https://community.hpe.com/t5/operating-system-linux/netperf-udp-stream-close-to-100-packet-drops/m-p/4234891#M83639 Over in the origial, misplaced, post in the hpux forum I speculate that this is an issue with speed-mismatch between the sender at 1G and (something between the sender and) the reciever at 100BT. Thu, 17 Jul 2008 16:19:24 GMT rick jones 2008-07-17T16:19:24Z https://community.hpe.com/t5/operating-system-linux/netperf-udp-stream-close-to-100-packet-drops/m-p/4234890#M83638 Hi ,<BR />I am using netperf 2.4.4 on 2 linux boxes.<BR />TCP_STREAM tests shows a throughput of 93Mb/sec.<BR />Problem is with the UDP_STREAM, where the packet drop rate is close to 100% as shown below<BR /><BR />netperf -t UDP_STREAM -H <IP> -l 20 -- -s 128K -S 128K -m 32K -M 32K<BR /><BR />UDP UNIDIRECTIONAL SEND TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 16.138.181.45 (16.138.181.45) port 0 AF_INET : histogram : interval : demo<BR />Socket Message Elapsed Messages<BR />Size Size Time Okay Errors Throughput<BR />bytes bytes secs # # 10^6bits/sec<BR /><BR />262142 32768 20.00 72914 0 955.61<BR />262142 20.00 3 0.04<BR /><BR />Any clues for why this behavior?<BR />Thank you<BR />Mahesh</IP> Wed, 16 Jul 2008 11:40:29 GMT https://community.hpe.com/t5/operating-system-linux/netperf-udp-stream-close-to-100-packet-drops/m-p/4234890#M83638 Mahesh Acharya 2008-07-16T11:40:29Z https://community.hpe.com/t5/operating-system-linux/netperf-udp-stream-close-to-100-packet-drops/m-p/4234891#M83639 Over in the origial, misplaced, post in the hpux forum I speculate that this is an issue with speed-mismatch between the sender at 1G and (something between the sender and) the reciever at 100BT. Thu, 17 Jul 2008 16:19:24 GMT https://community.hpe.com/t5/operating-system-linux/netperf-udp-stream-close-to-100-packet-drops/m-p/4234891#M83639 rick jones 2008-07-17T16:19:24Z