Re: Ethernet auto-select and concurrent 10, 100 and 1000 connections

2019-02-05 Thread Mike Pumford 

On 04/02/2019 21:45, Sad Clouds wrote:

I've tried those options before, but performance gain was marginal
compared to gigabit ethernet speeds, i.e. it went up from 13 MiB/sec to
around 17 MiB/sec. But I guess 30% gain is better than nothing.

I think Sun Ultra10 has 32-bit 33 MHz PCI bus, so in theory it has
bandwidth for 133 MiB/sec. Not sure why there is such high CPU usage
on this system when copying data via the network card. OK it's a very
old system, but I was expecting less overhead.



Knowing intel there will be some bit of register or descriptor that 
works great if you are on a cache coherent setup like i386 or amd64 but 
performs less well on the sparc architecture. I have one PCI wm 
interface but that's attached to a 2GHz chip quad core amd64 system  so 
is a lot faster than your ultra10.


Had a quick look at the code and couldn't see anything particularly odd 
in the driver code.


Mike

Re: FOSDEM 2019 - Embedded FreeBSD on a five-core RISC-V processor using LLVM

2019-02-05 Thread Ron Georgia 
Watched the talk on pkgsrc. I thought it was very good. Benny, thanks for the 
link to the prebuilt ARM images, that is very helpful. I've been hedging on 
buying a Pinebook, this talked pushed me over the edge; the only problem is the 
14" is out of stock. Darn!

On 2/4/19, 2:23 AM, "Benny Siegert"  wrote:

I was there!

Rump was mentioned on one slide, in the sense that they would like to
have it -- for hacking and also to get more user-space device drivers.
It sounded more like a project idea, I don't think that there is code
written just yet.

On Mon, Feb 4, 2019 at 12:07 AM Alexander Nasonov  wrote:
>
> Dinesh Thirumurthy wrote:
> > The recording of Benny's talk is at
> > https://video.fosdem.org/2019/K.3.401/netbsd_update.mp4
> >
> > Thomas's talk's recording has not been uploaded. It will show up
> > sometime this week at
> > https://video.fosdem.org/2019/K.3.401/
> >
> > The BSD track that happened is at
> > https://fosdem.org/2019/schedule/track/bsd/
>
> Rump appears in the abstract of this talk:
>
> https://fosdem.org/2019/schedule/event/roadmap_for_the_hurd/
>
> Unfortunately, I missed this talk and I can't tell for sure if the speaker
> refers to NetBSD's rump of to something completely different ;-)
>
> --
> Alex



-- 
Benny