From falk at ISI.EDU Mon Oct 17 16:14:23 2005 From: falk at ISI.EDU (Aaron Falk) Date: Mon, 17 Oct 2005 16:14:23 -0700 Subject: [xcp] Updated XCP version: xcp-nodiv Message-ID: All- We have completed an update on the XCP end-system and router code resulting in a release of xcp-nodiv for FreeBSD-5.3. The most significant change is that the per-packet router calculations no longer include division. This change is important because performing line-rate divisions on production routers is undesirable. To facilitate this change we changed the Throughput header field to carry RTT/Throughput. This value may be thought of as an idealized inter-packet time, although we just call it 'X'. The tarball also includes a matching protocol specification, modified analysis tools, and scripts for exercising the algorithm. We continue to develop the algorithm. Current work addresses identifying and responding appropriately to non-XCP queues, sharing bottleneck capacity fairly with Reno-style flows, evaluating performance under a variety of environments (e.g., intermittent links) and traffic models (e.g., web mice), and a network processor implementation. The tarball, specification (submitted for publication as draft-falk-xcp-spec-01.txt), and mailing list information can be found at . --aaron