Switch some frequently called call_laters to call_at (#93659)

* Switch some frequently called call_laters to call_at

call_at is a bit faster than call_later since call_later
is a wrapper around call_at.

We call at lot of these at startup so it helps a bit when
we are resource constrained

* update test

* update test

homeassistant/helpers/entity.py

@@ -770,8 +770,8 @@ class Entity(ABC):
             await self.parallel_updates.acquire()
 
         if warning:
-            update_warn = hass.loop.call_later(
-                SLOW_UPDATE_WARNING, self._async_slow_update_warning
+            update_warn = hass.loop.call_at(
+                hass.loop.time() + SLOW_UPDATE_WARNING, self._async_slow_update_warning
             )
 
         try:

homeassistant/helpers/entity_platform.py

@@ -288,8 +288,8 @@ class EntityPlatform:
             )
 
         logger.info("Setting up %s", full_name)
-        warn_task = hass.loop.call_later(
-            SLOW_SETUP_WARNING,
+        warn_task = hass.loop.call_at(
+            hass.loop.time() + SLOW_SETUP_WARNING,
             logger.warning,
             "Setup of %s platform %s is taking over %s seconds.",
             self.domain,

tests/helpers/test_entity_platform.py

@@ -223,16 +223,18 @@ async def test_platform_warn_slow_setup(hass: HomeAssistant) -> None:
 
     component = EntityComponent(_LOGGER, DOMAIN, hass)
 
-    with patch.object(hass.loop, "call_later") as mock_call:
+    with patch.object(hass.loop, "call_at") as mock_call:
         await component.async_setup({DOMAIN: {"platform": "platform"}})
         await hass.async_block_till_done()
         assert mock_call.called
 
-        # mock_calls[0] is the warning message for component setup
-        # mock_calls[4] is the warning message for platform setup
-        timeout, logger_method = mock_call.mock_calls[4][1][:2]
+        # mock_calls[3] is the warning message for component setup
+        # mock_calls[10] is the warning message for platform setup
+        timeout, logger_method = mock_call.mock_calls[10][1][:2]
 
-        assert timeout == entity_platform.SLOW_SETUP_WARNING
+        assert timeout - hass.loop.time() == pytest.approx(
+            entity_platform.SLOW_SETUP_WARNING, 0.5
+        )
         assert logger_method == _LOGGER.warning
 
         assert mock_call().cancel.called