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64 lines
2.2 KiB
Markdown
64 lines
2.2 KiB
Markdown
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---
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eip: 2780
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title: Reduce intrinsic transaction gas
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author: Matt Garnett (@lightclient)>
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discussions-to: https://ethereum-magicians.org/t/eip-2780-reduce-intrinsic-cost-of-transactions/4413
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status: Draft
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type: Standards Track
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category: Core
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created: 2020-07-11
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---
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## Abstract
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Reduce the intrinsic cost of a transaction to `16,360` gas.
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## Motivation
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The current `21,000` gas intrinsic cost of a transaction does not accurately
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represent the true cost of the transaction.
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## Specification
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After `block.number >= FORK_BLOCK`, enforce an intrinsic gas cost of `16,360`.
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## Rationale
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The EVM-equivalent of transaction validation would consist mostly of ~110 bytes
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of data and 2 x `SLOAD (0x54)`, 2 x `SSTORE (0x55)`, and an `ECRECOVER`. This
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translates to `(16 * 110) + 2 * 800 + 2 * 5,000 (assuming account is
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initialized) + 3000 = 16,360`. This implies that the current intrinsic cost of
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a transaction is overpriced by `4,640` gas. Since validation is implemented
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natively, it's possible that this is a conservative estimate.
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## Backwards Compatibility
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TBD
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## Test Cases
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TBD
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## Implementation
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TBD
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## Security Considerations
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#### Increased transactions-per-block
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Reducing the intrinsic gas of transaction will lead to an increase of
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transactions per block. This has several consequences:
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* Historically, periods of high transaction counts has correlated with
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higher-than-average uncle blocks being mined. It must be determined that the
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new intrinsic cost `16,360` will not adversely affect.
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* The state size of Ethereum continues to grow at an unsustainable pace.
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Increased the transaction throughput will exasperate this problem.
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#### Storage may be accessed more than once
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It is difficult to arrive at a fixed-cost for the intrinsic transaction fee,
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because it's possible for clients to need to revalidate a transaction in its
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mempool. This can be caused artificially by submitting a chain of transactions
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and bumping the gas price of the first transaction by minimal step sizes. Since
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the first transaction is now a "new" transaction, the transactions that follow
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sequentially will need to ensure the account's balance can still afford to
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transact.
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## Copyright
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Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).
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