46 lines
1.2 KiB
Ruby
46 lines
1.2 KiB
Ruby
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# https://makandracards.com/makandra/950-speed-up-rspec-by-deferring-garbage-collection
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class DeferredGarbageCollection
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DEFERRED_GC_THRESHOLD = (ENV['DEFER_GC'] || 10.0).to_f #used to be 10.0
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@@last_gc_run = Time.now
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def self.start
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return if unsupported_enviroment
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GC.disable if DEFERRED_GC_THRESHOLD > 0
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end
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def self.memory_threshold
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@mem = %x(free 2>/dev/null).to_s.split(" ")
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return nil if @mem.empty?
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@mem[15].to_i / (@mem[7].to_i/100)
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end
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def self.reconsider
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return if unsupported_enviroment
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if (percent_used = self.memory_threshold)
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running_out_of_memory = percent_used > 90
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# just for info, as soon as we got some numbers remove it
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swap_percent_used = @mem[19].to_i / (@mem[18].to_i/100) rescue 0
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puts "percent memory used #{percent_used} (#{@mem[8]} of #{@mem[7]})"
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puts "percent swap used #{swap_percent_used} (#{@mem[19]} of #{@mem[18]})"
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else
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running_out_of_memory = false
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end
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if( (DEFERRED_GC_THRESHOLD > 0 && Time.now - @@last_gc_run >= DEFERRED_GC_THRESHOLD) || running_out_of_memory )
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GC.enable
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GC.start
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GC.disable
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@@last_gc_run = Time.now
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end
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end
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def self.unsupported_enviroment
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# ENV['TRAVIS']
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end
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end
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