Update EIP-7783: Add stepwise linear strategy

Merged by EIP-Bot.

EIPS/eip-7783.md

@@ -35,7 +35,7 @@ The EIP proposes the introduction of a new gas limit management mechanism that a
 
 ## **Specification**
 
-There are different approaches to implement a controlled gas limit increase strategy. The following are two possible strategies that can be used:
+There are different approaches to implement a controlled gas limit increase strategy. The following are three possible strategies that can be used:
 
 ### **Linear Gas Limit Increase Strategy**
 
@@ -62,6 +62,35 @@ Where:
 If we set `blockNumStart` to the current block number, `initialGasLimit` to the current gas limit (`30_000_000`), `r` to 6, and `gasLimitCap` to `60_000_000`, the gas limit will increase by 6 gas per block for two years, reaching 30 million gas at the end of a $\approx$ 2 years period. 
 The result of `compute_gas_limit` will be the gas limit aimed by the proposer for the block `blockNum`. none of this is enforced at the protocol level, and the proposer needs to still follow protocol rules related to the gas limit.
 
+### **Stepwise Linear Gas Limit Increase Strategy**
+
+Add a new "Gas Limit" selection strategy that takes in Block Number `N` and spits out the Gas Limit `GL` for that block. The strategy is as follows:
+
+- The gas limit `GL_t` at block `t` is calculated as:
+
+```python
+def compute_gas_limit(blockNum: int, blockNumStart: int, r: int, step_blocks_interval: int, gasLimitCap: int) -> int:
+  if blockNum < blockNumStart:
+    return initialGasLimit
+  else:
+    return min(gasLimitCap, initialGasLimit + r * ((blockNum - blockNumStart) // step_blocks_interval))
+```
+
+Where:
+
+- `blockNum` is the block number for which the gas limit is being calculated.
+- `blockNumStart` is the block number at which the gas limit increase starts.
+- `initialGasLimit` is the initial gas limit at block `blockNumStart`.
+- `step_blocks_interval` is the number of blocks after which the gas limit increases (cooldown period).
+- `r` is the rate at which the gas limit increases per step.
+- `gasLimitCap` is the maximum gas limit that can be reached.
+
+This strategy has three main advantages:
+
+- It provides larger, more visible, and distinct metric changes over each step.
+- It allows for collection of more stabilized metrics over the length of the cooldown period.
+- It gives the community more time to evaluate the impact of the gas limit increase and act accordingly.
+
 ### **Exponential Gas Limit Increase Strategy**
 
 Add a new "Gas Limit" selection strategy that takes in Block Number `N` and spits out the Gas Limit `GL` for that block. The strategy is as follows: