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Separate the block processing time from the latency

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Luke Parker
2022-11-11 05:42:13 -05:00
parent 2411660bd8
commit fffb7a6914
7 changed files with 46 additions and 31 deletions
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25
substrate/tendermint/machine/src/lib.rs
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@@ -155,23 +155,22 @@ impl<N: Network + 'static> TendermintMachine<N> {
fn canonical_end_time(&self, round: Round) -> u64 {
let mut time = self.canonical_start_time;
for r in 0 .. u64::from(round.0 + 1) {
time += (r + 1) * u64::from(N::BLOCK_TIME);
time += (r + 1) * u64::from(N::block_time());
}
time
}
fn timeout(&self, step: Step) -> Instant {
let mut round_time = Duration::from_secs(N::BLOCK_TIME.into());
round_time *= self.round.0 + 1;
// TODO: Non-uniform timeouts. Proposal has to validate the block which will take much longer
// than any other step
let step_time = round_time / 3;
let offset = match step {
Step::Propose => step_time,
Step::Prevote => step_time * 2,
Step::Precommit => step_time * 3,
};
let adjusted_block = N::BLOCK_PROCESSING_TIME * (self.round.0 + 1);
let adjusted_latency = N::LATENCY_TIME * (self.round.0 + 1);
let offset = Duration::from_secs(
(match step {
Step::Propose => adjusted_block + adjusted_latency,
Step::Prevote => adjusted_block + (2 * adjusted_latency),
Step::Precommit => adjusted_block + (3 * adjusted_latency),
})
.into(),
);
self.start_time + offset
}
@@ -301,7 +300,7 @@ impl<N: Network + 'static> TendermintMachine<N> {
// Using the genesis time in place will cause this block to be created immediately
// after it, without the standard amount of separation (so their times will be
// equivalent or minimally offset)
// For callers wishing to avoid this, they should pass (0, GENESIS + BLOCK_TIME)
// For callers wishing to avoid this, they should pass (0, GENESIS + N::block_time())
start_time: last_time,
personal_proposal: proposal,