netdev - /proc/net/softnet

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Message-ID: <CAB15j_Dv8hQCDzAYxkTGs5yjz5uhETuhgRxfAvbVbt5mx-P33A@mail.gmail.com>
Date:	Tue, 20 Nov 2012 13:06:52 -0500
From:	Jon Schipp <jonschipp@...il.com>
To:	netdev@...r.kernel.org
Subject: /proc/net/softnet_stat & NAPI

In relation to packet drops, assuming a new kernel, NAPI driver, and
no use of receive packet steering,
does /proc/net/softnet_stats provide any useful packet drop information?

I know that on earlier 2.4 kernels one could grab the drops in the
backlog queue from 2nd column in /proc/net/softnet_stats.
In a modern systems that use NAPI, does softnet_stats serve a similar
purpose e.g. display drops in a NAPI poll queue?

Thanks
Jon
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