Date: Fri, 26 Mar 1999 16:30:03 -0800 (PST) From: David Gilbert <dgilbert@velocet.ca> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/10535: Very poor ethernet performance with tx driver Message-ID: <199903270030.QAA13322@freefall.freebsd.org>
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The following reply was made to PR kern/10535; it has been noted by GNATS. From: David Gilbert <dgilbert@velocet.ca> To: freebsd-gnats-submit@freebsd.org, peter.jeremy@alcatel.com.au, semen@iclub.nsu.ru, dfr@nlsystems.com, andreas@klemm.gtn.com Cc: Subject: Re: kern/10535: Very poor ethernet performance with tx driver Date: Fri, 26 Mar 1999 19:24:00 -0500 (EST) I have applied the patch given in kern/10535 and it does not fix the problem I describe in kern/10575. The systems seem to take somewhat longer to slow down accepting packets, but here is a typical ping between two machines on the same ethernet: [2:36:331]root@hadrian:/var/config> ping cutlass PING cutlass.velocet.net (198.96.118.68): 56 data bytes 64 bytes from 198.96.118.68: icmp_seq=0 ttl=255 time=139.866 ms 64 bytes from 198.96.118.68: icmp_seq=1 ttl=255 time=275.616 ms 64 bytes from 198.96.118.68: icmp_seq=2 ttl=255 time=151.380 ms 64 bytes from 198.96.118.68: icmp_seq=3 ttl=255 time=167.754 ms 64 bytes from 198.96.118.68: icmp_seq=4 ttl=255 time=405.595 ms 64 bytes from 198.96.118.68: icmp_seq=5 ttl=255 time=436.736 ms 64 bytes from 198.96.118.68: icmp_seq=6 ttl=255 time=166.235 ms 64 bytes from 198.96.118.68: icmp_seq=7 ttl=255 time=92.162 ms 64 bytes from 198.96.118.68: icmp_seq=8 ttl=255 time=369.009 ms 64 bytes from 198.96.118.68: icmp_seq=9 ttl=255 time=223.727 ms ^C --- cutlass.velocet.net ping statistics --- 10 packets transmitted, 10 packets received, 0% packet loss round-trip min/avg/max/stddev = 92.162/242.808/436.736/116.027 ms [2:37:332]root@hadrian:/var/config> ifconfig tx1 down; ifconfig tx1 up [2:38:333]root@hadrian:/var/config> ping cutlass PING cutlass.velocet.net (198.96.118.68): 56 data bytes 64 bytes from 198.96.118.68: icmp_seq=0 ttl=255 time=0.558 ms 64 bytes from 198.96.118.68: icmp_seq=1 ttl=255 time=0.770 ms 64 bytes from 198.96.118.68: icmp_seq=2 ttl=255 time=0.507 ms 64 bytes from 198.96.118.68: icmp_seq=3 ttl=255 time=0.520 ms 64 bytes from 198.96.118.68: icmp_seq=4 ttl=255 time=0.512 ms 64 bytes from 198.96.118.68: icmp_seq=5 ttl=255 time=0.520 ms 64 bytes from 198.96.118.68: icmp_seq=6 ttl=255 time=0.525 ms ^C --- cutlass.velocet.net ping statistics --- 7 packets transmitted, 7 packets received, 0% packet loss round-trip min/avg/max/stddev = 0.507/0.559/0.770/0.088 ms This gets progressively worse until the ping times approach 16 s. Dave. -- ============================================================================ |David Gilbert, Velocet Communications. | Two things can only be | |Mail: dgilbert@velocet.net | equal if and only if they | |http://www.velocet.net/~dgilbert | are precisely opposite. | =========================================================GLO================ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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