EIP1559 fee market is broken

[samsondav]

We have found during the course of testing our EIP-1559 implementation on Polygon that Polygon's implementation of EIP-1559 appears to be broken (on both testnet and mainnet).

See my comments in the discord channel:
https://discord.com/channels/635865020172861441/638326018637168661/945745290131025961

We rolled out EIP-1559 support recently there for our Chainlink nodes but they are performing poorly, and the numbers make no sense. For example, how on earth is it possible that the base fee is 16 wei (0.000000016 Gwei) because all blocks are half empty, yet the mempool consists of 250k+ mineable transactions (of which many are ours) causing us to spend 625000000 times the base gas as a priority fee to mine our transactions?

We had to switch back to legacy transactions on Polygon because the EIP-1559 transactions are simply not being included, and not functioning as we would expect.

Here is an example of a very low base fee, but during that time there were hundreds of thousands of mineable transactions queued:

https://polygonscan.com/tx/0xf9e67b840df1f2d7f392a2cc26b29ccd1b892b34aba52681916ee2b687a27bd0

[QEDK]

We have found during the course of testing our EIP-1559 implementation on Polygon that Polygon's implementation of EIP-1559 appears to be broken (on both testnet and mainnet).

See my comments in the discord channel: https://discord.com/channels/635865020172861441/638326018637168661/945745290131025961

We rolled out EIP-1559 support recently there for our Chainlink nodes but they are performing poorly, and the numbers make no sense. For example, how on earth is it possible that the base fee is 16 wei (0.000000016 Gwei) because all blocks are half empty, yet the mempool consists of 250k+ mineable transactions (of which many are ours) causing us to spend 625000000 times the base gas as a priority fee to mine our transactions?

We had to switch back to legacy transactions on Polygon because the EIP-1559 transactions are simply not being included, and not functioning as we would expect.

Here is an example of a very low base fee, but during that time there were hundreds of thousands of mineable transactions queued:

https://polygonscan.com/tx/0xf9e67b840df1f2d7f392a2cc26b29ccd1b892b34aba52681916ee2b687a27bd0

You also need to provide 30+ gwei priority fees for validator nodes to mine them, I suspect the vast majority of pending txs do not meet that requirement, making them unmineable. Secondly, none of that has any bearing on the EIP-1559 fee market since that only involves network usage (or gas used/gas limit % per block) and base fee - essentially making a separate fee market for priority fee, currently users are competing with other txs by increasing the priority fee, which is normal, since base fee is a much bigger picture fee market and as utilization increases, it will automatically adjust to demand. Thirdly, the reason base fee is low is because enforcing miner tip is reducing spam txs significantly and reducing network utilization, so this is a normal consequence.

[samsondav]

You also need to provide 30+ gwei priority fees for validator nodes to mine them

This is surprising. Is it likely to change in future? We can't rely on setting this default if it's likely to change and prevent our transactions from being included.