pcp
[Top] [All Lists]

collectl vs pmcollectl and qa/709

To: PCP <pcp@xxxxxxxxxxx>
Subject: collectl vs pmcollectl and qa/709
From: Ken McDonell <kenj@xxxxxxxxxxxxxxxx>
Date: Tue, 07 Jul 2015 06:09:22 +1000
Delivered-to: pcp@xxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0
I've been chasing almost universal failure of qa/709 and finally tracked it 
down to output fields being overflowed and "numbers" running together, e.g.

kenj@vm01:~$ pmcollectl -c 2 -i 0.1
#<--------CPU--------><----------Disks-----------><----------Network---------->
#cpu sys inter  ctxsw KBRead  Reads KBWrit Writes KBIn  PktIn  KBOut  PktOut
   2   0 95706115 357392013103731009 2223225 11872228 1036747864638 4579391 
630128 2717987
   2   0 95706133 357392034103731009 2223225 11872228 1036747864638 4579393 
630129 2717989

But more worryingly, the output from pmcollectl and collectl is not even close 
to the same ...

kenj@vm01:~$ collectl -c 2 -i 0.1
waiting for 0.1 second sample...
#<--------CPU--------><----------Disks-----------><----------Network---------->
#cpu sys inter  ctxsw KBRead  Reads KBWrit Writes   KBIn  PktIn  KBOut  PktOut 
   9   0   340    240   7320    350      0      0      4     40      1      10 
  30  10   470   2750  10240    350      0      0      4     60      9      60 

Is this expected?

This is on a 32-bit system vm01 PCP 3.10.6 i686 Ubuntu 12.10 (quantal)

<Prev in Thread] Current Thread [Next in Thread>