This certainly is interesting. Thanks! Kris -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of George Magklaras Sent: Monday, June 02, 2008 3:53 AM To: General Red Hat Linux discussion list Subject: Re: Renicing and disk usage priority You can have a look at the manual page for the ionice. I believe you will get your answers there. In short, the simple 'nice' will take care of the CPU cycles, but that does not always mean an optimum IO performance, because that depends on the rest of the process workload and whether your system will try to be fair to the other processes based on the peculiarities of the processes you are running . ionice will let you fine-tune the IO requirements of your processes in a better way. The examples at the end of the manual page are indicative of what you can do. Best regards, GM Kristoffer Knigga wrote: > Hello, all, > > I have a server that's running a bunch of processes that I believe are disk bound. The server is an 8-way machine running at about 60% idle, and each process averages about 3% of one processor (they are all single threaded). > > Now, I have one of these processes that I need to have running at a higher priority when it comes to disk access. Does renicing a process effect its ability to fight for disk resources, or just processor? > > Thanks! > > Kris Knigga > -- -- George Magklaras Senior Computer Systems Engineer/UNIX Systems Administrator EMBnet Technical Management Board The Biotechnology Centre of Oslo, University of Oslo http://folk.uio.no/georgios -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
