From: Milan Kocian <milon@wq.cz>
To: Patrick McHardy <kaber@trash.net>
Cc: netdev@vger.kernel.org
Subject: Re: Difference between device statistics from ifconfig and ip -s l l
Date: Wed, 17 Oct 2007 12:13:03 +0200 [thread overview]
Message-ID: <20071017101303.GB16356@wq.cz> (raw)
In-Reply-To: <4715D79E.7020201@trash.net>
On Wed, Oct 17, 2007 at 11:36:30AM +0200, Patrick McHardy wrote:
> Milan Kocian wrote:
>> hello,
>> see dropped packets, please:
>> sit:~# ifconfig eth0
>> eth0 Link encap:Ethernet HWaddr 00:04:23:D6:D5:DE UP
>> BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:522284892 errors:0 dropped:16800 overruns:0 frame:0
>> TX packets:506064445 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000 RX bytes:1405350664 (1.3
>> GiB) TX bytes:4082649020 (3.8 GiB)
>> Base address:0xac00 Memory:ff6e0000-ff700000 see via ip l l
>> (here are no dropped packets):
>> sit:~# ip -s l l dev eth0
>> 2: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc htb qlen 1000
>> link/ether 00:04:23:d6:d5:de brd ff:ff:ff:ff:ff:ff
>> RX: bytes packets errors dropped overrun mcast 2494988681
>> 523755694 0 0 0 57458 TX: bytes packets errors
>> dropped carrier collsns 453184821 507470461 0 0 0 0
>> but see more detailed stats (dropped packet are as missed in RX
>> errors ?!):
>> sit:~# ip -s -s l l dev eth0
>> 2: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc htb qlen 1000
>> link/ether 00:04:23:d6:d5:de brd ff:ff:ff:ff:ff:ff
>> RX: bytes packets errors dropped overrun mcast 2752159866
>> 524110163 0 0 0 57485 RX errors: length crc
>> frame fifo missed
>> 0 0 0 0 16800 TX: bytes
>> packets errors dropped carrier collsns 607359337 507807361 0
>> 0 0 0 TX errors: aborted fifo window heartbeat
>> 0 0 0 0 Is this bug or feature ?
>> From my point of view is somewhere lost any sum.
>> Or is it driver dependent? Kernel 2.6.23.1 (in 2.6.20.20 is the same
>> behavior), driver e1000. iproute2-ss070313; net-tools 1.60, ifconfig 1.42
>> (2001-04-13)
>
>
> ifconfig gets its data from /proc/net/dev, which adds up rx_errors
> and rx_missed.
>
Adds up rx_errors and rx_missed and prints it as dropped ? Ok, ifconfig is
a little old. But why I don't see missed packets from RX errors detailed stats
(ip -s -s l l) in non-detailed stats as errors and see zero ?
regards,
--
Milan Kocian
next prev parent reply other threads:[~2007-10-17 10:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-17 9:27 Difference between device statistics from ifconfig and ip -s l l Milan Kocian
2007-10-17 9:36 ` Patrick McHardy
2007-10-17 10:13 ` Milan Kocian [this message]
2007-10-17 10:35 ` Patrick McHardy
2007-10-17 11:29 ` Milan Kocian
2007-10-17 12:01 ` jamal
2007-10-17 13:42 ` Milan Kocian
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