Cold Start Procedure

I see a lot of questions from users or administrators who have decided that they have a performance problem but don’t know where to start or what information to provide when they ask for help. I have seen email from people who just say “my system is slow” and give no additional information at all. I have also seen 10-megabyte email messages with 20 attachments containing days of vmstat, sar, and iostat reports, but with no indication of what application the machine is supposed to be running. In this section, I’ll lead you through the initial questions that need to be answered. This may be enough to get you on the right track to solving the problem yourself, and it will make it easier to ask for help effectively.

  1. What is ...

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