How to view detailed process information on CentOS?

Question

linux

The problem is this. There are 2 VPS from different hosting providers. What about hosting providers. VPS data in different parts of Eurasia. Each VPS has a 32-bit (i686) CentOS distribution. VPS #1 is running Centos 6.5, VPS #2 is running Centos 6.6.
The same process is launched, with the same characteristics on both VPS. On VPS #1 it works fine, on VPS #2 something is wrong. This is what needs to be found out. I need to compare process details to understand why the same process on VPS #2 is not working correctly.
PS By process I mean a service running in top.

Answer 1

If the application starts up without errors on both servers, does not write anything strange to the logs and does not load the system half to death, but at the same time the non-game server is not visible in the client, then you need to look at the client settings: which IP / domains it polls, for which ports are knocked, whether these ports are open on servers, etc.
In general, strace gives the most detailed report on the body movements of the application, it tracks system calls.

Answer 2

What exactly is "wrong"?
You can help as strace and start the process with it.
So is perf top to see what the process is spending its time on.
But, all the same, it is not yet clear what specifically does not suit you in your process in order to set you in the right direction.