Date: Thu, 22 Nov 2012 09:44:20 +0100 From: Marc Peters <marc@mpeters.org> To: freebsd-net@freebsd.org Subject: Re: Low Bandwidth on intercontinental connections Message-ID: <50ADE5E4.9090708@mpeters.org> In-Reply-To: <50AD14F8.8050001@xip.at> References: <50ACF62C.8000408@mpeters.org> <CAOgwaMuUuJ2%2BmKqsFVp=DyVFkfm8Et%2Brnt2iEGDO8i1Kt_kDVA@mail.gmail.com> <50ad087d.1892cc0a.2cce.3bf2@mx.google.com> <50AD1012.7020209@mpeters.org> <50AD14F8.8050001@xip.at>
next in thread | previous in thread | raw e-mail | index | archive | help
On 11/21/2012 06:52 PM, Ingo Flaschberger wrote: > Am 21.11.2012 18:32, schrieb Marc Peters: >> Hi Ben, >> >> i don't think this is memory related, too. We used plain CLI scp ot ftp >> from base, both times. >> >> Here is the requested data: >> >> Linux ---> FreeBSD: >> >> root@linux:~# scp jdk-6u33-linux-x64.bin 172.16.3.10: >> Password: >> jdk-6u33-linux-x64.bin 89% 61MB 59.0KB/s >> >> FreeBSD ---> Linux: >> >> [root@freebsd ~]# scp test.tgz 172.16.4.50: >> Password: >> test.tgz 100% 59MB 1.1MB/s 00:55 >> [root@freebsd ~]# >> >> From BSD to Linux is not as fast as L <--> L. >> >> I don't think, this is network related in some sort. > > hm - sounds like a duplex problem? duplex is fine (as showed by ifconfig in the first post). The switches also show full duplex on a Gig link for this. > > *) whats the distance between Linux and FreeBSD box? some 10k kilometers. One of our DCs is in Germany, the other in the US. > *) check network counters: > linux: ifconfig > FreeBSD: netstat -nia > look for errors no errors and no collisions on any system > check switches between (or as far as possible) for full duplex, also > FreeBSD (ifconfig) the internal switches are working properly. > *) check and compare tcpdump for the FreeBSD hosts on the receiver side, it showed a lot of window size changes and from time to time a lot of duplicate ACKs. i will file a PR (as Adrian asked) and see to get a matching tcpdump and SIFTR output. > > Kind regards, > Ingo Flaschberger > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?50ADE5E4.9090708>