netperf on RPI

[Mohammad Hamad]

Hi Norman ,
I just moved this morning to the current master branch and i got the same
bad result for the throughput (between 2 and 6  10^6 bits/sec)

I will try the wireshark to monitor the traffics and try to find the
problem.

i will keep you updated.

best,

2014-11-04 11:58 GMT+01:00 Norman Feske <norman.feske at ...1...>:

> Hello Mohammad,
>
> could you please switch to the current master branch? The "rpi_usb"
> branch is out of date. It was just a topic branch for the USB SOF
> optimzation, which ended up the master branch already.
>
> I cannot explain your observation. To investigate, you may use wireshark
> to monitor the traffic in both cases (Linux vs. OpenBSD in the VM) and
> look for the TCP protocol parameters. Maybe Linux uses a very small TCP
> window in the bad case?
>
> > when i run the test from OpenBSD  in the debug output of netperf  in the
> > Rpi I get  meaasges like
> >
> > [init] child "netserver_genode" request resources :ram_quota= XXXXX
>
> We don't have these messages in our log but we use a different branch.
>
> The messages should not interfere with the throughput. They just hint at
> a misconfiguration of the RAM quota assigned to the netserver_genode
> process. The process tries to allocate more memory than assigned. But
> since init has still slack memory available, it is handing out the
> needed memory on demand.
>
> Cheers
> Norman
>
> --
> Dr.-Ing. Norman Feske
> Genode Labs
>
> http://www.genode-labs.com · http://genode.org
>
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