atop sometimes misses stats for network interfaces

Bug #1584721 reported by Dmitry Mescheryakov
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Mirantis OpenStack
Status tracked in 10.0.x
10.0.x
Fix Committed
Medium
Ivan Suzdal
6.1.x
Won't Fix
Medium
MOS Linux
9.x
Won't Fix
Medium
MOS Linux

Bug Description

Version: 6.1

Steps to reproduce:
Unclear

Logs collected by atop sometimes miss data for some network interfaces. For example, see attached screenshot. The screenshot was taken with 'Maximum lines for interface statistics' set to 30 (using 'l' key). Here is the list of bridges on controllers in the affected environment: http://paste.openstack.org/show/498054/

Kernel info:
root@node-130:/var/log/atop# uname -a
Linux node-130.domain.tld 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 22:08:27 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Atop uses /proc/net/dev as a source for network stats, so there are two possibilities:
 * /proc/net/dev is missing interfaces
 * atop misses to record some info from /proc/net/dev

Also attached atop log, where at the beginning data for all eth interfaces is missing, but an hour after the start it appears.

Revision history for this message
Dmitry Mescheryakov (dmitrymex) wrote :
Revision history for this message
Dmitry Mescheryakov (dmitrymex) wrote :
Changed in mos:
assignee: nobody → MOS Linux (mos-linux)
tags: added: area-linux
Changed in mos:
status: New → Confirmed
importance: Undecided → Medium
milestone: none → 10.0
tags: added: customer-found
Revision history for this message
Dmitry Sutyagin (dsutyagin) wrote :
tags: added: 10.0-reviewed
Ivan Suzdal (isuzdal)
Changed in mos:
assignee: MOS Linux (mos-linux) → Ivan Suzdal (isuzdal)
status: Confirmed → In Progress
Revision history for this message
Ivan Suzdal (isuzdal) wrote :

Let me to announce availability of netatopd daemon. This daemon has netatop-dkms in dependencies.
You can read how to use it on [0].

Related CR's are [1] and [2].
Please, stay informed what atop versions prior to 2 doesn't support netatop and can't use this information.

[0] http://www.atoptool.nl/netatop.php
[1] https://review.fuel-infra.org/26869
[2] https://review.fuel-infra.org/26870

Changed in mos:
status: In Progress → Fix Committed
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.