烙印这是黑我还是问了个高深问题?

http://www.mitbbs.com/article_t/JobHunting/32866829.html

发信人: ksrent (wfnc), 信区: JobHunting
标  题: 烙印这是黑我还是问了个高深问题?
发信站: BBS 未名空间站 (Wed Jan 14 20:32:02 2015, 美东)


烙印: if the production application hang, how do you find out what caused
the problem?
我: I will dump heap to ... (烙印打断: "suppose it's production, you can't
stop it.")
我: I check CPU, if CPU is busy... (烙印打断: "suppose CPU is not busy.")
我: I will check memory usage, if ...(烙印打断: "suppose not memory used up.
")
我: I will check if there is I/O blocking ...(烙印打断: "suppose not because
of I/O blocking.")
我: That's my way to analyze issue, I will rule out something to ...
(烙印打断 "ok, let's suppose it's I/O issue, but it's million line code
application, and could be thousands of part involves I/O, how do you solve
the problem?)
我: For this huge application, troubleshooting needs deep understanding of
the codes.
(烙印打断: suppose you know the code very well, and suppose you wrote the
code yourself.)
我沉默，烙印沉默，(我在想：他一定是想要一个明确的答案，也就是一句话一针见血
的回答，可我没有答案...陷入长考)

一分钟后
烙印: it's ok, let's move on to next question.

我现在也想不出答案，请高手指点
谢谢！