dummyapp: custom block time

[Wondertan]

Currently, Dummyapp provides a sleep parameter that freezes block production for the specified period. However, long sleep >10sec causes consensus timeouts leading to endless round restart preventing chain growth, while customizable block time is very helpful in testing block providing and retrievability.

[tac0turtle]

This can be done by using the values in the config.toml around timeouts for consensus rounds. Unfortunately, these are local configurations instead of network wide. Like most things in tendermint, we have an issue for this....

[liamsi]

https://github.com/lazyledger/lazyledger-core/blob/40acb17283ebfe1c49b804a786464b93c2213a97/config/toml.go#L362-L377

Also ref: #87

[liamsi]

@Wondertan I just confirmed that after editing ~/.tendermint/config/config.toml and modfying only the propose timeout to eg.:

timeout-propose = "12s"

 ./dummyapp run --dummy.sleep 10s --dummy.txs 10

works just fine:

I[2021-06-02|09:57:13.194] Executed block                               module=state height=1 validTxs=20 invalidTxs=0
I[2021-06-02|09:57:13.194] Committed state                              module=state height=1 txs=20 appHash=2800000000000000
I[2021-06-02|09:57:24.388] Executed block                               module=state height=2 validTxs=20 invalidTxs=0
I[2021-06-02|09:57:24.389] Committed state                              module=state height=2 txs=20 appHash=5000000000000000

Feel free to close the issue if this unblocks you. Otherwise, I think I need more details on how I can help.

[Wondertan]

Thanks! This should be enough for my goals