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Automatically merged updates to draft EIP(s) 2028 (#2211) 

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Tom Brand 2019-07-26 00:08:04 +03:00 committed by EIP Automerge Bot
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EIPS/eip-2028.md
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@ -10,7 +10,7 @@ created: 2019-05-03
---
## Simple Summary
We propose to reduce the gas cost of Calldata (`GTXDATANONZERO`) from its current value of 68 gas per byte to a lower cost, to be backed by mathematical modeling and empirical estimates. The mathematical model is the one used in the works of Sompolinsky and Zohar [1] and Pass, Seeman and Shelat [2], which relates network security to network delay. We shall (1) evaluate the theoretical impact of lower Calldata gas cost on network delay using this model, (2) validate the model empirically, and (3) base the proposed gas cost on our findings.
We propose to reduce the gas cost of Calldata (`GTXDATANONZERO`) from its current value of 68 gas per byte to 16 gas per byte, to be backed by mathematical modeling and empirical estimates. The mathematical model is the one used in the works of Sompolinsky and Zohar [1] and Pass, Seeman and Shelat [2], which relates network security to network delay. We shall (1) evaluate the theoretical impact of lower Calldata gas cost on network delay using this model, (2) validate the model empirically, and (3) base the proposed gas cost on our findings.
## Motivation
There are a couple of main benefits to accepting this proposal and lowering gas cost of Calldata
@ -22,7 +22,7 @@ On-Chain Scalability: Generally speaking, higher bandwidth of Calldata improves
* Stateless clients: The same model will be used to determine the price of the state access for the stateless client regime, which will be proposed in the State Rent (from version 4). There, it is expected that the gas cost of state accessing operation will increase roughly proportional to the extra bandwidth required to transmit the “block proofs” as well as extra processing required to verify those block proofs.
## Specification
The gas per non-zero byte is reduced from 68 to TBD. Gas cost of zero bytes is unchanged.
The gas per non-zero byte is reduced from 68 to 16. Gas cost of zero bytes is unchanged.
## Rationale
Roughly speaking, reducing the gas cost of Calldata leads to potentially larger blocks, which increases the network delay associated with data transmission over the network. This is only part of the full network delay, other factors are block processing time (and storage access, as part of it). Increasing network delay affects security by lowering the cost of attacking the network, because at any given point in time fewer nodes are updated on the latest state of the blockchain.