rpcagentsrv.exe is a SANDRA.AGENT.SRV
belonging to SiSoftware Sandra XII//2008 SP2c
Non-system processes like rpcagentsrv.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.