End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

GC.latest_compact_info

GC.latest_compact_info → {:considered=>{:T_CLASS=>11}, :moved=>{:T_CLASS=>11}}

# File tmp/rubies/ruby-3.1.3/gc.rb, line 223
def self.latest_compact_info
  Primitive.gc_compact_stats
end

Returns information about object moved in the most recent GC compaction.

The returned hash has two keys :considered and :moved. The hash for :considered lists the number of objects that were considered for movement by the compactor, and the :moved hash lists the number of objects that were actually moved. Some objects can’t be moved (maybe they were pinned) so these numbers can be used to calculate compaction efficiency.

See also .enable .latest_gc_info .disable .malloc_allocated_size also in 4.1 · 3.3 · 3.2 · 3.0

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