We have a problem with the rpcss service running on Windows Server 2003 (Domain Controller).
After 49-50 hours of server uptime (seems to vary a little but last time was 49 hours 58 minutes) the process SVChost.exe running the rpcss service hangs and consumes ~50% of CPU runtime (ie. all the runtime for one of the 2 CPUs).
Network access to server, internet access (via proxy on server), and all Active Directory funtions cease (all require Remote Procedure Calls), and a reboot is necessary to fix the problem. The same problem occurs 49-50 hours later (this has occured 7 times so far as of this posting).
I have looked into the Event Viewer for the server and the following error is generated in system events:
"The server was unable to allocate from the system nonpaged pool because the pool was empty."
I have scanned the system files on the server with latest Symantec Antivirus definitions and found nothing. I cannot find any obvious updates (specifically to the Server OS) that occurred up to 50 hours prior to the first fault. We have not made any hardware changes in the past month.
The server is installed behind a firewall.
Has anyone experienced something similar or can offer any ideas?
Thanks in advance for any advice/thoughts on the matter!
OS: Microsoft Windows Server 2003 R2 Standard Edition (with all current updates) running as Domain Controller
CPU: 2 x Intel(R) Xeon(TM) CPU 2.40GHz
MB: Intel Corporation SE7505VB2 Board
Network Adapter: Intel 8255x-based PCI Ethernet Adapter (10/100)
Firewall: Sonicwall TZ 170 Standard
Anti-virus: Symantec Antivirus Corporate Edition 8.0 client (ver 8.00.9374)