Date: Wed, 13 Apr 2011 08:13:40 +1200 From: Andrew Thompson <thompsa@FreeBSD.org> To: Denny Schierz <linuxmail@4lin.net> Cc: freebsd-stable <freebsd-stable@freebsd.org> Subject: =?iso-8859-1?q?Re=3A_Network_throughput=3A_Never_get_more_than_1?= =?iso-8859-1?q?12MB/s_=FCber_two_NICs?= Message-ID: <BANLkTim2fLT8Lukktd66L-G4wAqwJ27-8w@mail.gmail.com> In-Reply-To: <1302516039.3223.222.camel@pcdenny> References: <1302516039.3223.222.camel@pcdenny>
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On 11 April 2011 22:00, Denny Schierz <linuxmail@4lin.net> wrote: > hi, > > after testing severals loadbalancing (LACP) types with Cisco, we saw, > that we never get more than 112MB/s with two network cards and iperf. > > So, we tested without loadbalancing, 4 Clients (iperf -f M -c <ip>) and > two target IPs. Every IP has his own 1Gb/s network card. > On the end, two clients had a connection to IP 1 and the second two to > IP 2. > > First we used the two onboard NICs and then, one onboard and one > external NIC, but without success. We never get more then 112MB/s > > All are connected through a Cisco Catalyst WS-X4515. > > The mainboard is a Intel S3420GP. > > any suggestion? Are you doing LACP from the FreeBSD host? (ie. lagg(4) interface). The current hash just uses the mac and IP addresses (not tcp/udp ports) so you need to make sure your multiple streams have different mac/ip numbers in order to load balance over multiple links. Andrew
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