Re: nfe driver 6.2 stable

On Fri, Sep 28, 2007 at 07:05:35PM +0100, Chris wrote:
On 28/09/2007, Pyun YongHyeon <pyunyh@xxxxxxxxx> wrote:
On Thu, Sep 27, 2007 at 06:30:20PM +0100, Chris wrote:
> On 27/09/2007, Pyun YongHyeon <pyunyh@xxxxxxxxx> wrote:
> > On Mon, Sep 24, 2007 at 04:44:09PM +0100, Chris wrote:

[...]
> >
> > > The card is more stable when using nve driver no crashes still but the
> > > performance is around the same maxing out at around 200mbit. I was
> > > expecting nearer 400-500mbit.
> > >
> > > e1000phy0: <Marvell 88E1116 Gigabit PHY> on miibus0
> > >
> >
> > There had been issues nfe(4) with 88E1116/88E1149 PHYs but your issue
> > seems to be different one. How about manually set media configuration?
> > For example, "ifconfig nfe0 media 1000baseTX mediaopt full-duplex"
> >

[...]

>
> I typod I meant to say nve was unstable and nfe has been rock solid so
> great work with the driver. I enabled mpsafe now and still no
> problems and its gave me a little more performance as well, a shame my
> nic has no hardware features (unusual for a gigabit nic) but overall
> glad its at least stable.
>

How did you check network performance?
Maxing out at around 200Mbps seems weird. Personally, I had never seen
GigE hardwares that saturate at 200Mbps. One of causes I can think of
is speed/duplex mismatches with link partner. Manually setting
speed/duplex might fix your performance issue, I guess.

--
Regards,
Pyun YongHyeon


These are ftp transfers it is running on a amd62 x2 dual core
processor and gig of ram, when at max speed cpu usage is very high in
excess of 80% but not completely maxed out. It now seems to be able
to sustain around 30meg/sec the highest I have seen I havent done any
other testing so if you have a better way it would be good to know

ftp transfers involve disk activities so you're not measuring NIC
performance. Try one of benchmark programs in ports/benchmarks
(e.g. netperf, iperf, ttcp etc).
ATM nfe(4)'s interrupt moderation mechanism doesn't seem to work
at all so nfe(4) generates too many interrupts. However I don't
think it wouldn't be major bottleneck of the performance.

thanks. Please bare in mind I have no local access to the server so
crashing it eg. is expensive for as will have to pay for a kvm switch
netstat -i indicates no collisions for a duplex mismatch so not keen
on trying a manual negotiotian again for reasons above. So even for a
card with no hardware features you would expect it to exceed 200mbit
easily?


Yes. You have a gigabit ethernet controller and fast CPU.
Run one of benchmark programs and get a number.

I havent enabled net isr setting I wonder if that will help.


That wouldn't help a lot, I guess.

Chris

--
Regards,
Pyun YongHyeon
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Relevant Pages

  • Re: nfe driver 6.2 stable
    ... >>> The card is more stable when using nve driver no crashes still but the ... > nic has no hardware features but overall ... I havent enabled net isr setting I wonder if that will help. ...
    (freebsd-stable)
  • Re: nfe driver 6.2 stable
    ... > The card is more stable when using nve driver no crashes still but the ... nic has no hardware features but overall ... Maxing out at around 200Mbps seems weird. ... is speed/duplex mismatches with link partner. ...
    (freebsd-stable)