Shulou(Shulou.com)06/02 Report--

When the server reports that the cpu is too high, you can use the following command to quickly export stack information to facilitate viewing specific problems.

1. Use the top command to locate the abnormal process. You can see that 3653 of the CPU and memory usage are very high.

At this point, you can execute ps-ef | grep java to view all the java processes, and find the process with the process number 12836 in the result, and then you can see which application occupies the process.

2. Use the top-H-p process number to view abnormal threads

3. Use the printf "% x\ n" thread number to convert the exception thread number to hexadecimal

# printf "% x\ n" thread number

4. Use the jstack process number | grep hexadecimal exception thread number-A30 to locate the exception code (the last-A30 is the number of log lines, or you can output it to a text file or use other numbers). You can see the location of the exception code.

You can show the error message to your R & D colleagues to see why.

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