netperf

[Анна Будкина]

I'm measuring throughput between two hosts. I use genode running on
fiasco.OC on one machine and monolithic Linux on another machine. There's
82579LM NIC on each host. I'm running netperf_lxip.run script. As acpi
driver doesn't work on my machine i'm using pci_drv driver. Another problem
is that level-triggered interrupts are not recieved and i'm polling
interrupts in the internal cycle in /os/src/lib/dde_kit/interrupt.cc:
        while (1) {
                _lock.lock();
                if (_handle_irq) _handler(_priv);
                _lock.unlock();
            }

            //while (1) {
                //_irq.wait_for_irq();
                /* only call registered handler function, if IRQ is not
disabled */
                //_lock.lock();
                //if (_handle_irq) _handler(_priv);
                //_lock.unlock();
            //}
 I've done the same thing while testing l4re network stack and it didn't
affect performance then.


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

> Hi Anna,
>
> On 01/28/2014 11:02 AM, Анна Будкина wrote:
> > Hello!
> >
> > I'm running netperf TCP_STREAM and TCP_MAERTS tests for lxip stack and i
> > obtained extremely low result - 5x10^6 bits/s  while the maximum
> > throughput is 1000 mbit/s .
> > I wonder what could be the reason for that.
>
> That is only 5 mbit/s, which is indeed pretty low. Right now the LXIP
> stack should at least do about 500 mbit/s in either direction. Please
> let me know what hardware platform you are using, so I can try to
> reproduce the behavior.
>
> Thanks,
>
> Sebastian
>
> --
> Sebastian Sumpf
> Genode Labs
>
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