Hi Herbert,
I am a newbie to iperf, I tried to search in the archive, but not able to
find out the exact mail, further the archive is very big. Can you please
tell me the link where to see it or tell me the reason in mail.
Krishna
On Tue, Apr 26, 2011 at 10:38 PM, Marc Herbert <[email protected]>wrote:
> This has been discussed plenty of times, just search the mailing list
> archive.
>
> 2011/4/26 er krishna <[email protected]>:
> > Hi All,
> >
> > I am trying to use iperf on RHEL 6 and I am getting wrong result in UDP
> > case. My network max spped is 1gbp/s , but with 2.6.32 kernel it is
> giving
> > me 38 gbp/s. With 2.6.18 kernel I was getting ~800 mbp/s speed. Following
> > command has run for client:
> >
> > [root@pvm61ext3 iperf-2.0.5]# iperf -c 139.185.51.53 -u -b 300M
> > ------------------------------------------------------------
> > Client connecting to 139.185.51.53, UDP port 5001
> > Sending 1470 byte datagrams
> > UDP buffer size: 256 KByte (default)
> > ------------------------------------------------------------
> > [ 3] local 139.185.48.101 port 6574 connected with 139.185.51.53 port
> 5001
> > [ ID] Interval Transfer Bandwidth
> > [ 3] 0.0-10.0 sec 44.4 GBytes 38.1 Gbits/sec
> > [ 3] Sent 256383 datagrams
> > read failed: Connection refused
> > [ 3] WARNING: did not receive ack of last datagram after 2 tries.
> >
> >
> > Following command has run for server:
> >
> > [root@pvm61ocfs iperf-2.0.5]# iperf -s -w 128k
> >
> >
> > Can anybody please help me here to understand why it is happening. Is
> this a
> > kernel bug or iperf bug ?
> >
> >
> > Krishna
> >
> >
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> >
>
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management toolset available today. Delivers lowest initial
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