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	The vm1_ prefix and vm2_ had had special meaning until820ad9cb1dand12068aa4e9. AFAIK there's no special meaning in vm3_ prefix. As they have confused people (like "In `benchmark` what is difference between `vm1_`, `vm2_` and `vm3_`"), I'd like to remove the obsoleted prefix as we obviated that two years ago.
		
			
				
	
	
		
			15 lines
		
	
	
	
		
			300 B
		
	
	
	
		
			YAML
		
	
	
	
	
	
			
		
		
	
	
			15 lines
		
	
	
	
		
			300 B
		
	
	
	
		
			YAML
		
	
	
	
	
	
prelude: |
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  long_lived = []
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  if RUBY_VERSION > "2.2.0"
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    3.times{ GC.start(full_mark: false, immediate_mark: true, immediate_sweep: true) }
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  elsif
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    GC.start
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  end
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  short_lived = ''
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benchmark:
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  vm_gc_wb_ary_promoted: |
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    long_lived[0] = short_lived # write barrier
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loop_count: 30000000
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