Hello, Yes, it's 1 now.
On Wed, Dec 31, 2008 at 6:49 PM, Václav Haisman <[email protected]> wrote: > Lin Jui-Nan Eric wrote, On 30.12.2008 21:06: >> Dear listers, >> >> We recently found our new FreeBSD server (located in some foreign >> region) has poor network performance. After doing some tcpdump and >> iperf testing, we found that out-of-order TCP packets are not inserted >> into queue. >> >> This is an 100Mbps line, and TSO is disabled. >> >> % uname -a >> FreeBSD bsd 7.1-RC2 FreeBSD 7.1-RC2 #2: Wed Dec 31 03:12:39 CST 2008 >> r...@bsd:/usr/obj/usr/src/sys/KERNEL amd64 >> >> % iperf -c 10.1.1.250 >> ------------------------------------------------------------ >> Client connecting to office, TCP port 5001 >> TCP window size: 3.07 MByte (default) >> ------------------------------------------------------------ >> [ 4] local 10.1.1.210 port 61488 connected with 10.1.1.250 port 5001 >> [ ID] Interval Transfer Bandwidth >> [ 4] 0.0-10.2 sec 5.74 MBytes 4.74 Mbits/sec >> >> 03:47:21.146397 IP 10.1.1.210.54919 > 10.1.1.250.5001: . >> 159305:160753(1448) ack 1 win 1040 <nop,nop,timestamp 555928950 >> 3216612488> >> 03:47:21.146409 IP 10.1.1.250.5001 > 10.1.1.210.54919: . ack 160753 >> win 12568 <nop,nop,timestamp 3216612488 555928950> >> 03:47:21.146473 IP 10.1.1.210.54919 > 10.1.1.250.5001: . >> 160753:162201(1448) ack 1 win 1040 <nop,nop,timestamp 555928950 >> 3216612488> >> 03:47:21.146485 IP 10.1.1.250.5001 > 10.1.1.210.54919: . ack 162201 >> win 12568 <nop,nop,timestamp 3216612489 555928950> >> 03:47:21.146972 IP 10.1.1.210.54919 > 10.1.1.250.5001: . >> 163649:165097(1448) ack 1 win 1040 <nop,nop,timestamp 555928950 >> 3216612488> >> 03:47:21.146983 IP 10.1.1.250.5001 > 10.1.1.210.54919: . ack 162201 >> win 12573 <nop,nop,timestamp 3216612489 555928950> >> 03:47:21.146985 IP 10.1.1.210.54919 > 10.1.1.250.5001: . >> 162201:163649(1448) ack 1 win 1040 <nop,nop,timestamp 555928950 >> 3216612488> >> 03:47:21.146996 IP 10.1.1.250.5001 > 10.1.1.210.54919: . ack 163649 >> win 12568 <nop,nop,timestamp 3216612489 555928950> >> 03:47:21.146998 IP 10.1.1.210.54919 > 10.1.1.250.5001: . >> 165097:166545(1448) ack 1 win 1040 <nop,nop,timestamp 555928950 >> 3216612488> >> 03:47:21.147006 IP 10.1.1.250.5001 > 10.1.1.210.54919: . ack 163649 >> win 12573 <nop,nop,timestamp 3216612489 555928950> >> 03:47:21.147009 IP 10.1.1.210.54919 > 10.1.1.250.5001: . >> 166545:167993(1448) ack 1 win 1040 <nop,nop,timestamp 555928950 >> 3216612488> >> 03:47:21.147017 IP 10.1.1.250.5001 > 10.1.1.210.54919: . ack 163649 >> win 12573 <nop,nop,timestamp 3216612489 555928950> >> 03:47:21.147019 IP 10.1.1.210.54919 > 10.1.1.250.5001: . >> 167993:169441(1448) ack 1 win 1040 <nop,nop,timestamp 555928950 >> 3216612488> >> >> * You can see "ack 163649" repeating, but the packet is transmitted >> before 163649:165097. >> >> % cat /etc/sysctl.conf >> # $FreeBSD: src/etc/sysctl.conf,v 1.8 2003/03/13 18:43:50 mux Exp $ >> # >> # This file is read when going to multi-user and its contents piped thru >> # ``sysctl'' to adjust kernel values. ``man 5 sysctl.conf'' for details. >> # >> >> # Uncomment this to prevent users from seeing information about processes >> that >> # are being run under another UID. >> #security.bsd.see_other_uids=0 >> debug.bootverbose=1 >> kern.ipc.somaxconn=8192 >> kern.maxfiles=65536 >> kern.maxfilesperproc=32768 >> kern.maxprocperuid=65536 >> net.inet.ip.fastforwarding=1 >> net.inet.tcp.delayed_ack=0 >> vm.pmap.shpgperproc=2000 >> kern.ipc.maxsockbuf=8388608 >> net.inet.tcp.sendspace=3217968 >> net.inet.tcp.recvspace=3217968 >> >> Is our configuration wrong? Or it is an known bug? I have searched >> stable & net list, but found no similar discussion. >> Thank you all in advance! > Do you have net.inet.tcp.sack.enable=1? > > -- > VH > _______________________________________________ > [email protected] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "[email protected]" > _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
