netdev - Re: [PATCH net] net/mlx4_en: Ignore budget on TX napi polling

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Message-Id: <20140708.200116.1002049422940185215.davem@davemloft.net>
Date:	Tue, 08 Jul 2014 20:01:16 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	amirv@...lanox.com
Cc:	edumazet@...gle.com, netdev@...r.kernel.org, yevgenyp@...lanox.com,
	ogerlitz@...lanox.com
Subject: Re: [PATCH net] net/mlx4_en: Ignore budget on TX napi polling

From: Amir Vadai <amirv@...lanox.com>
Date: Tue,  8 Jul 2014 11:28:12 +0300

> It is recommended that TX work not count against the quota.
> The cost of TX packet liberation is a minute percentage of what it costs to
> process an RX frame. Furthermore, that SKB freeing makes memory available for
> other paths in the stack.
> 
> Give the TX a larger budget and be more aggressive about cleaning up the Tx
> descriptors this budget could be changed using ethtool:
> $ ethtool -C eth1 tx-frames-irq <budget>
> 
> Signed-off-by: Amir Vadai <amirv@...lanox.com>

Applied, thanks for following up on this.
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