GC.stress=

(::Integer flag) -> ::Integer

(bool flag) -> bool

GC.stress = flag → flag

# File tmp/rubies/ruby-3.4.1/gc.rb, line 92
def self.stress=(flag)
  Primitive.gc_stress_set_m flag
end

Updates the GC stress mode.

When stress mode is enabled, the GC is invoked at every GC opportunity: all memory and object allocations.

Enabling stress mode will degrade performance; it is only for debugging.

The flag can be true, false, or an integer bitwise-ORed with the following flags:

Example

0x01:: no major GC
0x02:: no immediate sweep
0x04:: full mark after malloc/calloc/realloc

See also .stress .total_time .stat_heap #garbage_collect also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0