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Bug 1372190 - tuned profile configuration for "kernel.sched_rt_runtime_us" in package "tuned-profiles-realtime" cause error when spawning instance
Summary: tuned profile configuration for "kernel.sched_rt_runtime_us" in package "tune...
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: tuned
Version: 7.2
Hardware: Unspecified
OS: Unspecified
Target Milestone: rc
: ---
Assignee: Jaroslav Škarvada
QA Contact: Tereza Cerna
Depends On: 1346715
TreeView+ depends on / blocked
Reported: 2016-09-01 07:02 UTC by Marcel Kolaja
Modified: 2016-09-15 08:00 UTC (History)
9 users (show)

Fixed In Version: tuned-2.5.1-4.el7_2.6
Doc Type: Bug Fix
Doc Text:
Prior to this update, the tuned utility profile configuration for the kernel.sched_rt_runtime_us sysctl variable in the realtime profile included in the tuned-profiles-realtime package was incorrect. As a consequence, spawning a VM instance led to an error due to an incorrect scheduling time. Now, the value of kernel.sched_rt_runtime_us is set to "-1", and the described problem no longer occurs.
Clone Of: 1346715
Last Closed: 2016-09-15 08:00:45 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2016:1848 0 normal SHIPPED_LIVE tuned bug fix update 2016-09-15 11:34:59 UTC

Description Marcel Kolaja 2016-09-01 07:02:21 UTC
This bug has been copied from bug #1346715 and has been proposed
to be backported to 7.2 z-stream (EUS).

Comment 4 Tereza Cerna 2016-09-01 13:05:01 UTC
Verified in:

:: [   LOG    ] :: Check value of kernel.sched_rt_runtime_us

:: [   PASS   ] :: Command 'cat /usr/lib/tuned/realtime/tuned.conf | grep 'kernel.sched_rt_runtime_us' | grep '\-1'' (Expected 0, got 0)
:: [   PASS   ] :: Command 'tuned-adm profile realtime' (Expected 0, got 0)
:: [   PASS   ] :: Command 'sysctl kernel.sched_rt_runtime_us | grep '\-1'' (Expected 0, got 0)
:: [   LOG    ] :: Duration: 1s
:: [   LOG    ] :: Assertions: 3 good, 0 bad
:: [   PASS   ] :: RESULT: Check value of kernel.sched_rt_runtime_us


Reproduced in:

:: [   LOG    ] :: Check value of kernel.sched_rt_runtime_us

:: [   FAIL   ] :: Command 'cat /usr/lib/tuned/realtime/tuned.conf | grep 'kernel.sched_rt_runtime_us' | grep '\-1'' (Expected 0, got 1)
:: [   PASS   ] :: Command 'tuned-adm profile realtime' (Expected 0, got 0)
:: [   FAIL   ] :: Command 'sysctl kernel.sched_rt_runtime_us | grep '\-1'' (Expected 0, got 1)
:: [   LOG    ] :: Duration: 4s
:: [   LOG    ] :: Assertions: 1 good, 2 bad
:: [   FAIL   ] :: RESULT: Check value of kernel.sched_rt_runtime_us

Comment 6 errata-xmlrpc 2016-09-15 08:00:45 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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