[Soekris] high CPU usage for network interrupts on 4801

[Poul-Henning Kamp]

In message <200709162004.l8GK4c59098520 at lava.sentex.ca>, Mike Tancsa writes:
>At 03:11 PM 9/16/2007, Jan Hoevers wrote:
>>I'm using a Soekris net4801-60 as a router, with a lan1641 in the PCI
>>slot, giving me 7 ethernet ports. I'm running pfSense 1.0.1, a routing
>>package based on FreeBSD 6.1 and PF. For quite some time everyting was
>>running file.
>
>Not sure about the 4801 specifically, but I noticed I got a bit of a 
>performance boost on my 5501 by going to RELENG_6.  I was able to 
>live lock the box with 100Mb of traffic using 800byte packets before. 
>It now is able to push 500 byte packets at 100Mb, so there seems to 
>be some network efficiency gained from the RELENG_6 I  was using 
>before (july 2007).   The vr driver had not changed in that period so 
>its not that.

I'm about to merge the if_vr from -current to RELENG_6 and that
should help a fair bit.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.