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DimaSamodurov/test_gc.rb

Created June 11, 2023 23:01
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measuring Ruby GC
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test_gc.rb
require 'benchmark'
def show_memory_consumption
puts `pmap #{Process.pid} | tail -n 1`
end
#GC.disable
result = Benchmark.measure do
200.times { |i|
"a"*100_000_000
#GC.start if i%20 == 0
}
end
puts result
show_memory_consumption
GC.start
show_memory_consumption
pp GC.stat
# Run once, notice execution time, memory consumption and count of GC calls.
# Uncomment lines 7 and 11, run again, notice differences.
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