Monitoring Linux / Programs that reports program / warnings for linux.
I'm having some instability problems on my CentOS 5 64bit on an advanced DELL server (rack server) which has informix installed. SOmetimes but not ofthen, the server is working very slow... I checked the logs (system logs / informix logs) and there seems to be nothing wrong.
My question is: Is there a program that can monitor the server / reports more advanced details ? I mean, is there a program that can be installed on the CentOS server and reports me for example that on hour x on minute x the server had full speed lan or full cpu or full memory, or instability hdd, or something like that ?
When the server is working slow, the network seems to be ok, I copyed some big files from a server to another (samba) and the speed is ok.
One time, when the server was working slow, I tried to access it through ssh and the response was way too long, I was able to log in after one minute.
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