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Reduce slot duration and consecutive leader slots (#4838)

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* change consecutive leader slots to 4

* reduce polling frequency for transaction signature confirmation

* adjust wait time for transaction signature confirmation

* fix nominal test

* fix flakiness in wallet pay test
This commit is contained in:
Pankaj Garg
2019-07-01 13:21:00 -07:00
committed by GitHub
parent c1953dca8f
commit 38b44f2496
4 changed files with 47 additions and 17 deletions
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16
sdk/src/timing.rs
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@ -6,14 +6,14 @@ use std::time::{SystemTime, UNIX_EPOCH};
// rate at any given time should be expected to drift
pub const DEFAULT_NUM_TICKS_PER_SECOND: u64 = 10;
// At 10 ticks/s, 8 ticks per slot implies that leader rotation and voting will happen
// every 800 ms. A fast voting cadence ensures faster finality and convergence
pub const DEFAULT_TICKS_PER_SLOT: u64 = 8;
// At 10 ticks/s, 4 ticks per slot implies that leader rotation and voting will happen
// every 400 ms. A fast voting cadence ensures faster finality and convergence
pub const DEFAULT_TICKS_PER_SLOT: u64 = 4;
// 1 Epoch = 800 * 4096 ms ~= 55 minutes
pub const DEFAULT_SLOTS_PER_EPOCH: u64 = 4096;
// 1 Epoch = 400 * 8192 ms ~= 55 minutes
pub const DEFAULT_SLOTS_PER_EPOCH: u64 = 8192;
pub const NUM_CONSECUTIVE_LEADER_SLOTS: u64 = 8;
pub const NUM_CONSECUTIVE_LEADER_SLOTS: u64 = 4;
/// The time window of recent block hash values that the bank will track the signatures
/// of over. Once the bank discards a block hash, it will reject any transactions that use
@ -32,11 +32,11 @@ pub const MAX_PROCESSING_AGE: usize = MAX_RECENT_BLOCKHASHES / 2;
/// This is maximum time consumed in forwarding a transaction from one node to next, before
/// it can be processed in the target node
#[cfg(feature = "cuda")]
pub const MAX_TRANSACTION_FORWARDING_DELAY: usize = 4;
pub const MAX_TRANSACTION_FORWARDING_DELAY: usize = 2;
/// More delay is expected if CUDA is not enabled (as signature verification takes longer)
#[cfg(not(feature = "cuda"))]
pub const MAX_TRANSACTION_FORWARDING_DELAY: usize = 12;
pub const MAX_TRANSACTION_FORWARDING_DELAY: usize = 6;
pub fn duration_as_ns(d: &Duration) -> u64 {
d.as_secs() * 1_000_000_000 + u64::from(d.subsec_nanos())