update metrics

Author: CodePrometheus

docs/en/agent/meter-log-reporter.md

@@ -25,10 +25,7 @@ The agent automatically collects Ruby runtime metrics when `meter_reporter_activ
 - `instance_ruby_gc_time_total` - Total GC time in milliseconds (cumulative)
 - `instance_ruby_heap_usage_percent` - Heap memory usage percentage
 - `instance_ruby_heap_live_slots_count` - Number of live heap slots
-
-**Object System Metrics:**
-
-- `instance_ruby_total_allocated_objects` - Total allocated objects count
+- `instance_ruby_heap_available_slots_count` - Number of available heap slots
 
 **Thread Metrics:**
 

lib/skywalking/meter/runtime/ruby_runtime_data_source.rb

@@ -26,18 +26,18 @@ def initialize
           @cache_duration = 60
         end
 
-        # Total allocated objects
-        def total_allocated_objects_generator
+        # Heap live slots count - important for memory pressure
+        def heap_live_slots_count_generator
           stats = get_gc_stats
-          stats[:total_allocated_objects] || 0
+          stats[:heap_live_slots] || 0
         rescue
           0
         end
 
-        # Heap live slots count - important for memory pressure
-        def heap_live_slots_count_generator
+        # Heap available slots count - total capacity
+        def heap_available_slots_count_generator
           stats = get_gc_stats
-          stats[:heap_live_slots] || 0
+          stats[:heap_available_slots] || 0
         rescue
           0
         end