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[JuanJo Ciarlante <1426589@xxxxxxxxxxxxxxxxxx>]

@peanlvch: FYI as per comment #4 I already tested v4.1-rc1-vivid, same
bad results.

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https://bugs.launchpad.net/bugs/1426589

Title:
  tc class statistics rates are all zero after upgrade to Trusty

Status in iproute2 package in Ubuntu:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  After upgrading an Ubuntu server from Lucid -> Precise -> Trusty the command:
  tc -s class show dev eth0
  no longer shows rates for my classification bands. This worked in Lucid, but not sure if something changed, or if I need to set some system configuration to make it work again. My current non-working version is:

  $ dpkg -s iproute2
  Package: iproute2
  Status: install ok installed
  Priority: important
  Section: net
  Installed-Size: 1147
  Maintainer: Ubuntu Developers <ubuntu-devel-discuss@xxxxxxxxxxxxxxxx>
  Architecture: amd64
  Multi-Arch: foreign
  Version: 3.12.0-2
  Replaces: iproute
  Provides: arpd
  Depends: libc6 (>= 2.14), libdb5.3
  Recommends: libatm1 (>= 2.4.1-17~), libxtables10
  Suggests: iproute2-doc
  Conflicts: arpd, iproute (<< 20130000-1)
  Conffiles:
   /etc/iproute2/group 3aea2c0e0dd75e13a5f8f48f2936915f
   /etc/iproute2/ematch_map b91e7f9b26918449bade9573f8871d61
   /etc/iproute2/rt_realms 7137bdf40e8d58c87ac7e3bba503767f
   /etc/iproute2/rt_tables a1313318d6778fe6b8c680248ef5a463
   /etc/iproute2/rt_dsfield 4264d5c7c8298300185aa04e1a736934
   /etc/iproute2/rt_protos 95ce0b4b5b79f5a8a45941fb418a904c
   /etc/iproute2/rt_scopes 6298b8df09e9bda23ea7da49021ca457
  Description: networking and traffic control tools
   The iproute2 suite is a collection of utilities for networking and
   traffic control.
   .
   These tools communicate with the Linux kernel via the (rt)netlink
   interface, providing advanced features not available through the
   legacy net-tools commands 'ifconfig' and 'route'.
  Original-Maintainer: Debian iproute2 Maintainers <ah-iproute@xxxxxxxxxx>
  Homepage: http://www.linux-foundation.org/en/Net:Iproute2

  Here is the current output of the command, note that 'rate 0bit 0pps'
  is common to all classes, in Lucid this would produce non-zero values
  for active traffic:

  $ tc -s class show dev eth0
  class htb 2:1 root rate 4000Kbit ceil 10000Kbit burst 1600b cburst 1600b
   Sent 140162776 bytes 377793 pkt (dropped 0, overlimits 0 requeues 0)
   rate 0bit 0pps backlog 0b 0p requeues 0
   lended: 23022 borrowed: 0 giants: 0
   tokens: 46812 ctokens: 18725

  class htb 2:2 parent 2:1 leaf 3: prio 0 rate 1000Kbit ceil 4000Kbit burst 1600b cburst 1600b
   Sent 2021584 bytes 6949 pkt (dropped 0, overlimits 0 requeues 0)
   rate 0bit 0pps backlog 0b 0p requeues 0
   lended: 6505 borrowed: 189 giants: 0
   tokens: 187250 ctokens: 46812

  class htb 2:3 parent 2:1 leaf 4: prio 1 rate 2000Kbit ceil 4000Kbit burst 1600b cburst 1600b
   Sent 16695548 bytes 216855 pkt (dropped 0, overlimits 0 requeues 0)
   rate 0bit 0pps backlog 0b 0p requeues 0
   lended: 216846 borrowed: 9 giants: 0
   tokens: 94375 ctokens: 47187

  class htb 2:4 parent 2:1 leaf 5: prio 2 rate 1000Kbit ceil 4000Kbit burst 1600b cburst 1600b
   Sent 2963040 bytes 46619 pkt (dropped 0, overlimits 0 requeues 0)
   rate 0bit 0pps backlog 0b 0p requeues 0
   lended: 46619 borrowed: 0 giants: 0
   tokens: 193250 ctokens: 48312

  class htb 2:5 parent 2:1 leaf 6: prio 3 rate 1000Kbit ceil 4000Kbit burst 1600b cburst 1600b
   Sent 99996 bytes 745 pkt (dropped 0, overlimits 0 requeues 0)
   rate 0bit 0pps backlog 0b 0p requeues 0
   lended: 745 borrowed: 0 giants: 0
   tokens: 183000 ctokens: 45750

  class htb 2:6 parent 2:1 leaf 7: prio 4 rate 1000Kbit ceil 4000Kbit burst 1600b cburst 1600b
   Sent 80608262 bytes 79347 pkt (dropped 0, overlimits 0 requeues 0)
   rate 0bit 0pps backlog 0b 0p requeues 0
   lended: 50544 borrowed: 13902 giants: 0
   tokens: 190750 ctokens: 47687

  class htb 2:7 parent 2:1 leaf 8: prio 5 rate 1000Kbit ceil 4000Kbit burst 1600b cburst 1600b
   Sent 37606539 bytes 26129 pkt (dropped 0, overlimits 0 requeues 0)
   rate 0bit 0pps backlog 0b 0p requeues 0
   lended: 5617 borrowed: 8922 giants: 0
   tokens: -178485 ctokens: 24056

  class htb 2:8 parent 2:1 leaf 9: prio 6 rate 512000bit ceil 1000Kbit burst 1600b cburst 1600b
   Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
   rate 0bit 0pps backlog 0b 0p requeues 0
   lended: 0 borrowed: 0 giants: 0
   tokens: 390625 ctokens: 200000

  class htb 2:9 parent 2:1 leaf a: prio 7 rate 1000Kbit ceil 1000Kbit burst 1600b cburst 1600b
   Sent 167807 bytes 1149 pkt (dropped 0, overlimits 0 requeues 0)
   rate 0bit 0pps backlog 0b 0p requeues 0
   lended: 1149 borrowed: 0 giants: 0
   tokens: 189875 ctokens: 189875

  Did something change upstream to make the rates unavailable? Do I need
  to set some config to enable collection? Running the command as root
  does not make a difference. My kernel is:

  Linux srvr1 3.13.0-46-generic #75-Ubuntu SMP Tue Feb 10 15:24:04 UTC
  2015 x86_64 x86_64 x86_64 GNU/Linux

  Thank you!

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