Often the OWSTIMER.EXE process will allocate significant amounts of memory . As more and more memory is allocated to OWSTIMER, less is available for other processes, most notably the Internet Information Server (IIS) web service (W3SVC). If IIS does not have sufficient memory, a serious performance penalty will result. The workaround for this memory leakage to stop and then start the OWSTIMER process. This can be accomplished using the built-in Services application (under Administrative Programs in the Start menu) or via the command line. (The command-line entry is “net stop WSSTimerV3“.) In a large farm deployment, the service will be running on many Web Front Ends ( WFE’s) so the workaround must be performed on all of them.