smartcontractkit · dhaidashenko · Apr 9, 2024 · Apr 10, 2024 · Apr 22, 2024 · Apr 16, 2024
diff --git a/.changeset/afraid-baboons-nail.md b/.changeset/afraid-baboons-nail.md
diff --git a/.changeset/brave-games-drop.md b/.changeset/brave-games-drop.md
diff --git a/.changeset/breezy-taxis-breathe.md b/.changeset/breezy-taxis-breathe.md
diff --git a/.changeset/chilled-buses-reflect.md b/.changeset/chilled-buses-reflect.md
diff --git a/.changeset/chilly-garlics-kneel.md b/.changeset/chilly-garlics-kneel.md
diff --git a/.changeset/cool-apricots-compare.md b/.changeset/cool-apricots-compare.md
diff --git a/.changeset/dirty-weeks-shave.md b/.changeset/dirty-weeks-shave.md
diff --git a/.changeset/dull-pugs-wonder.md b/.changeset/dull-pugs-wonder.md
diff --git a/.changeset/early-shoes-sit.md b/.changeset/early-shoes-sit.md
@@ -0,0 +1,10 @@
+---
+"chainlink": patch
+---
+
+Fixed CPU usage issues caused by inefficiencies in HeadTracker.
+
+HeadTracker's support of finality tags caused a drastic increase in the number of tracked blocks on the Arbitrum chain (from 50 to 12,000), which has led to a 30% increase in CPU usage. 
+
+The fix improves the data structure for tracking blocks and makes lookup more efficient. BenchmarkHeadTracker_Backfill shows 40x time reduction.
+#bugfix
diff --git a/.changeset/famous-pets-confess.md b/.changeset/famous-pets-confess.md
diff --git a/.changeset/few-swans-wonder.md b/.changeset/few-swans-wonder.md
diff --git a/.changeset/fresh-oranges-brake.md b/.changeset/fresh-oranges-brake.md
diff --git a/.changeset/fresh-spies-melt.md b/.changeset/fresh-spies-melt.md
diff --git a/.changeset/friendly-adults-pull.md b/.changeset/friendly-adults-pull.md
diff --git a/.changeset/friendly-coats-switch.md b/.changeset/friendly-coats-switch.md
diff --git a/.changeset/funny-poets-sneeze.md b/.changeset/funny-poets-sneeze.md
diff --git a/.changeset/gentle-cups-carry.md b/.changeset/gentle-cups-carry.md
diff --git a/.changeset/giant-hotels-sparkle.md b/.changeset/giant-hotels-sparkle.md
diff --git a/.changeset/gold-rats-hide.md b/.changeset/gold-rats-hide.md
diff --git a/.changeset/good-rabbits-beg.md b/.changeset/good-rabbits-beg.md
diff --git a/.changeset/gorgeous-crabs-repeat.md b/.changeset/gorgeous-crabs-repeat.md
diff --git a/.changeset/healthy-toes-destroy.md b/.changeset/healthy-toes-destroy.md
diff --git a/.changeset/hot-pets-sneeze.md b/.changeset/hot-pets-sneeze.md
diff --git a/.changeset/hungry-cats-scream.md b/.changeset/hungry-cats-scream.md
diff --git a/.changeset/hungry-impalas-jog.md b/.changeset/hungry-impalas-jog.md
diff --git a/.changeset/hungry-seas-attend.md b/.changeset/hungry-seas-attend.md
diff --git a/.changeset/kind-crabs-begin.md b/.changeset/kind-crabs-begin.md
diff --git a/.changeset/large-flowers-agree.md b/.changeset/large-flowers-agree.md
diff --git a/.changeset/large-games-applaud.md b/.changeset/large-games-applaud.md
diff --git a/.changeset/large-oranges-warn.md b/.changeset/large-oranges-warn.md
diff --git a/.changeset/lazy-cooks-agree.md b/.changeset/lazy-cooks-agree.md
diff --git a/.changeset/lemon-balloons-pretend.md b/.changeset/lemon-balloons-pretend.md
diff --git a/.changeset/lemon-ladybugs-doubt.md b/.changeset/lemon-ladybugs-doubt.md
diff --git a/.changeset/little-hats-worry.md b/.changeset/little-hats-worry.md
diff --git a/.changeset/little-plums-grow.md b/.changeset/little-plums-grow.md
diff --git a/.changeset/mighty-timers-travel.md b/.changeset/mighty-timers-travel.md
diff --git a/.changeset/modern-candles-begin.md b/.changeset/modern-candles-begin.md
diff --git a/.changeset/moody-ligers-walk.md b/.changeset/moody-ligers-walk.md
diff --git a/.changeset/nasty-humans-promise.md b/.changeset/nasty-humans-promise.md
diff --git a/.changeset/nasty-penguins-smash.md b/.changeset/nasty-penguins-smash.md
diff --git a/.changeset/new-cheetahs-sell.md b/.changeset/new-cheetahs-sell.md
diff --git a/.changeset/odd-mugs-divide.md b/.changeset/odd-mugs-divide.md
diff --git a/.changeset/odd-mugs-end.md b/.changeset/odd-mugs-end.md
diff --git a/.changeset/pink-ducks-agree.md b/.changeset/pink-ducks-agree.md
diff --git a/.changeset/polite-jeans-knock.md b/.changeset/polite-jeans-knock.md
diff --git a/.changeset/poor-melons-vanish.md b/.changeset/poor-melons-vanish.md
diff --git a/.changeset/popular-buckets-hang.md b/.changeset/popular-buckets-hang.md
diff --git a/.changeset/pretty-experts-unite.md b/.changeset/pretty-experts-unite.md
diff --git a/.changeset/pretty-fishes-jam.md b/.changeset/pretty-fishes-jam.md
diff --git a/.changeset/quick-berries-sin.md b/.changeset/quick-berries-sin.md
diff --git a/.changeset/rude-beds-change.md b/.changeset/rude-beds-change.md
diff --git a/.changeset/rude-falcons-beg.md b/.changeset/rude-falcons-beg.md
diff --git a/.changeset/rude-paws-cross.md b/.changeset/rude-paws-cross.md
diff --git a/.changeset/selfish-timers-matter.md b/.changeset/selfish-timers-matter.md
diff --git a/.changeset/shaggy-pots-pretend.md b/.changeset/shaggy-pots-pretend.md
diff --git a/.changeset/shiny-forks-clap.md b/.changeset/shiny-forks-clap.md
diff --git a/.changeset/shy-jobs-speak.md b/.changeset/shy-jobs-speak.md
diff --git a/.changeset/silent-pets-sip.md b/.changeset/silent-pets-sip.md
diff --git a/.changeset/silly-weeks-serve.md b/.changeset/silly-weeks-serve.md
diff --git a/.changeset/silver-months-glow.md b/.changeset/silver-months-glow.md