Rbkit::GC.stat

Here are the standardized keys of Rbkit::GC.stat and what they mean :

• count: Count of major and minor GCs so far
• minor_gc_count: Count of minor GCs
• major_gc_count: Count of major GCs
• heap_allocated_pages: Count of allocated pages (heap_eden_pages + heap_tomb_pages)
• heap_eden_pages: Count of pages which has atleast one live object
• heap_tomb_pages: Count of pages which don't have any object yet
• heap_allocatable_pages: Count of pages that will be allocated if Ruby runs out of heap
• heap_sorted_length: Count of total number of sorted pages (>= heap_allocated_pages + heap_allocatable_pages)
• heap_live_slots: Count of slots in all pages having live objects
• heap_free_slots: Count of free slots in all pages
• heap_final_slots: Count of zombie objects
• heap_swept_slots: Count of slots swept after last GC
• old_objects: Count of old generation objects
• old_objects_limit: Old generation object count after which GC is triggered
• total_allocated_objects: Number of created objects in the lifetime of the process
• total_freed_objects: Number of freed objects in the lifetime of the process
• malloc_increase_bytes: Malloc'ed bytes since last GC
• malloc_increase_bytes_limit: Minor GC is triggered when malloc_increase_bytes exceeds this value
• oldmalloc_increase_bytes: Malloc'ed bytes for old objects since last major GC
• oldmalloc_increase_bytes_limit: Major GC is triggered with oldmalloc_increase_bytes exceeds this value
• total_heap_size: heap_allocated_pages * max slots per page * size of one slot
• total_memsize: ObjectSpace.memsize_of_all