Originally Posted by unSpawn
As root run 'lsof -Pwlnp 5668' should show the files the process has open. The location of the binary and files it has opened may tell you more about its purpose. If you run a matured, efficient package manager it may allow you to find out easily if the binary at its current location is part of a (official) package. With RPM this would go something like 'rpm -qf /path/to/pvs'. If no details can be gathered from that you could run 'strings -an4 /path/to/pvs' as a last resort. Do post all output if you are unable to reach a conclusion one way or another.
I found out the process pvs was a part of monitoring tool installed on the server.
Killed the processes with kill -9 .(I know its not a good way to it without analyzing the root cause .Things could have been different if you have posted it little earlier
.Anyway I will keep this in mind for future trouble shooting. )
Now the system is behaving normally.