On Mon, Sep 22, 2008 at 03:04:33PM -0400, Perry E. Metzger wrote: > If a machine isn't sending out more than, say, 20,000 email > messages an hour, you won't notice the additional load Postfix puts on > a modern machine with any reasonable measurement tool.
Ah. So if I have 3,000 nodes, running an extremely tightly coupled app, and each one does postfix once per 30 seconds (that's 100/second), and each time one wakes up it causes the entire cluster to freeze for 1 quantum (1/250 of a second), how much work does the cluster get done? That's the point of one of the papers on this topic; with a high speed, low latency interconnect, you'd be amazed at the effects that you can see. -- greg _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
