Re: Firewire/USB Card for Qube 2

--- Byron Servies <[email protected]> wrote:

> On Jun 6, 2008, at 7:43 AM, Izumi Tsutsui wrote:
> 
> >> Puzzling, isn't it? And I do not have time (or
> >> knowledge) to track the things down the chain for
> this
> >> slowdown.
> >
> > First, Qube2 is much slower than modern x86
> machines, and
> > only "overmuscled" CPUs can saturate 100BaseTX
> network back in 1999.
> > For example, the Tulip Ethernet chip can't
> transfer receive packets
> > into unaligned DMA buffer and kernel has to copy
> all RX packets
> > from DMA buffer to mbufs.
> >
> > Second, implementation of network stack is too
> complicated and
> > we can't see which part (CPU, devices, drivers,
> VM, protocol layer,
> > checksumming, etc. etc) has bottleneck without
> proper benchmarks.
> >
> > I agree current NetBSD/mips implementation is not
> so optimized
> > for MIPS3 CPUS, though.
> 
> I would recommend performing the same test with the
> last official  
> Qube2 software release (still available on the Sun
> web site).  That  
> should be the performance benchmark, and it is as
> easy to set up as  
> our restore disks.  Perhaps easier, actually, given
> the web interface.
> 
> Byron
> 

I wish I have the time to do all these tests. But for
now as I replied to Tsutsui san my Qube 2 is doing a
great job as my router, firewall, Internet server and
many more and even slow, I still love it.

Thanks!
ET