netdev - Re: using software TSO on non-TSO capable netdevices

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Message-ID: <20080731030339.GA4327@gondor.apana.org.au>
Date:	Thu, 31 Jul 2008 11:03:39 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Lennert Buytenhek <buytenh@...tstofly.org>
Cc:	davem@...emloft.net, netdev@...r.kernel.org, akarkare@...vell.com,
	nico@....org
Subject: Re: using software TSO on non-TSO capable netdevices

On Thu, Jul 31, 2008 at 04:36:52AM +0200, Lennert Buytenhek wrote:
>
> The maximum that splice will allow -- PIPE_BUFFERS * PAGE_SIZE.
> 
> I.e. the writes should be large enough.

Have you looked at the packet dump? Maybe it was being constrained
by the receiver/congestion windows.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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