Le 28/02/2011 16:51, Patrick Lamaiziere a icrit :
Le Sat, 26 Feb 2011 00:23:36 +0900,
Ryan McBride<mcbr...@openbsd.org> a icrit :
How about a _full_ dmesg, so someone can take a wild guess at
what your machine is capable of?
full dmesg : http://user.lamaiziere.net/patrick/dmesg-open48.txt
The box is a Dell R610 server.
This box should be able to fill a gigabit of regular TCP traffic (1500
MTU) without any problem. Double-check your testing procedures.
I will test this.
As i said earlier, almost same setup with bnx(4) instead of em(4) (Dell
R510 with a single Intel X5660) and we can send at Gigabit full duplex
with only around 25% interrupt CPU.
It looks like R610 has 4x bnx(4) iface (Broadcom BCM 5709) maybe you can
try to use them just for testing purpose.
I have some additional comments/questions though:
1) you probably don't want to run bsd.mp on a firewall, it'll hurt you
more than it helps, unless you have significant CPU-bound userland
stuff going on, for example antivirus scanning of email.
I've tried with a sp kernel (amd64), does not look to change something.
2) You may get better performance running i386.
I will try, but I do not expect a lot of difference on the IErr rate.
3) Besides the the em driver changes you've mentioned, is the source
code you're building the kernel clean OPENBSD_4_8 -stable, or
something else (4.8-current from after the 4.8 release, for example)
It's a clean release 4.8/amd64, with 4.8 erratas applied.
Thanks, regards.
