Re: 'collectd' and 'cpufreq' on IPFire Duobox - wrong path in initscript?

[Arne Fitzenreiter <Arne.Fitzenreiter@ipfire.org>]

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On 2018-07-04 11:17, Michael Tremer wrote:
> On Wed, 2018-07-04 at 01:09 +0200, Arne Fitzenreiter wrote:
>> On some maschines the file i
> 
> The file was what?
> 
This was a mistake in my mail mail. I had written about cpuinfo_cur_freq 
and deleted (not complete bacause my tablet has not showed it) this part 
after i have readed the mail again and found the missing "profile0" in 
Matthias path.

I had added the infos to the bug and wait for comments before i change 
it again...


>> 
>> I think this need more investigation.
>> 
>> 
>> 
>> > This was triggered by
>> > https://git.ipfire.org/?p=ipfire-2.x.git;a=commitdiff;h=37458540bf727df09989
>> > c10d640ad13c1a989029
>> >
>> > I thought some cpu graphs on my "Duo Box" could be helpful and
>> > installed
>> > 'cpufrequtils'.
>> >
>> > But after adding the above commit to '/etc/init.d/collectd'
>> > and restarting 'collectd' => no graphs appeared.
>> >
>> > Reason:
>> > The needed directory '/sys/devices/system/cpu/cpufreq/policy0/' doesn't
>> > exist on my machine, so the 'LoadPlugin' was always commented and
>> > deactivated.
>> >
>> > Instead there are '/sys/devices/system/cpu/cpu0' and
>> > '/sys/devices/system/cpu/cpu1'.
>> >
>> > So I tested this the hard way.
>> >
>> > After commenting the if-statement, everything is working, CPU graphs
>> > appear and show reasonable values:
>> >
>> > ...
>> > # Enable cpufreq plugin if cpufreq found
>> > #if [ ! -e  /sys/devices/system/cpu/cpufreq/policy0/*_cur_freq ]; then
>> > #	sed -i -e "s|^LoadPlugin cpufreq|#LoadPlugin cpufreq|g"
>> > /etc/collectd.conf
>> > #else
>> > 	sed -i -e "s|^#LoadPlugin cpufreq|LoadPlugin cpufreq|g"
>> > /etc/collectd.conf
>> > #fi
>> > ...
>> >
>> > Changed this to:
>> >
>> > ...
>> > if [ ! -e /sys/devices/system/cpu/cpu0/cpufreq/*_cur_freq ]; then
>> > ..
>> >
>> > But this gave me an error:
>> >
>> > /etc/init.d/collectd: line 95: [:
>> > /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq: binary operator
>> > expected
>> >
>> > I changed the line to:
>> >
>> > ...
>> > if [ ! -e /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq ]; then
>> > ...
>> >
>> > And now it is running as expected.
>> >
>> > Would this be ok for other machines?
>> > Bug or feature - can anyone confirm?
>> >
>> > Best,
>> > Matthias
>> >
>> > P.S.: I didn't forget the Telko - I was still at work. Too bad...