linux-kernel - Re: [PATCH] tcp: splice as many packets as possible at once

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Message-ID: <20090109230124.GA11592@ioremap.net>
Date:	Sat, 10 Jan 2009 02:01:24 +0300
From:	Evgeniy Polyakov <zbr@...emap.net>
To:	Willy Tarreau <w@....eu>
Cc:	Eric Dumazet <dada1@...mosbay.com>,
	David Miller <davem@...emloft.net>, ben@...s.com,
	jarkao2@...il.com, mingo@...e.hu, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, jens.axboe@...cle.com
Subject: Re: [PATCH] tcp: splice as many packets as possible at once

On Fri, Jan 09, 2009 at 11:50:10PM +0100, Willy Tarreau (w@....eu) wrote:
> Well, I'm now trying to educate myself on the send part. It's still
> not very clear to me and I'd like to understand a little bit better
> why we have this corruption problem and why there is a difference
> between sending segments from memory and sending them from another
> socket where they were already waiting.

printks are the best choice, since you will get exactly what you are
looking for instead of deciphering what developer or code told you.

> I think I'll put printks everywhere and see what I can observe.
> Knowing about the GSO/SG workaround already helps me enable/disable
> the bug.

I wish I could also be capable to disable the bugs... :)

-- 
	Evgeniy Polyakov
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