Bug 748212 - Description of cpu.rt_period_us cpu.rt_runtime_us is incorrect.
Summary: Description of cpu.rt_period_us cpu.rt_runtime_us is incorrect.
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: doc-Resource_Management_Guide
Version: 6.2
Hardware: Unspecified
OS: Unspecified
unspecified
medium
Target Milestone: rc
: ---
Assignee: Martin Prpič
QA Contact: ecs-bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-10-23 04:30 UTC by Etsuji Nakai
Modified: 2011-12-07 12:39 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-12-07 12:39:59 UTC
Target Upstream Version:

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Description Etsuji Nakai 2011-10-23 04:30:46 UTC 
Description of problem:

According to the kernel document:

 http://www.mjmwired.net/kernel/Documentation/scheduler/sched-rt-group.txt

"cpu.rt_period_us/rt_runtime_us" parameters of cgroup is relevant only to realtime scheduling processes.

However, RHEL6 documentation:

 http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html-single/Resource_Management_Guide/index.html#sec-cpu

describes as if it can be applied to normal processes. I suspect this is incorrect.
Comment 3 Etsuji Nakai 2011-10-27 14:26:03 UTC 
The correction in the Red Hat internal stage looks good. Thanks.
Comment 4 Martin Prpič 2011-10-27 14:35:10 UTC 
Moving to ON_QA. Changes described in comment #2 and applied in Red_Hat_Enterprise_Linux-Resource_Management_Guide-6-web-en-US-2-30.el5 and later.

Cheers,
Martin
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