Workers can run log_status so ask for the right pid

[jrafanie]

If no argument is provided, processInfo will get the current process'
memory information, which when run from a queue worker, will not be the
server's pid.

https://bugzilla.redhat.com/show_bug.cgi?id=1519953

When run on an appliance with a bloated MiqServer process:

Before (uses the current Process's memory information):

irb(main):001:0> MiqServer.my_server.process_status
=> {:memory_usage=>148525056, :memory_size=>439468032, :percent_memory=>0.89, :cpu_time=>779, :percent_cpu=>0.0, :proportional_set_size=>139434000, :os_priority=>20}

After:

irb(main):001:0> MiqServer.my_server.process_status
=> {:memory_usage=>3902767104, :memory_size=>4303794176, :percent_memory=>23.44, :cpu_time=>15366516, :percent_cpu=>9.78, :proportional_set_size=>1431006000, :os_priority=>20}

@dmetzger57 @NickLaMuro don't trust any MiqServer.log_status log lines, they're most likely wrong.

[miq-bot]

Checked commit jrafanie@38b66e6 with ruby 2.3.3, rubocop 0.47.1, and haml-lint 0.20.0
1 file checked, 0 offenses detected
Everything looks fine. 👍

[gtanzillo]

👍

[NickLaMuro]

Good catch!

[jrafanie]

@miq-bot add_label gaprindashvili/yes
@miq-bot add_label euwe/yes
@miq-bot add_label fine/yes

[simaishi]

Gaprindashvili backport details:

$ git log -1
commit 084c26523be624a44d7b45fb1a4ae1e1f5cee707
Author: Oleg Barenboim <chessbyte@gmail.com>
Date:   Tue Nov 14 17:19:34 2017 +0200

    Merge pull request #16460 from jrafanie/get_server_process_info
    
    Workers can run log_status so ask for the right pid
    (cherry picked from commit 974e36052bdf98dc46637f821db8026295759062)

[simaishi]

@jrafanie Please add BZ link.

[jrafanie]

Added link above @simaishi

[simaishi]

Fine backport details:

$ git log -1
commit a093979fa911b8944d362e479bef5bce7072e701
Author: Oleg Barenboim <chessbyte@gmail.com>
Date:   Tue Nov 14 17:19:34 2017 +0200

    Merge pull request #16460 from jrafanie/get_server_process_info
    
    Workers can run log_status so ask for the right pid
    (cherry picked from commit 974e36052bdf98dc46637f821db8026295759062)
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1519987

[simaishi]

Euwe backport details:

$ git log -1
commit 46b761ca782a7772ad94529a9e858251eecf20b5
Author: Oleg Barenboim <chessbyte@gmail.com>
Date:   Tue Nov 14 17:19:34 2017 +0200

    Merge pull request #16460 from jrafanie/get_server_process_info
    
    Workers can run log_status so ask for the right pid
    (cherry picked from commit 974e36052bdf98dc46637f821db8026295759062)
    
    Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1519988