> I'd like to hear your opinions on the efficiency for the IPC mechanism > betweeen two processes. (from a kernel point of view) Have you read "Unix Network Programming, Volume 2, 2nd edition: IPC" by Richard Stevens? It has measurements for this kind of thing on two OS's, and you can run the tests yourself on your favorite OS; the code is probably at http://www.kohala.com - Dan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/