address_lookup_table_program::id(), COMPUTE_UNIT_TO_US_RATIO * 25),
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(bpf_loader_upgradeable::id(), COMPUTE_UNIT_TO_US_RATIO * 79),
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(bpf_loader_deprecated::id(), COMPUTE_UNIT_TO_US_RATIO * 38),
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(bpf_loader::id(), COMPUTE_UNIT_TO_US_RATIO * 19),
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]
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.iter()
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.cloned()
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.collect();
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}
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/// Statically computed data:
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///
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/// Number of compute units that a block is allowed. A block's compute units are
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/// accumulated by Transactions added to it; A transaction's compute units are
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/// calculated by cost_model, based on transaction's signatures, write locks,
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/// data size and built-in and SBF instructions.
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pub const MAX_BLOCK_UNITS: u64 =
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MAX_BLOCK_REPLAY_TIME_US * COMPUTE_UNIT_TO_US_RATIO * MAX_CONCURRENCY;
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#[cfg(test)]
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static_assertions::const_assert_eq!(MAX_BLOCK_UNITS, 48_000_000);
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/// Number of compute units that a writable account in a block is allowed. The
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/// limit is to prevent too many transactions write to same account, therefore
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/// reduce block's parallelism.
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pub const MAX_WRITABLE_ACCOUNT_UNITS: u64 = MAX_BLOCK_REPLAY_TIME_US * COMPUTE_UNIT_TO_US_RATIO;
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#[cfg(test)]
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static_assertions::const_assert_eq!(MAX_WRITABLE_ACCOUNT_UNITS, 12_000_000);
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/// Number of compute units that a block can have for vote transactions,
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/// sets at ~75% of MAX_BLOCK_UNITS to leave room for non-vote transactions
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pub const MAX_VOTE_UNITS: u64 = (MAX_BLOCK_UNITS as f64 * 0.75_f64) as u64;
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#[cfg(test)]
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static_assertions::const_assert_eq!(MAX_VOTE_UNITS, 36_000_000);
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/// The maximum allowed size, in bytes, that accounts data can grow, per block.
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/// This can also be thought of as the maximum size of new allocations per block.
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pub const MAX_BLOCK_ACCOUNTS_DATA_SIZE_DELTA: u64 = 100_000_000;
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