Is the GasLimit should be a fixed value after London hardfork?

[Nanyan]

Hi, there

version: 1.10.6

According to the CalcGasLimit1559 function:

// CalcGasLimit1559 calculates the next block gas limit under 1559 rules.
func CalcGasLimit1559(parentGasLimit, desiredLimit uint64) uint64 {
	delta := parentGasLimit/params.GasLimitBoundDivisor - 1
	limit := parentGasLimit
	if desiredLimit < params.MinGasLimit {
		desiredLimit = params.MinGasLimit
	}
	// If we're outside our allowed gas range, we try to hone towards them
	if limit < desiredLimit {
		limit = parentGasLimit + delta
		if limit > desiredLimit {
			limit = desiredLimit
		}
		return limit
	}
	if limit > desiredLimit {
		limit = parentGasLimit - delta
		if limit < desiredLimit {
			limit = desiredLimit
		}
	}
	return limit
}

The returned limit should be eventually equal to desiredLimit, and then it will no longer change anymore.

So the block's GasLimit will be a fixed value once it hit the config.GasCeil :

header.GasLimit = core.CalcGasLimit1559(parentGasLimit, w.config.GasCeil)

Is that the purpose by design?

[rjl493456442]

This GasLimit can be adjusted by the miners via --miner.gaslimit. Miners can vote for bumping or decreasing the gaslimit by demand.

[Nanyan]

So if all miners use a same gasLimit, then it will be no any dynamic adjustment, no matter the network is busy or not.

Does it a really better choice then the old one with a range of [gasFloor, gasCeil] ?

[rjl493456442]

gasFloor is unnecessary complexity we think. I have a PR to remove the gasFloor flag. #23213

[rjl493456442]

Close it now. Feel free to reopen if you have any other thoughts.