Re: Why is my gigabit ethernet so slow?

[Antti Kantee <pooka%NetBSD.org@localhost>]

On Tue, Jan 26, 2010 at 05:16:15PM +0200, Martti Kuparinen wrote:
> Antti Kantee wrote:
>> On Tue, Jan 26, 2010 at 01:53:13PM +0000, Matthias Scheler wrote:
>>> On Tue, Jan 26, 2010 at 02:46:26PM +0200, Martti Kuparinen wrote:
>>>> How can I get better speed (800+ Mbps) within NetBSD?
>>> 2.) Please try to run "ttcp" with the option "-s 131072" to increase
>>>     the socket buffer size.
>>
>> Wouldn't net.inet.tcp.recv/sendbuf_auto set to 1 solve that?  Is
>> there any reason it isn't the default?
>
> I ran
>
> sysctl -w net.inet.tcp.recvbuf_auto=1
> sysctl -w net.inet.tcp.sendbuf_auto=1
>
> sysctl -w net.inet6.tcp6.recvbuf_auto=1
> sysctl -w net.inet6.tcp6.sendbuf_auto=1
>
> ifconfig wm0 ip4csum tcp4csum udp4csum tcp6csum udp6csum
> ifconfig wm1 ip4csum tcp4csum udp4csum tcp6csum udp6csum
>
> and now I get 545.01 Mbps.

How about if you run a longer test, say 10s?