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[Bug 851883] New: ignore_nice_load setting is lost after suspend2ram
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 22 Nov 2013 17:46:05 +0000
  • Message-id: <bug-851883-21960@http.bugzilla.novell.com/>

https://bugzilla.novell.com/show_bug.cgi?id=851883

https://bugzilla.novell.com/show_bug.cgi?id=851883#c0


Summary: ignore_nice_load setting is lost after suspend2ram
Classification: openSUSE
Product: openSUSE 12.3
Version: Final
Platform: x86-64
OS/Version: openSUSE 12.3
Status: NEW
Severity: Minor
Priority: P5 - None
Component: Basesystem
AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
ReportedBy: rainer.kaluscha@xxxxxxxxxx
QAContact: qa-bugs@xxxxxxx
Found By: ---
Blocker: ---


User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:25.0) Gecko/20100101
Firefox/25.0

pm-suspend sets - for reasons unknown to me - temporarily a new governor
(performance) before suspending to RAM and re-enables the old one after resume
(/usr/lib/pm-utils/sleep.d/94cpufreq).

However, it seems to fail in storing also the corresponding settings of the
current governor so all non-default settings are lost :-(

Especially, setting ignore_nice_load to 1 is reset every time pm-suspend is
used.


See also https://bugzilla.kernel.org/show_bug.cgi?id=63081

Reproducible: Always

Steps to Reproduce:
1. echo 1 >/sys/devices/system/cpu/cpufreq/ondemand/ignore_nice_load

2. start some low priority background jobs - CPU clock stays low.

2. Do pm-suspend and resume

3. CPU is running at maximum speed although there is only low priority work




although there is only low priority work

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