Date: Mon, 19 Oct 1998 10:11:35 -0400 (EDT) From: "John W. DeBoskey" <jwd@unx.sas.com> To: freebsd-current@FreeBSD.ORG Subject: Conflicting ping performance Message-ID: <199810191411.KAA21204@bb01f39.unx.sas.com>
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Hi, We're seeing some very interesting ping timings. Wall-clock vs. recorded ping statistics. In the statistics below, the -current system is recording ping statistics 1/2 the values of the march snap. However, the march snap completes in 0.05 seconds, while the -current system requires 10 seconds. A system running the 980825-SNAP gives the same strange results as the -current system. The network controllers should not have any effect since we are testing against localhost. (however, the two machines below are identical hardware configs using fxp0). This problem replicates when testing the actual network devices. Can anyone else replicate this problem? Comments, Critiques, or diffs to fix this are appreciated. Thanks, John ================================================================= From a -current system: (Sunday Oct 18, 20:35:40 EDT) # uname -a FreeBSD FreeBSD.pc.sas.com 3.0-CURRENT FreeBSD 3.0-CURRENT #0: Sun Oct 18 20:35:40 EDT 1998 root@FreeBSD.pc.sas.com:/usr/src/sys/compile/FreeBSD i386 # time ping -c 500 -f localhost PING localhost.sas.com (127.0.0.1): 56 data bytes . --- localhost.sas.com ping statistics --- 500 packets transmitted, 500 packets received, 0% packet loss round-trip min/avg/max/stddev = 0.033/0.038/0.258/0.015 ms 10.00s real 0.00s user 0.07s system # ================================================================= From a march snap: # uname -a FreeBSD magenta.pc.sas.com 3.0-980325-SNAP FreeBSD 3.0-980325-SNAP #1: Tue May 12 23:29:14 EST 1998 root@magenta.pc.sas.com:/usr/src/sys/compile/MAGENTA i386 # time ping -c 500 -f localhost PING localhost (127.0.0.1): 56 data bytes . --- localhost ping statistics --- 500 packets transmitted, 500 packets received, 0% packet loss round-trip min/avg/max/stddev = 0.080/0.082/0.186/0.005 ms 0.05s real 0.02s user 0.03s system # ================================================================= To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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