Date: Thu, 14 Aug 1997 15:46:54 +0200 (CEST) From: balu@dva.in-berlin.de (Boris Staeblow) To: current@freebsd.org Subject: Very slow Ethernet-performance with de0 Message-ID: <m0wz0Eo-000K4tC@dva.in-berlin.de>
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I've big problems with performance on my local network. Both machines (P166/P200 MMX, 430 HX) running (very) current (as of Aug 13) - same DEC21041 based network cards. No special kernel-configs. host1: ------ de0: <Digital 21041 Ethernet> rev 0x11 int a irq 9 on pci0.10.0 de0: 21041 [10Mb/s] pass 1.1 de0: address 00:80:ad:1c:af:a8 de0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 inet 10.0.0.10 netmask 0xffffff00 broadcast 10.0.0.255 ether 00:80:ad:1c:af:a8 media: autoselect (10base2/BNC) status: active host2: ------ de0: <Digital 21041 Ethernet> rev 0x11 int a irq 11 on pci0.13.0 de0: 21041 [10Mb/s] pass 1.1 de0: address 00:80:ad:1c:ac:97 de0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 inet 10.0.0.11 netmask 0xffffff00 broadcast 10.0.0.255 ether 00:80:ad:1c:ac:97 media: autoselect (10base2/BNC) status: active benchmark on a NFS-mounted drive: % iozone 10 Writing the 10 Megabyte file, 'iozone.tmp'...16.531250 seconds Reading the file...55.671875 seconds IOZONE performance measurements: 634299 bytes/second for writing the file 188349 bytes/second for reading the file ftp-benchmark: ncftp>mget test.tgz Receiving file: test.tgz 100% 0 2576406 bytes. ETA: 0:00 test.tgz: 2576406 bytes received in 157.45 seconds, 15.98 K/s. ^^^^^^^^^ telnet: When i cat a large ascii-file in a telnet session the transfer stops sometimes for 1-2 secs. ping-test: % ping -c 100000 -f host2 PING host2 (10.0.0.11): 56 data bytes ..................... --- host2 ping statistics --- 100020 packets transmitted, 100000 packets received, 0% packet loss round-trip min/avg/max/stddev = 0.294/0.520/17.794/0.300 ms (seems to be OK) - cable + termination is 100% ok - Filetransfers with Windows 95 on both sides are perfecly fast. - There's no additional network load (tested with tcpdump) - This performance problem exist since serval months Can someone give me a hint? Anyone with similar problems? Boris -- balu@dva.in-berlin.de Boris Staeblow
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