sim-rs: only generate EBs/Votes for useful pipelines

Author: SupernaviX

sim-rs/sim-cli/src/events.rs

@@ -452,9 +452,9 @@ impl EventMonitor {
                     Some(block_time - tx.generated)
                 })
                 .collect();
-            let ib_expiration_cutoff = last_timestamp - Duration::from_secs(self.maximum_ib_age);
+            let ib_expiration_cutoff = last_timestamp.checked_sub_duration(Duration::from_secs(self.maximum_ib_age)).unwrap_or_default();
             let expired_ibs = ibs.values().filter(|ib| ib.included_in_eb.is_none() && ib.generated < ib_expiration_cutoff).count();
-            let eb_expiration_cutoff = last_timestamp - Duration::from_secs(self.maximum_eb_age);
+            let eb_expiration_cutoff = last_timestamp.checked_sub_duration(Duration::from_secs(self.maximum_eb_age)).unwrap_or_default();
             let expired_ebs = ebs.values().filter(|eb| eb.included_in_eb.is_none() && eb.included_in_block.is_none() && eb.generated < eb_expiration_cutoff).count();
             let empty_ebs = ebs.values().filter(|eb| eb.is_empty()).count();
             let bundle_count = votes_per_bundle.len();

sim-rs/sim-core/src/sim/node.rs

@@ -587,9 +587,13 @@ impl Node {
     }
 
     fn generate_endorser_blocks(&mut self, slot: u64) {
+        let pipeline = self.slot_to_pipeline(slot) + 1;
+        if pipeline < 4 {
+            // The first pipeline with IBs in it is pipeline 4.
+            // Don't generate EBs before that pipeline, because they would just be empty.
+        }
         for next_p in vrf_probabilities(self.sim_config.eb_generation_probability) {
             if self.run_vrf(next_p).is_some() {
-                let pipeline = self.slot_to_pipeline(slot) + 1;
                 self.tracker.track_eb_lottery_won(EndorserBlockId {
                     slot,
                     pipeline,
@@ -619,6 +623,12 @@ impl Node {
     }
 
     fn schedule_endorser_block_votes(&mut self, slot: u64) {
+        let pipeline = self.slot_to_pipeline(slot);
+        if pipeline < 4 {
+            // The first pipeline with IBs in it is pipeline 4.
+            // Don't run the VT lottery before that pipeline, because there's nothing to vote on.
+            return;
+        }
         let vrf_wins = vrf_probabilities(self.sim_config.vote_probability)
             .filter_map(|f| self.run_vrf(f))
             .count();

ui/public/traces/100xsummary.jsonl.gz

@@ -1,3 +1,3 @@
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-size 14783528
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+size 14451878

ui/public/traces/10xsummary.jsonl.gz

@@ -1,3 +1,3 @@
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-oid sha256:8c73e766768276d9f707eeee0f2b60511c5f99acd0764461d84cd6238eca432f
-size 12670009
+oid sha256:4c4b0d8f1f18aee8a68467211be4e34cd519c65ef130b8977f25ee31993d5483
+size 12135481

ui/public/traces/1xsummary.jsonl.gz

@@ -1,3 +1,3 @@
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-oid sha256:f32692bef181c2c22d57a9f63c97651a1ac67fa5af6c579a72395dab08105e95
-size 8635280
+oid sha256:33b4bbb5760bcfa2d1e4726d81642cf48c8832cca0586d1e85b0d16aa6ec965b
+size 8351576