Re: Re: Re: Re: Re: Re: Re: Re: Re: limited network bandwidth with 3.2.x kernels

alekcejk
2012-02-15T15:05:51Z

В сообщении от Среда 15 февраля 2012 09:49:07 вы написали:
> If there was an increase in the number of bytes charged to the socket
> for each skb, without a corresponding increase in TCP receive buffer
> size, that would explain a systematic decrease in receiver window that
> would cause some paths, like perhaps these, to become
> receiver-window-limited (which is consistent with the symptom of
> stable bandwidth for a given path).
>
> Can you please try increasing the default TCP receiver window to see
> if this helps; try this as root on the 3.2 machine:
>
> sysctl net.ipv4.tcp_rmem="4096 897664 897664"

The same results after setting this.

>
> Basically making the middle number as big as the third number should
> bump up the default receiver window size.
>
> neal