All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Nieścierowicz Adam" <adam.niescierowicz@justnet.pl>
To: <netdev@vger.kernel.org>
Subject: tc action mirred packet lost
Date: Sun, 31 Oct 2010 13:44:08 +0100	[thread overview]
Message-ID: <aff638d83f21a1b8ab3e1911f2d3ac43@justnet.pl> (raw)

 Hello,
 recently there was a need to create 3-4 copies of the data sent to the 
 router, I decided to use the tc action mirred.


 Ingress traficn on eth1 copies to eth1 eth2, eth3, eth4, eth5 using:
 ---
 tc qdisc add dev eth1 ingress

 tc filter add dev eth1 parent ffff: protocol ip prio 10 u32 match ip 
 src
 0/0 flowid 1:1 action mirred egress mirror dev eth2 pipe action mirred
 egress mirror dev eth3 pipe action mirred egress mirror dev eth4 pipe
 action mirred egress mirror dev eth5
 --


 Unfortunately the number of packets seen on eth1 qdisc is different 
 than the eth [2-5]
 ---
 12:02:57 CET
 qdisc pfifo_fast 0: dev eth0 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 668167 bytes 6001 pkt (dropped 0, overlimits 0 requeues 0)
  backlog 0b 0p requeues 0
 qdisc pfifo_fast 0: dev eth1 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 36336 bytes 860 pkt (dropped 0, overlimits 0 requeues 0)
  backlog 0b 0p requeues 0
 qdisc ingress ffff: dev eth1 parent ffff:fff1 ----------------
  Sent 7221533005980 bytes 199468106 pkt (dropped 0, overlimits 0 
 requeues 0)
  backlog 0b 0p requeues 0
 qdisc htb 1: dev eth2 root refcnt 2 r2q 10 default 0 
 direct_packets_stat 197808186 ver 3.17
  Sent 7404614590804 bytes 197808186 pkt (dropped 0, overlimits 0 
 requeues 1976)
  backlog 0b 0p requeues 1976
 qdisc pfifo_fast 0: dev eth3 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 7404614590804 bytes 197808186 pkt (dropped 0, overlimits 0 
 requeues 2779)
  backlog 0b 0p requeues 2779
 qdisc pfifo_fast 0: dev eth4 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 7404614590804 bytes 197808186 pkt (dropped 0, overlimits 0 
 requeues 1958)
  backlog 0b 0p requeues 1958
 qdisc pfifo_fast 0: dev eth5 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 7404614590804 bytes 197808186 pkt (dropped 0, overlimits 0 
 requeues 3231)
  backlog 0b 0p requeues 3231

 12:03:07 CET
 qdisc pfifo_fast 0: dev eth0 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 669819 bytes 6003 pkt (dropped 0, overlimits 0 requeues 0)
  backlog 0b 0p requeues 0
 qdisc pfifo_fast 0: dev eth1 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 36336 bytes 860 pkt (dropped 0, overlimits 0 requeues 0)
  backlog 0b 0p requeues 0
 qdisc ingress ffff: dev eth1 parent ffff:fff1 ----------------
  Sent 7221762321336 bytes 199909173 pkt (dropped 0, overlimits 0 
 requeues 0)
  backlog 0b 0p requeues 0
 qdisc htb 1: dev eth2 root refcnt 2 r2q 10 default 0 
 direct_packets_stat 198249138 ver 3.17
  Sent 7404850074198 bytes 198249138 pkt (dropped 0, overlimits 0 
 requeues 1976)
  backlog 0b 0p requeues 1976
 qdisc pfifo_fast 0: dev eth3 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 7404850074198 bytes 198249138 pkt (dropped 0, overlimits 0 
 requeues 2779)
  backlog 0b 0p requeues 2779
 qdisc pfifo_fast 0: dev eth4 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 7404850074198 bytes 198249138 pkt (dropped 0, overlimits 0 
 requeues 1958)
  backlog 0b 0p requeues 1958
 qdisc pfifo_fast 0: dev eth5 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 7404850074198 bytes 198249138 pkt (dropped 0, overlimits 0 
 requeues 3232)
  backlog 0b 0p requeues 3232

