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Date: Wed, 15 Feb 2012 17:05:36 +0200 From: alekcejk@...glemail.com To: Neal Cardwell <ncardwell@...gle.com>, netdev@...r.kernel.org Subject: Re: Re: Re: Re: Re: Re: Re: Re: Re: limited network bandwidth with 3.2.x kernels 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 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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