[Cake] cake coding comments

Dave Taht dave.taht at gmail.com
Thu Nov 19 07:24:26 EST 2015


In other news I just took a hack and slash through tc output. Which
could use more hacking and slashing.

http://pastebin.com/xWZViMDP for those of you with proportional fonts in email.


root at snapon:~/git/tc-adv/tc# ./tc -s qdisc show dev eno1
qdisc cake 8004: root refcnt 2 unlimited diffserv4 flows rtt 100.0ms raw
 Sent 7274837008 bytes 4911119 pkt (dropped 0, overlimits 0 requeues 39977)
 backlog 0b 0p requeues 39977
 memory used: 625850b of 15140Kb
 capacity estimate: 841462Kbit
             Tin 0       Tin 1       Tin 2       Tin 3
  thresh        0bit        0bit        0bit        0bit
  target       5.0ms       5.0ms       5.0ms       5.0ms
  interval   100.0ms     100.0ms     100.0ms     100.0ms
  pk_delay     1.4ms       871us         0us       387us
  av_delay     524us       369us         0us       203us
  sp_delay       5us        13us         0us         1us
  pkts        115935      177925           1      632990
  bytes   171360140b  264615514b       1008b  953769597b
  way_inds         0           0           0           0
  way_miss         9          86           1          15
  way_cols         0           0           0           0
  drops            0           0           0           0
  marks           10           1           0           0
  sp_flows         0           1           1           0
  bk_flows         3           2           0           1
  last_len        66          66        1008       18168
  max_len      68130       68130        1008       68130



On Thu, Nov 19, 2015 at 1:20 PM, Kevin Darbyshire-Bryant
<kevin at darbyshire-bryant.me.uk> wrote:
>
>
> On 19/11/15 08:55, Dave Taht wrote:
>> I sat down to try and think outside the boxes we are in...
>>
>>
>> How low can we cut the interval to in a DC scenario?
> 1usec floor.  Specifying an rtt of 20usec would set interval to 20usec
> and target to 1usec.  'datacentre' currently sets target to 5usec,
> interval 100usec.

hmm.

>
>
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