Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sdd.hp.com!hplabs!pyramid!pyrhard2.pyramid.com!mahesh From: mahesh@pyrhard2.pyramid.com (Mahesh Jethanandani) Newsgroups: comp.protocols.tcp-ip Subject: Re: IP performance evaluation & spray Message-ID: <148994@pyramid.pyramid.com> Date: 20 Mar 91 21:14:37 GMT References: <9103111409.AA10491@hns.com> Sender: news@pyramid.pyramid.com Organization: Pyramid Technology Corporation, Mountain View Lines: 35 In article <9103111409.AA10491@hns.com> c_rstine@HNS.COM (Robert Stine) writes: > >I'm evaluating the network performance of a single-board computer that >runs ethernet and TCP/IP; the board has an 82596CA LAN controller. In >one of the tests, I use the program "spray", executed from a Sun SPARC >IPC, to see how well the board can handle high volume IP inputs. I have done similiar testing between our systems Ethernet board ( I am not sure what chip it uses) and MIPS 120 box. Here are the results. Actually these are some of the worst results, I have seen. Generally I would say anything less than 5% drop in case of RPC and anything less than 10% for spray with ICMP echo request is good enough. With spray the most important factor is the buffer you have on the Ethernet board to receive packets. Testing with RPC ... Sending 10000 packets 2457 packets (24.570%) dropped by orville Testing with ICMP echo request ... Sending 10000 packets 711 packets (7.110%) dropped by orville Testing with RPC ... Sending 20000 packets 4707 packets (23.535%) dropped by orville Testing with ICMP echo request ... Sending 20000 packets 14800 packets (74.000%) dropped by orville Testing with RPC ... Sending 30000 packets 17076 packets (56.920%) dropped by orville Testing with ICMP echo request ... Sending 30000 packets 22802 packets (76.007%) dropped by orville Testing with RPC ... Sending 40000 packets 21448 packets (53.620%) dropped by orville Testing with ICMP echo request ... Sending 40000 packets 44 packets (0.110%) dropped by orville mahesh