don't update meter at each operation, we have a monitoring goroutine
don't update meter at each operation, we have a monitoring goroutine

raintank/metrictank,replay/metrictank,raintank/metrictank,raintank/raintank-metric,raintank/raintank-metric,replay/metrictank,raintank/metrictank,raintank/metrictank,replay/metrictank,replay/metrictank,raintank/raintank-metric