Re: re(4) mpsafe

[Jared McNeill <jmcneill%invisible.ca@localhost>]

On Sun, 16 Apr 2017, Jared McNeill wrote:

> Hi folks --
>
> In a (failed) attempt to get more performance out of re(4) on NetBSD/arm, 
> I've made some changes to re(4) to support NET_MPSAFE. I'm not too familiar 
> with code in this area, so I thought I'd post it for feedback:
>
>  http://www.invisible.ca/tmp/re-mpsafe.patch

I've updated the patch with Roy's feedback plus changes to how interrupt 
mitigation works on 8168 based boards.

With these changes I'm now starting to see reasonable numbers from the 
8111G in the NVIDIA Jetson TK1 board:

tegra# ./iperf3.sh
Connecting to host 169.254.188.175, port 5201
...
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.01  sec   771 MBytes   647 Mbits/sec    0             sender
[  4]   0.00-10.01  sec   771 MBytes   647 Mbits/sec                  receiver

tegra# ./iperf3.sh -R
Connecting to host 169.254.188.175, port 5201
Reverse mode, remote host 169.254.188.175 is sending
...
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   991 MBytes   831 Mbits/sec  2149             sender
[  4]   0.00-10.00  sec   990 MBytes   830 Mbits/sec                  receiver


Cheers,
Jared