netperf

[Анна Будкина]

2014-01-28 Sebastian Sumpf <Sebastian.Sumpf at ...1...>

> On 01/28/2014 01:20 PM, Christian Helmuth wrote:
> > Sebastian,
> >
> > On Tue, Jan 28, 2014 at 01:07:19PM +0100, Sebastian Sumpf wrote:
> >> Thanks for your tests! But I don't like the 65 MBit/s thing! What is
> >> going on? Is this RX or TX?
> >
> > Complete netperf output follows
> >
> > ---------------------------- TCP_STREAM -----------------------
> > spawn netperf-2.6.0 -H 10.0.0.65 -P 1 -v 2 -t TCP_STREAM -c -C -- -m 1024
> > MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
> 10.0.0.65 () port 0 AF_INET
> > Recv   Send    Send                          Utilization       Service
> Demand
> > Socket Socket  Message  Elapsed              Send     Recv     Send
>  Recv
> > Size   Size    Size     Time     Throughput  local    remote   local
> remote
> > bytes  bytes   bytes    secs.    10^6bits/s  % S      % U      us/KB
> us/KB
> >
> >  87380  16384   1024    10.02        65.59   34.95    -1.00    174.598
>  -1.249
> >
> > Alignment      Offset         Bytes    Bytes       Sends   Bytes    Recvs
> > Local  Remote  Local  Remote  Xfered   Per                 Per
> > Send   Recv    Send   Recv             Send (avg)          Recv (avg)
> >     8       8      0       0 82158592  1024.00     80233   8905.12   9226
> >
> > Maximum
> > Segment
> > Size (bytes)
> >   1448
> >
> > calculation: overall bytes / size per packet / time = packets per second
> >              82158592 Bytes / 1024 Bytes / 10.02 s =     8007 packets/s
> >
> > ! PERF: TCP_STREAM              65.59 MBit/s ok
> >
> > ---------------------------- TCP_MAERTS -----------------------
> > spawn netperf-2.6.0 -H 10.0.0.65 -P 1 -v 2 -t TCP_MAERTS -c -C -- -m 1024
> > MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
> 10.0.0.65 () port 0 AF_INET
> > Recv   Send    Send                          Utilization       Service
> Demand
> > Socket Socket  Message  Elapsed              Recv     Send     Recv
>  Send
> > Size   Size    Size     Time     Throughput  local    remote   local
> remote
> > bytes  bytes   bytes    secs.    10^6bits/s  % S      % U      us/KB
> us/KB
> >
> >  87380  16384   1024    10.00       543.35   39.06    -1.00    23.555
>  -0.151
> >
> > Alignment      Offset         Bytes    Bytes       Recvs   Bytes    Sends
> > Local  Remote  Local  Remote  Xfered   Per                 Per
> > Recv   Send    Recv   Send             Recv (avg)          Send (avg)
> >     8       8      0       0 679280808  13875.90     48954   16384.00
>  41474
> >
> > Maximum
> > Segment
> > Size (bytes)
> >   1448
> >
> > calculation: overall bytes / size per packet / time = packets per second
> >              679280808 Bytes / 1024 Bytes / 10.00 s =    66336 packets/s
> >
> > ! PERF: TCP_MAERTS              543.35 MBit/s ok
> >
> >
> > The manual states
> >
> >   TCP_STREAM  It is quite simple, transferring some quantity of data
> >               from the system running netperf to the system running
> >               netserver.
> >   TCP_MAERTS  A TCP_MAERTS (MAERTS is STREAM backwards) test is "just
> >               like" a TCP_STREAM test except the data flows from the
> >               netserver to the netperf.
> >
> > So, the scenario is much slower if the Genode side is _receiving_.
>
> Without cursing: This is no good! I will look into that!
>
> Sebastian
>
>
> --
> Sebastian Sumpf
> Genode Labs
>
> http://www.genode-labs.com · http://genode.org
>
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>
>
>
>
>
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Thank you very much for the reply! I will try to use Genode on Nova to
perform these tests.
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