From b25506b04508a118171db29daefe40a7b487f3b4 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Sun, 7 Sep 2025 16:10:55 -0500
Subject: [PATCH] [core] Skip redundant process_to_add() call when no scheduler
 items added (#10630)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 esphome/core/scheduler.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/esphome/core/scheduler.cpp b/esphome/core/scheduler.cpp
index a907b89b02..d0230d46fc 100644
--- a/esphome/core/scheduler.cpp
+++ b/esphome/core/scheduler.cpp
@@ -326,6 +326,9 @@ void HOT Scheduler::call(uint32_t now) {
   const auto now_64 = this->millis_64_(now);  // 'now' from parameter - fresh from Application::loop()
   this->process_to_add();
 
+  // Track if any items were added to to_add_ during this call (intervals or from callbacks)
+  bool has_added_items = false;
+
 #ifdef ESPHOME_DEBUG_SCHEDULER
   static uint64_t last_print = 0;
 
@@ -470,10 +473,14 @@ void HOT Scheduler::call(uint32_t now) {
         // since we have the lock held
         this->to_add_.push_back(std::move(item));
       }
+
+      has_added_items |= !this->to_add_.empty();
     }
   }
 
-  this->process_to_add();
+  if (has_added_items) {
+    this->process_to_add();
+  }
 }
 void HOT Scheduler::process_to_add() {
   LockGuard guard{this->lock_};