Re: [vpp-dev] Issues with counters in statistics segment

2020-04-11 Thread Paul Vinciguerra 
Hi Bin,

'show stats seg' shows the layout of the data in the stats segment.
' /err/af-packet-input/partial packet ' is at index number 211.

I think you are looking for:
DBGvpp# create loop interface
loop0
DBGvpp# set interface state loop0 up
DBGvpp# set interface lldp loop0
DBGvpp# show node counters
Count                    Node                  Reason
1               lldp-input               good lldp packets (processed)
DBGvpp# show errors
Count                    Node                  Reason
1               lldp-input               good lldp packets (processed)
DBGvpp#

vpp# show statistics seg

Name
 Type  Value

/buffer-pools/default-numa-0/available 
ScalarPtr   16800

/buffer-pools/default-numa-0/cached    
ScalarPtr   0

/buffer-pools/default-numa-0/used  
ScalarPtr   0

/err/af-packet-input/partial packet    
ErrIndex  211
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[vpp-dev] Issues with counters in statistics segment

2020-04-10 Thread Bin Zhou (bzhou2) via lists.fd.io 
Hi,
I observed some issues about statistics segment, your help will be highly 
appreciated:
1). "show statistics segment" return incorrect counters.
2). There is no vlib function to remove counters from statistics segment.

Details of each question:
1). "show statistics segment" return incorrect counters.
My VPP (release 19.08) started with only local interface (down) and pg 
interfaces (didn't enable packet-generator), so there were no packets processed 
at all:
vpp# show interface
  Name   IdxState  MTU (L3/IP4/IP6/MPLS) 
Counter  Count
local00 down  0/0/0/0
pg0   1  up  9000/0/0/0
pg1   2  up  9000/0/0/0

However, when I do "show statistics segment", I saw most counters have non-0 
values, just captured some below:
vpp# show statistics seg
Name
 Type  Value
/buffer-pools/default-numa-0/available 
ScalarPtr   16800
/buffer-pools/default-numa-0/cached
ScalarPtr   0
/buffer-pools/default-numa-0/used  
ScalarPtr   0
/err/af-packet-input/partial packet
ErrIndex  211
/err/ah4-decrypt/AH decryption failed  
ErrIndex 1160
/err/ah4-decrypt/AH pkts received  
ErrIndex 1159
/err/ah4-decrypt/IP fragments drop 
ErrIndex 1163
/err/ah4-decrypt/Integrity check failed
ErrIndex 1161


I issued commands "clear errors", "clear counters" and "clear node counters", 
but "show statistics segment" still same.
I added some code inside python test framework (make test TEST=..) to dump some 
node's error counters and I did get 0 for all.
Is this a bug in "show statistics segment"?

2). There is no vlib function to remove counters from statistics segment.
I need to dynamically add/delete counters in statistics segment. But I don't 
see any vlib function that can remove counters.
Is it easy to add one vlib function? Can you please provide some guide so I can 
write that function by myself?
I also didn't find vlib function to decrement a counter, which seems easy to 
add though.

Thanks a lot,
Bin


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