From: Evgeniy Polyakov <zbr@ioremap.net>
To: Neil Horman <nhorman@tuxdriver.com>
Cc: Eric Dumazet <dada1@cosmosbay.com>,
David Miller <davem@davemloft.net>,
netdev@vger.kernel.org, kuznet@ms2.inr.ac.ru, pekkas@netcore.fi,
jmorris@namei.org, yoshfuji@linux-ipv6.org, kaber@trash.net
Subject: Re: [Patch 3/5] Network Drop Monitor: Adding kfree_skb_clean for non-drops and modifying end-of-line points for skbs
Date: Thu, 12 Mar 2009 00:39:02 +0300 [thread overview]
Message-ID: <20090311213902.GA18878@ioremap.net> (raw)
In-Reply-To: <20090311170701.GA17005@hmsreliant.think-freely.org>
On Wed, Mar 11, 2009 at 01:07:01PM -0400, Neil Horman (nhorman@tuxdriver.com) wrote:
> > I was wondering if packets droped at NIC level are handled by "Network Drop Monitor".
> > (See recent discussion about Multicast packet loss)
> >
> > I believe not, maybe I missed something ...
> >
> No, unfortunately, theres no really good way to detect drops at the driver level
> without polling them periodically, which I think is somewhat in opposition to the
> point of this utility. I'd welcome suggestions however.
It could be possible to check softnet stats difference when napi is
scheduled or drop monitor is about to send a packet to the userspace
about different drop.
--
Evgeniy Polyakov
next prev parent reply other threads:[~2009-03-11 21:39 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-03 17:03 [Patch 3/5] Network Drop Monitor: Adding kfree_skb_clean for non-drops and modifying end-of-line points for skbs Neil Horman
2009-03-04 13:54 ` Arnaldo Carvalho de Melo
2009-03-04 14:18 ` Neil Horman
2009-03-04 16:13 ` Arnaldo Carvalho de Melo
2009-03-04 21:06 ` David Miller
2009-03-04 22:45 ` Arnaldo Carvalho de Melo
2009-03-04 22:47 ` David Miller
2009-03-04 22:51 ` Arnaldo Carvalho de Melo
2009-03-04 23:57 ` Patrick McHardy
2009-03-05 21:01 ` Neil Horman
2009-03-11 16:18 ` David Miller
2009-03-11 16:34 ` Eric Dumazet
2009-03-11 16:48 ` David Miller
2009-03-11 17:07 ` Neil Horman
2009-03-11 21:39 ` Evgeniy Polyakov [this message]
2009-03-12 0:30 ` Neil Horman
2009-03-11 19:49 ` Neil Horman
2009-03-13 19:10 ` David Miller
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