Module block_cost_limits

defines block cost related limits

Constants

COMPUTE_UNIT_TO_US_RATIO

Cluster averaged compute unit to micro-sec conversion rate

ED25519_VERIFY_COST

Number of compute units for one ed25519 signature verification.

ED25519_VERIFY_STRICT_COST

Number of compute units for one ed25519 strict signature verification.

INSTRUCTION_DATA_BYTES_COST

Number of data bytes per compute units

MAX_BLOCK_ACCOUNTS_DATA_SIZE_DELTA

The maximum allowed size, in bytes, that accounts data can grow, per block. This can also be thought of as the maximum size of new allocations per block.

MAX_BLOCK_UNITS

Number of compute units that a block is allowed. A block’s compute units are accumulated by Transactions added to it; A transaction’s compute units are calculated by cost_model, based on transaction’s signatures, write locks, data size and built-in and SBF instructions.

MAX_BLOCK_UNITS_SIMD_0207

MAX_VOTE_UNITS

Number of compute units that a block can have for vote transactions, set to less than MAX_BLOCK_UNITS to leave room for non-vote transactions

MAX_WRITABLE_ACCOUNT_UNITS

Number of compute units that a writable account in a block is allowed. The limit is to prevent too many transactions write to same account, therefore reduce block’s parallelism.

SECP256K1_VERIFY_COST

Number of compute units for one secp256k1 signature verification.

SECP256R1_VERIFY_COST

Number of compute units for one secp256r1 signature verification.

SIGNATURE_COST

Number of compute units for one signature verification.

WRITE_LOCK_UNITS

Number of compute units for one write lock

Functions

simd_0207_block_limits

Return the block limits that will be used upon activation of SIMD-0207. Returns as (account_limit, block_limit, vote_limit)