Re: Multicast
Sending from two single threaded freebsd iperfs to a linux receiver.
Freebsd boxes at NCSA. Receiver at iGrid.
farmer[5]: iperf -T127 -u -t 90 -c 233.2.200.10
------------------------------------------------------------
Client connecting to 233.2.200.10, UDP port 5001
Sending 1470 byte datagrams
Setting multicast TTL to 127
UDP buffer size: 9.0 KByte (default)
------------------------------------------------------------
[ 3] local 141.142.101.14 port 2303 connected with 233.2.200.10 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-90.0 sec 11.3 MBytes 1.0 Mbits/sec
[ 3] Sent 8026 datagrams
chaos[5]: iperf -T127 -u -t 90 -c 233.2.200.10
------------------------------------------------------------
Client connecting to 233.2.200.10, UDP port 5001
Sending 1470 byte datagrams
Setting multicast TTL to 127
UDP buffer size: 9.0 KByte (default)
------------------------------------------------------------
[ 3] local 141.142.101.25 port 2985 connected with 233.2.200.10 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-90.0 sec 11.3 MBytes 1.0 Mbits/sec
[ 3] Sent 8026 datagrams
[root --at-- madhatter iperf-1.6.2]# ./iperf -s -u -B233.2.200.10
about to getaddrinfo on '233.2.200.10'
done with gai, ai_fam=2 ai_alen=16 addr=0x00000002...
------------------------------------------------------------
Server listening on UDP port 5001
Binding to local address 233.2.200.10
Joining multicast group 233.2.200.10
Receiving 1470 byte datagrams
UDP buffer size: 64.0 KByte (default)
------------------------------------------------------------
about to getaddrinfo on '233.2.200.10'
done with gai, ai_fam=2 ai_alen=16 addr=0x00000002...
[ 3] local 233.2.200.10 port 5001 connected with 141.142.101.25 port 2985
[ 6] local 233.2.200.10 port 5001 connected with 141.142.101.14 port 2303
about to getaddrinfo on '233.2.200.10'
done with gai, ai_fam=2 ai_alen=16 addr=0x00000002...
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 0.0-90.0 sec 11.3 MBytes 1.0 Mbits/sec 0.067 ms 0/ 8026 (0%)
[ 6] 0.0-90.0 sec 11.3 MBytes 1.0 Mbits/sec 0.071 ms 0/ 8026 (0%)
On Tue, Sep 24, 2002 at 04:06:57PM -0400, Matthew J Zekauskas wrote:
> Coincidentally, Someone from the Abilene NOC tried this
> out last week on FreeBSD 4.6-STABLE (iperf single threaded)
> and had problems. I believe he's had it working on an older
> FreeBSD release, but I'd have to check.
>
> I'd also be interested in reports of a working setup...
>
> --Matt
>
> --On Tuesday, September 24, 2002 3:02 PM -0500 Kevin Gibbs
> <kgibbs --at-- ncsa.uiuc.edu> wrote:
>
> >I am attempting to do some testing on iperf multicast support. I was
> >wondering if anyone has a working setup, or is familiar with the
> >multicast support of iperf. Basically the problem is that in a
> >multithread version the server creates a new thread for each incoming
> >packet, and if it is a single threaded version it identifies the
> >connection but never handles the FIN messsage and consequently never
> >displays the bandwidth, jitter, etc. information.
> >
> >Thanks,
> >Kevin
> >
> >
>
--
Mitch Kutzko | mitch --at-- dast.nlanr.net | mitch --at-- ncsa.uiuc.edu | 217-333-1199
http://hobbes.ncsa.uiuc.edu/