[LARTC] HFSC statistic show question

[Thossapron Apinyapanha]

after i use "tc -s -d class ls dev eth0" will show statistic data about HFSC ,like this
   
  root at ubuntu:/home/shaper# tc -s -d class ls dev eth2
  class hfsc 1: root
  Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
  period 24 work 13844792199226589188 bytes rtwork 20937281664 bytes level 3461036864
  class hfsc 1:11 parent 1:1 sc m1 30720Kbit d 10.0ms m2 30000bit ul m1 0bit d 0us m2 300000bit
  Sent 332564 bytes 235 pkts (dropped 0, overlimits 0)
  period 24 work 13844792199226589188 bytes rtwork 20937281664 bytes level 3461036864
  class hfsc 1:1 parent 1: sc m1 0bit d 0us m2 10000bit ul m1 0bit d 0us m2 10000Kbit
  Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
  period 24 work 13844792199226589188 bytes rtwork 20937281664 bytes level 3461036864
  class hfsc 1:13 parent 1:1 ls m1 0bit d 0us m2 350000bit ul m1 0bit d 0us m2 500000bit
  Sent 84 bytes 2 pkts (dropped 0, overlimits 0)
  period 24 work 13844792199226589188 bytes rtwork 20937281664 bytes level 3461036864
  class hfsc 1:12 parent 1:1 ls m1 0bit d 0us m2 100000bit ul m1 0bit d 0us m2 300000bit
  Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
  period 24 work 13844792199226589188 bytes rtwork 20937281664 bytes level 3461036864
  root at ubuntu:/home/shaper# tc -s -d qdisc ls dev eth2
  qdisc hfsc 1: default 13
  Sent 332648 bytes 237 pkts (dropped 0, overlimits 382)
  root at ubuntu:/home/shaper#
   
  but i'm doubt what is each field mean ?? such period, work ,rtwork 
  and what field are same like "rate" in HTB statistic command 
   
  thank you
   
  raku

 		
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