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fix(telemetry-client): use appropriate histogram buckets for L1 gas prices#22512

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PhilWindle merged 2 commits into
merge-train/spartanfrom
alexg/a-755-audit-83-telemetry-histogram-buckets-poorly-chosen-for-l1
Apr 21, 2026
Merged

fix(telemetry-client): use appropriate histogram buckets for L1 gas prices#22512
PhilWindle merged 2 commits into
merge-train/spartanfrom
alexg/a-755-audit-83-telemetry-histogram-buckets-poorly-chosen-for-l1

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@alexghr

@alexghr alexghr commented Apr 13, 2026

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Summary

  • Fixes A-755: L1 gas price, gas consumption, and fee histograms were using OTel default buckets which don't match real-world distributions. Added View-based bucket configs for gwei (0.1–1000), gas (10k–30M), and eth (0.0001–10) unit histograms.
  • Also fixed a unit mismatch in l1_tx_metrics.ts where gas prices were recorded in wei but the metric definitions declared gwei as the unit. Now converts wei to gwei before recording.

Test plan

  • Verify metrics are emitted with correct bucket boundaries in Grafana after deployment
  • Existing telemetry and publisher tests should pass unchanged

🤖 Generated with Claude Code

alexghr and others added 2 commits April 15, 2026 15:11
…rice metrics (A-755)

Add View-based bucket configurations for gwei, gas, and eth unit
histograms so L1 gas price, gas consumption, and fee metrics get
meaningful bucket boundaries instead of OTel defaults.

Also fix l1_tx_metrics.ts to convert wei to gwei before recording,
matching the metric definitions' declared unit.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@alexghr alexghr force-pushed the alexg/a-755-audit-83-telemetry-histogram-buckets-poorly-chosen-for-l1 branch from 851de94 to 4440fc1 Compare April 15, 2026 15:12
@PhilWindle PhilWindle merged commit c82ace5 into merge-train/spartan Apr 21, 2026
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@PhilWindle PhilWindle deleted the alexg/a-755-audit-83-telemetry-histogram-buckets-poorly-chosen-for-l1 branch April 21, 2026 08:31
chrismarino pushed a commit to chrismarino/aztec-packages that referenced this pull request May 5, 2026
BEGIN_COMMIT_OVERRIDE
fix(kv-store): ensure LMDB cursor is closed on iteration abort (AztecProtocol#22509)
fix(telemetry-client): use appropriate histogram buckets for L1 gas
prices (AztecProtocol#22512)
fix(telemetry-client): log warning when BatchSpanProcessor drops spans
(AztecProtocol#22511)
fix(stdlib): wrap HA signer databaseUrl in SecretValue (AztecProtocol#22510)
fix(prover-client): don't mark in-progress epoch N jobs as stale when
epoch N+1 starts (AztecProtocol#22508)
chore: (A-730) graceful shutdown for services in node startup failure
path (AztecProtocol#22112)
fix(prover-client): reject stale job promises and count timeouts toward
retry limit (AztecProtocol#21842)
feat(archiver): validate historical L1 log availability at startup
(AztecProtocol#22644)
fix(archiver): do not query MessageSent events by blockhash (AztecProtocol#22641)
refactor(e2e): skip initial sequencer in p2p and epochs tests (AztecProtocol#22535)
fix: handle missing L1 finalized block on devnets (AztecProtocol#22663)
fix(world-state): treat historical block 0 queries as historical, not
latest (AztecProtocol#22679)
fix(sequencer): re-check parent checkpoint validity before pipelined L1
submission (AztecProtocol#22586)
fix(world-state): make block 0 a first-class historical block (AztecProtocol#22711)
chore: show all running versions (AztecProtocol#22376)
chore: fix prettier inside worktrees (AztecProtocol#22557)
feat: use optimized verifier for rollup (AztecProtocol#21840)
fix(kv-store): skip pool creation on ephemeral deleteDb to unstick
browser tests (AztecProtocol#22693)
chore: rm claude lockfile (AztecProtocol#22718)
fix(e2e): wait for first checkpoint in fee_asset_price_oracle_gossip
test (AztecProtocol#22719)
chore(prover-node): track estimated L1 fee when proof publishing is
disabled (AztecProtocol#22691)
fix(ci): rerun squashed PR check on base branch change (AztecProtocol#22713)
feat(archiver): decouple calldata from blob fetching in L1 synchronizer
(AztecProtocol#22716)
refactor(e2e): enable pipelining in e2e_epochs tests (AztecProtocol#22544)
feat(p2p): reject and evict txs with insufficient max fee per gas
(AztecProtocol#22118)
refactor(world-state): always index block 0 regardless of initial tree
size (AztecProtocol#22724)
fix(e2e): fix redistribution test (AztecProtocol#22729)
END_COMMIT_OVERRIDE
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2 participants