netdev - Re: TCP_NODELAY vs. skb coalescing

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Message-Id: <20080418.193100.207622356.davem@davemloft.net>
Date:	Fri, 18 Apr 2008 19:31:00 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jkosina@...e.cz
Cc:	netdev@...r.kernel.org
Subject: Re: TCP_NODELAY vs. skb coalescing

From: Jiri Kosina <jkosina@...e.cz>
Date: Sat, 19 Apr 2008 03:45:02 +0200 (CEST)

> i.e. first three PUSH packets seem to be sent immediately, but after that 
> TCP switches to buffering the requests into larger chunks (1104 size, no 
> PUSH flag set), which I wouldn't expect with TCP_NODELAY. It seems to me 
> like some form of Nagle is still active.

It's hitting the congestion window.
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