[Feature request] switch for the miner fee randomization in the config

[openoms]

from IRC:

Is there a way to switch off the miner fee randomization in the QT or at least in CLI?
I'd like to be able to sweep a UTXO to an LN channel cheap as possible. Currently need to leave around 1000 sats to be send a fixed amount even with 1 input - 1 output.

waxwing_
openoms, no you'd have to change it in the code i'm afraid
see jmclient.blockchaininterface.BitcoinCoreInterface.estimate_fee_per_kb
...
the argument for having it not configurable is 'protect people and don't load them cognitively', but the counterargument is perfectly reasonable. should be a trivial PR i think.

[chris-belcher]

How about making the randomization amount be configurable, in the same way that yield-generators parameters are (e.g. cjfee_factor, txfee_factor and size_factor) By default the value would be finite, but if the user wants to turn off the miner fee randomization they set it to zero.

[kristapsk]

I am for adding new setting for tx feerate randomization (tx_fees_factor?), should default to current behaviour (0.2).

[openoms]

yes, a tx_fees_factor option is exactly what is needed!