The default amount of time urlmon will wait on a connection is 3 minutes. Parallel URL monitoring urlmon can now monitor URLs in parallel by, on start up, forking off a certain number of copies of itself. Each copy will monitor a specific portion of all the URLs specified for monitoring. The number of copies to be made is specified by the '-F n' flag, where n will be the number of copies. The default value if no '-F' is given is to have one copy running.
Experimentation is needed to see what number of parallel copies is best.
The more copies, the faster the entire database will be processed. This avoids having to have tmp files, which was ugly and a potential security problem. It is brand new and there are likely some bugs in it, especially in the code that sends the modification data from the child processes to the parent. With SysV IPC off, urlmon will behave just as it used to, as described in the following paragraph. Each copy of the child monitoring process writes out a file with the results of the monitoring it did.