On Mon, Jun 20, 2005 at 03:52:11PM -0400, William Jordan wrote: > When receiving UDP traffic on a slow host (no user level end to end > flow control), you can improve receive throughput by reducing the > number of outstanding receives. The CPU can be saturated receiving > packets which are overflowing the socket (being discarded), and the > user can be CPU starved (unable to empty the socket).
Hrm, I thought Linux's NAPI avoids this problem. Jamal gave an excellent talk on this issue a few years ago: http://lwn.net/2000/0928/a/fast-forwarding.php3 I was thinking of a HW config issue. But I want to hear what Michael has to say before tainting the waters with other issues. > This is not a real world situation, though. It's very real. That's what DoS attacks are about. It just not expected on a private network with trusted hosts. grant _______________________________________________ openib-general mailing list openib-general@openib.org http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general