return Could not send transaction txpool is full with lots of txs

[georgehao]

The geth will return replacement transaction underpriced after there lots of txs add in. However reth will return Could not send transaction txpool is full after the pending txs reach txpool.pending-max-count. (geth seems don't have a limit for the max pending txs, of course we can set a large value to reth txpool.pending-max-count )

Q: if geth doesn't have a limit as otherwise this could be a dos vector right?
A: geth have a limitation for each address. don't have a limitation for all pending txs