cthombor@luke.d.umn.edu (Clark Thomborson) (12/23/89)
Problem: one I/O-bound process on one workstation can nearly saturate our fileserver. Two I/O-bound processes make life miserable. I don't know of any concept of "I/O priority" in either Unix or NFS that would limit the frequency of fileservice for such processes. Is there such a notion anywhere in the Unix world? Solution(?): I can imagine a new "limit" parameter, pagefault_frequency. A process with a pagefault_frequency of 5, for example, would get no more than 5 pagefault requests each second from its local Unix kernel...the sixth would be delayed until the next second. Can anyone think of a simple workaround that doesn't involve kernel hacking? I don't want to wait years for a solution.