[计] mean instruction execution rate

píng jūn zhǐ lìng zhí xíng sù lǜ ㄆㄧㄥˊ ㄐㄩㄣ ㄓˇ ㄌㄧㄥˋ ㄓˊ ㄒㄧㄥˊ ㄙㄨˋ lv4