test: apply fixed feerate to avoid variable dynamic fees in wallet_groups.py #25990

pull stickies-v wants to merge 1 commits into bitcoin:master from stickies-v:test-walletgroups-fix-feerate changing 1 files +3 −2

stickies-v commented at 12:30 AM on September 3, 2022: contributor

Without specifying a feerate, we let the wallet decide on an appropriate feerate, which can be influenced by various factors such as what's in the mempool. Since wallet_groups.py fails when feerates are unstable, we should use a fixed feerate across all nodes. The assumed feerate was 20 sats/vbyte, so this PR adopts that.

Closes #25940. I'm not 100% sure, but I think the increased tx relay speed introduced by #25865 caused the transactions to more quickly and often enter the other nodes' mempools, affecting their feerate calculation done in wallet:GetMinimumFeeRate() and thus deviating slightly from the expected 20 sats/vbyte.

Ran wallet_groups.py over 400 times without failure.

test: apply fixed feerate to avoid variable dynamic fees

Without specifying a feerate, we let the wallet decide on an
appropriate feerate, which can be influenced by various factors
such as what's in the mempool. Since wallet_groups.py fails when
feerates are unstable, we should use a fixed feerate across all nodes.

Closes #25940

2186608172

DrahtBot added the label Tests on Sep 3, 2022
MarcoFalke added this to the milestone 24.0 on Sep 5, 2022
glozow commented at 4:20 PM on September 8, 2022: member

Approach ACK 2186608172b0e6c3a9907e06fed27dfd927abd45

Based on tx4_ungrouped_fee, etc, it looks like this test assumes the transactions will be constructed at 20sat/vB and thus it makes sense to use -paytxfee to make that always true.
aureleoules commented at 5:25 PM on September 8, 2022: member

ACK 2186608172b0e6c3a9907e06fed27dfd927abd45. Ran several times the test and seems to fix #25940.
MarcoFalke merged this on Sep 9, 2022
MarcoFalke closed this on Sep 9, 2022
stickies-v deleted the branch on Sep 9, 2022
sidhujag referenced this in commit 9bac3956f4 on Sep 11, 2022
bitcoin locked this on Sep 9, 2023

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#25865 test: speedup wallet tests by whitelisting peers (immediate tx relay)#25940 Intermittent failure in `wallet_groups.py`#25988 test: revert #25865 for wallet_groups.py (quick fix)