 12:03:17 CET
 qdisc pfifo_fast 0: dev eth0 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 671439 bytes 6005 pkt (dropped 0, overlimits 0 requeues 0)
  backlog 0b 0p requeues 0
 qdisc pfifo_fast 0: dev eth1 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 36336 bytes 860 pkt (dropped 0, overlimits 0 requeues 0)
  backlog 0b 0p requeues 0
 qdisc ingress ffff: dev eth1 parent ffff:fff1 ----------------
  Sent 7221978715996 bytes 200334775 pkt (dropped 0, overlimits 0 
 requeues 0)
  backlog 0b 0p requeues 0
 qdisc htb 1: dev eth2 root refcnt 2 r2q 10 default 0 
 direct_packets_stat 198674650 ver 3.17
  Sent 7405072421886 bytes 198674650 pkt (dropped 0, overlimits 0 
 requeues 1976)
  backlog 0b 0p requeues 1976
 qdisc pfifo_fast 0: dev eth3 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 7405072421886 bytes 198674650 pkt (dropped 0, overlimits 0 
 requeues 2779)
  backlog 0b 0p requeues 2779
 qdisc pfifo_fast 0: dev eth4 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 7405072421886 bytes 198674650 pkt (dropped 0, overlimits 0 
 requeues 1958)
  backlog 0b 0p requeues 1958
 qdisc pfifo_fast 0: dev eth5 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 
 0 0 1 1 1 1 1 1 1 1
  Sent 7405072421886 bytes 198674650 pkt (dropped 0, overlimits 0 
 requeues 3232)
  backlog 0b 0p requeues 3232
 ---


 also, each packet arriving at the filter is mirred
 ---
 filter protocol ip pref 10 u32
 filter protocol ip pref 10 u32 fh 800: ht divisor 1
 filter protocol ip pref 10 u32 fh 800::800 order 2048 key ht 800 bkt 0 
 flowid 1:1  (rule hit 422685 success 422685)
   match 00000000/00000000 at 12 (success 422685 )
         action order 1: mirred (Egress Mirror to device eth2) pipe
         index 9 ref 1 bind 1 installed 9 sec
         Action statistics:
         Sent 212219392 bytes 422685 pkt (dropped 0, overlimits 0 
 requeues 0)
         backlog 0b 0p requeues 0

         action order 2: mirred (Egress Mirror to device eth3) pipe
         index 10 ref 1 bind 1 installed 9 sec
         Action statistics:
         Sent 212219392 bytes 422685 pkt (dropped 0, overlimits 0 
 requeues 0)
         backlog 0b 0p requeues 0

         action order 3: mirred (Egress Mirror to device eth4) pipe
         index 11 ref 1 bind 1 installed 9 sec
         Action statistics:
         Sent 212219392 bytes 422685 pkt (dropped 0, overlimits 0 
 requeues 0)
         backlog 0b 0p requeues 0

         action order 4: mirred (Egress Mirror to device eth5) pipe
         index 12 ref 1 bind 1 installed 9 sec
         Action statistics:
         Sent 212219392 bytes 422685 pkt (dropped 0, overlimits 0 
 requeues 0)
         backlog 0b 0p requeues 0
 ---


 traffic on the interface is between 150-200Mbps
 ---
 ifstat -tb -i eth1,eth2,eth3,eth4,eth5
   Time           eth1                eth2                eth3           
  eth4                eth5
 HH:MM:SS   Kbps in  Kbps out   Kbps in  Kbps out   Kbps in  Kbps out   
 Kbps in  Kbps out   Kbps in  Kbps out
 12:32:13  188022.1      0.00      0.47  188016.0      0.00  188039.9    
 0.00  188016.0      0.00  188039.9
 12:32:14  188743.2      0.00      0.00  188736.6      0.00  188736.6    
 0.00  188736.6      0.00  188736.6
 12:32:15  195705.1      0.00      0.47  195700.9      0.00  195682.9    
 0.00  195682.9      0.00  195700.9
 12:32:16  183506.6      0.00      0.00  183516.1      0.00  183522.2    
 0.00  183522.2      0.00  183504.3
 ---

 Am I doing something wrong, or what is a purpose of packet loss.
 My plan is to mirror 800-900Mbps to 4-8 network devices.

 Thanks


             reply	other threads:[~2010-10-31 13:11 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-31 12:44 Nieścierowicz Adam [this message]
2010-11-01 11:15 ` tc action mirred packet lost Jarek Poplawski
2010-11-03  7:16   ` Nieścierowicz Adam

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=aff638d83f21a1b8ab3e1911f2d3ac43@justnet.pl \
    --to=adam.niescierowicz@justnet.pl \
    --cc=netdev@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.