https://bugzilla.redhat.com/show_bug.cgi?id=1379431
Bug ID: 1379431
Summary: PCP network.interface.speed values are inaccurate
Product: Fedora
Version: 24
Component: pcp
Assignee: nathans@xxxxxxxxxx
Reporter: wcohen@xxxxxxxxxx
QA Contact: extras-qa@xxxxxxxxxxxxxxxxx
CC: brolley@xxxxxxxxxx, fche@xxxxxxxxxx, lberk@xxxxxxxxxx,
mgoodwin@xxxxxxxxxx, nathans@xxxxxxxxxx,
pcp@xxxxxxxxxxx, scox@xxxxxxxxxx
Description of problem:
The expected values of network.interface.speed for the gigabit ethernet on a
laptop (Lenovo thinkpad W530) look way off from the expected values. Not
having reasonable values for this metric makes it very difficult to determine
the network interface utilization.
Version-Release number of selected component (if applicable):
$ rpm -q pcp
pcp-3.11.4-1.fc24.x86_64
$ uname -a
Linux santana 4.7.4-200.fc24.x86_64 #1 SMP Thu Sep 15 18:42:09 UTC 2016 x86_64
x86_64 x86_64 GNU/Linux
How reproducible: Every time
Steps to Reproduce:
1. Install pcp on fedora 24
2. pmval network.interface.speed
Actual results:
$ pminfo -d network.interface.speed
network.interface.speed
Data Type: float InDom: 60.3 0xf000003
Semantics: discrete Units: Mbyte / sec
$ pmval network.interface.speed
metric: network.interface.speed
host: santana
semantics: discrete instantaneous value
units: Mbyte / sec
samples: all
wlp3s0 lo virbr0-nic virbr0 vnet0
em1 docker0
2.146 ? 7.813E+04 ? 7.813E+04
7.813E+06 ?
2.146 ? 7.813E+04 ? 7.813E+04
7.813E+06 ?
Expected results:
Would expect the results to be more like the rhel7 on a W541 machine like the
following (enp0s25 interface):
$ rpm -q pcp
pcp-3.10.6-2.el7.x86_64
[wcohen@dhcp129-2 ~]$ uname -a
Linux dhcp129-2.rdu.redhat.com 3.10.0-482.el7.x86_64 #1 SMP Mon Aug 1 10:31:16
EDT 2016 x86_64 x86_64 x86_64 GNU/Linux
$ pmval network.interface.speed
metric: network.interface.speed
host: dhcp129-2.rdu.redhat.com
semantics: discrete instantaneous value
units: Mbyte / sec
samples: all
enp0s25 lo virbr0-nic virbr0
119.2 ? 1.192 ?
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