[Pacemaker] pacemaker processes RSS growth

[Andrew Beekhof]

On Tue, Dec 11, 2012 at 2:52 PM, Vladislav Bogdanov
<bubble at hoster-ok.com> wrote:
> 11.12.2012 05:12, Andrew Beekhof wrote:
>> On Mon, Dec 10, 2012 at 11:34 PM, Vladislav Bogdanov
>> <bubble at hoster-ok.com> wrote:
>>> 10.12.2012 09:56, Vladislav Bogdanov wrote:
>>>> 10.12.2012 04:29, Andrew Beekhof wrote:
>>>>> On Fri, Dec 7, 2012 at 5:37 PM, Vladislav Bogdanov <bubble at hoster-ok.com> wrote:
>>>>>> 06.12.2012 09:04, Vladislav Bogdanov wrote:
>>>>>>> 06.12.2012 06:05, Andrew Beekhof wrote:
>>>>>>>> I wonder what the growth looks like with the recent libqb fix.
>>>>>>>> That could be an explanation.
>>>>>>>
>>>>>>> Valid point. I will watch.
>>>>>>
>>>>>> On a almost static cluster the only change in memory state during 24
>>>>>> hours is +700kb of shared memory to crmd on a DC. Will look after that
>>>>>> one for more time.
>>>>
>>>> It still grows. ~650-700k per day. I sampled 'maps' and 'smaps' content
>>>> from crmd's proc and will look what differs there over the time.
>>>
>>> smaps tells me it may be in /dev/shm/qb-pengine-event-1735-1736-4-data.
>>> 1735 is pengine, 1736 is crmd.
>>>
>>> Diff of that part:
>>> @@ -56,13 +56,13 @@
>>>  MMUPageSize:           4 kB
>>>  7f427fddf000-7f42802df000 rw-s 00000000 00:0f 12332
>>>   /dev/shm/qb-pengine-event-1735-1736-4-data
>>>  Size:               5120 kB
>>> -Rss:                4180 kB
>>> -Pss:                2089 kB
>>> +Rss:                4320 kB
>>> +Pss:                2159 kB
>>>  Shared_Clean:          0 kB
>>> -Shared_Dirty:       4180 kB
>>> +Shared_Dirty:       4320 kB
>>>  Private_Clean:         0 kB
>>>  Private_Dirty:         0 kB
>>> -Referenced:         4180 kB
>>> +Referenced:         4320 kB
>>>  Anonymous:             0 kB
>>>  AnonHugePages:         0 kB
>>>  Swap:                  0 kB
>>>
>>> Does it help to understand what happens?
>>
>> Not yet, but its very interesting.
>> How did you generate this?  I'm not familiar with smaps.
>
> cat /proc/$crmd_pid/smaps > /path/to/file

I did not know about that. Good to know, thanks!

> sleep $time_to_wait
> diff -u /path/to/file /proc/$crmd_pid/smaps
>
> Some explanations are at f.e.
> http://unix.stackexchange.com/questions/33381/getting-information-about-a-process-memory-usage-from-proc-pid-smaps
>
>
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