flowchart for debugging a slow/unresponsive server

Posted by davidosomething on Server Fault See other posts from Server Fault or by davidosomething
Published on 2010-03-02T22:10:11Z Indexed on 2010/03/16 19:51 UTC
Read the original article Hit count: 359

Filed under:

server

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debugging

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networking

So the server is slow:

Roll back to the previous known working build - Success? Code problem - Fail? Go on.

Ping ip address - Success? maybe a DNS problem, go on. - Fail? Server or connection problem, go on.

Ping and tracert your domain.com from inside your network - previous success - fail: DNS problem - success? go on. - previous fail and: - Fail? Go on, could be you or network. - Success? Go on.

Try it from outside your network (http://centralops.net/co/) - Fail? The server's network connection sucks. - Success? If inside network was fail, your network sucks.

Check the server load: CPU/RAM usage. Is it overloaded? - Yes. Who's the culprit? Kill some processes/reboot. - No? Go on.

what other steps should i add?

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