Bug 593267

Summary: patch for procps cgroup display: supress root group
Product: [Fedora] Fedora Reporter: Daniel Novotny <dnovotny>
Component: procpsAssignee: Daniel Novotny <dnovotny>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: rawhideCC: dnovotny, jgorig, lpoetter
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OS: Linux   
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Last Closed: 2010-05-18 12:02:48 UTC Type: ---
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the patch none

Description Daniel Novotny 2010-05-18 11:55:24 UTC 
Created attachment 414818 [details]
the patch

a patch from Lennart Poettering:

The patch changes the output of the cgroup column of ps, hiding all
hierarchies where the process is in the root group. Showing that a
process is not sorted into any group has very little value, and makes it
hard to find the actually interesting information in the ps output.

Or by example:

This is what 'ps xawf -eo pid,args,user,cgroup' shows without this patch:

 1209 sendmail: Queue runner@01:0 smmsp blkio:/;net_cls:/;freezer:/;devices:/;memory:/;cpuacct:/;cpu:/;ns:/;debug:/;cpuset:/;name=systemd:/systemd-1/sendmail.service

As we see quite a few controllers are active but not used by this
process. With this patch applied output looks like this:

 1209 sendmail: Queue runner@01:0 smmsp name=systemd:/systemd-1/sendmail.service

The cgroup hierarchies where the process is in the root group are
suppressed, and only the cgroup hierarchy where the process is actually
in a group is shown.
Comment 1 Daniel Novotny 2010-05-18 12:02:48 UTC 
fixed in procps-3.2.8-10.fc14