[systemd-devel] Keeping track of usage time

[Umut Tezduyar Lindskog]

On Tue, Nov 3, 2015 at 1:20 PM, Dimitri John Ledkov
<dimitri.j.ledkov at intel.com> wrote:
> On 3 November 2015 at 06:27, Umut Tezduyar Lindskog <umut at tezduyar.com> wrote:
>> journalctl --list-boots seems great actually but wouldn't work for us.
>> We cannot keep lots of logs in our products.
>>
>
> You shouldn't need to keep lots of logs, just a timer unit that would
> query and store/transmit the bootids/deltas (possibly in a round-robin
> fashion)

That is how I am envisioning it. uptimed seems a bit complex for
something so simple.

>
> Regards,
>
> Dimitri.
>
>
>> Ultimately we are trying to answer the question of how long one of our
>> product has been in use.
>>
>> We will implement it with a .timer/.service which periodically adds
>> /proc/uptime to a file and the file gets preserved over reboot.
>>
>> Umut
>>
>> On Mon, Nov 2, 2015 at 7:00 PM, Lennart Poettering
>> <lennart at poettering.net> wrote:
>>> On Mon, 02.11.15 15:46, Umut Tezduyar Lindskog (umut at tezduyar.com) wrote:
>>>
>>>> Hi,
>>>>
>>>> We would like to implement a feature to keep track of accumulated
>>>> values of uptimes in our products. Tracked time will give us the total
>>>> usage time of our product not just since last reboot (/proc/uptime).
>>>>
>>>> Is upstream interested in having such implementation?
>>>
>>> As Dimitri suggested: wouldn't a journalctl --list-boots invocation
>>> suffice for this?
>>>
>>> Or do you need this per-service? (where the journal should be able to
>>> provide you with the answer too, of course, but with a different line)
>>>
>>> Lennart
>>>
>>> --
>>> Lennart Poettering, Red Hat
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>
>
>
> --
> Regards,
>
> Dimitri.
> 53 sleeps till Christmas, or less
>
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