Bug 1470640 - Docker stats output shows incorrect MEM USAGE
Summary: Docker stats output shows incorrect MEM USAGE
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: docker
Version: 7.2
Hardware: x86_64
OS: Linux
Target Milestone: rc
: ---
Assignee: Antonio Murdaca
QA Contact: atomic-bugs@redhat.com
Depends On:
TreeView+ depends on / blocked
Reported: 2017-07-13 11:09 UTC by Suhaas Bhat
Modified: 2019-03-06 00:43 UTC (History)
3 users (show)

Fixed In Version: docker-2:1.12.6-50.git0fdc778
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2017-09-05 10:35:14 UTC

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2017:2599 normal SHIPPED_LIVE docker bug fix and enhancement update 2017-09-05 14:32:57 UTC

Description Suhaas Bhat 2017-07-13 11:09:36 UTC
Description of problem:

Output of #docker stats is showing the MEM USAGE combined with the page cache.

Version-Release number of selected component (if applicable):

Red Hat Enterprise Linux 7.2

How reproducible:

Upstream https://github.com/moby/moby/issues/10824 can be followed for reproducing the issue.

Actual results:

MEM USAGE along with the PAGE CACHE 

Expected results:

Should have displayed the exact MEM USAGE by subtracting the PAGE CACHE

Additional info:
https://github.com/moby/moby/pull/32777 suggests the fix

Comment 2 Antonio Murdaca 2017-07-13 11:18:16 UTC
Backported in 1.12.6, 1.13.1 and 1.13.1-rhel

Comment 3 Suhaas Bhat 2017-07-21 11:09:31 UTC
Can this be of any help ?


Comment 5 Luwen Su 2017-08-25 08:38:31 UTC
In docker-1.12.6-55.gitc4618fb.el7.x86_64, it should be the right result

# free -h
              total        used        free      shared  buff/cache   available
Mem:           992M        168M         93M         49M        730M        549M
Swap:          2.0G         35M        2.0G

# docker stats --no-stream e2cdbdad43d3 
CONTAINER           CPU %               MEM USAGE / LIMIT     MEM %               NET I/O             BLOCK I/O           PIDS
e2cdbdad43d3        0.00%               388 KiB / 992.6 MiB   0.04%               1.296 kB / 648 B    90.11 kB / 0 B      1

Comment 7 errata-xmlrpc 2017-09-05 10:35:14 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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