terminal tools and logs for debugging TCP issues

Posted by kellogs on Super User See other posts from Super User or by kellogs
Published on 2012-12-07T10:08:30Z Indexed on 2012/12/07 11:08 UTC
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Filed under:

linux

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terminal

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Troubleshooting

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tcp

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developer-tools

I have a server which I am testing for functionality (not load, not stress) with tsung. 50 users / second, 100 total users. Judging from tsung (tsung is the testing framework) graphs, there TCP connections (red line) drops to 0 while the commenced user sessions (green line) does not. Server logs show nothing to be gripping onto, so I am speculating some kind of TCP issue. Should this be the case ? Where would I look further on the server, any logs / tools to be looking at ? Only SSH available, no GUI.

enter image description here

> root@XMPP:~# cat /etc/lsb-release  
> DISTRIB_ID=Ubuntu
> DISTRIB_RELEASE=11.10 
> DISTRIB_CODENAME=oneiric
> DISTRIB_DESCRIPTION="Ubuntu 11.10"

Thank you

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