wall clock time

基本解釋

You have a pre-defined variable named total_time for the wall-clock time of the whole data collection.
有一個(gè)預(yù)定義的變量 total_time，它代表整個(gè)數(shù)據(jù)收集過(guò)程的時(shí)鍾時(shí)間。
A simple performance metric is wall clock time, or measuring the real-world delay between a request for a page and a finished rendering.
一個(gè)簡(jiǎn)單的性能指標(biāo)是掛鍾時(shí)間（wall clock time），或測(cè)量頁(yè)麪請(qǐng)求與完成呈現(xiàn)之間的實(shí)際延遲。
For some circumstances -- say, running the Web server, database, and browser locally on your own workstation -- wall clock time can be informative.
對(duì)於某些情況 —— 比如在您自己的工作站本地運(yùn)行的 Web 服務(wù)器、數(shù)據(jù)庫(kù)和瀏覽器 —— 掛鍾時(shí)間能夠提供信息。