[Swift-devel] Reducing swift log size

[Yadu Nand Babuji]

Okay, here you go:
http://users.rcc.uchicago.edu/~yadunand/run010_swift_normal.tar.gz
http://users.rcc.uchicago.edu/~yadunand/run011_minimal_logging.tar.gz
http://users.rcc.uchicago.edu/~yadunand/run012_minimal_plus_log4j.tar.gz

-Yadu
On 06/11/2014 07:03 PM, Mihael Hategan wrote:
> Sorry, I should have mentioned this, but can you please gzip them? It's
> a bit much otherwise.
>
> Mihael
>
> On Wed, 2014-06-11 at 17:57 -0500, Yadu Nand Babuji wrote:
>> Hi Mihael,
>>
>> I've got the logs for you.
>>
>> This time, i've run the 6001 tasks with 20s delay added, and was all run
>> with swift-0.95-RC6 (from our website) :
>>
>> Normal run                 ->
>> http://users.rcc.uchicago.edu/~yadunand/run010_swift_normal/run010.log (
>> 6.1gb )
>> With minimal logging ->
>> http://users.rcc.uchicago.edu/~yadunand/run011_minimal_logging/run011.log (
>> 7.5 gb )
>> With minimal logging ->
>> http://users.rcc.uchicago.edu/~yadunand/run012_minimal_plus_log4j/run012.log
>> ( 845.4 kb )
>> & log4j properties modified
>>
>> The run with minimal logging ran for ~15mins while the first run took
>> ~12mins. That *might* explain why the one
>> with minimal logging is larger.
>>
>> Thanks,
>> Yadu
>>
>> On 06/11/2014 02:54 PM, Mihael Hategan wrote:
>>> On Wed, 2014-06-11 at 14:46 -0500, Yadu Nand Babuji wrote:
>>>> Hi,
>>>>
>>>> I'm running a proxy app for a user with 6000 tasks each taking a few
>>>> milliseconds, and the log sizes are unusually large. When the tasks are
>>>> set to take 20s, the total log size reaches ~7Gb.
>>> 7GB? Wow. I'd like to see that. Can you upload and post link?
>>>
>>>> I tried setting -minimal.logging and -reduced.logging but still see
>>>> debug lines in the log like:
>>>> 2014-06-11 19:15:06,961+0000 DEBUG Cpu worker started:
>>>> block=0611-1507050-000000 host=midway461 id=10
>>>> 2014-06-11 19:15:06,961+0000 DEBUG Cpu ready for work:
>>>> block=0611-1507050-000000 id=10
>>>>
>>>> Do we need DEBUG lines such as the ones listed above ? Is it reasonable
>>>> to have these set by default to WARN ?
>>> It is until there's a problem and then people ask for the opposite. We
>>> should evaluate whether this belongs in reduced logging or not. But does
>>> that really account for most of the 7G?
>>>
>>>> Secondly, setting -minimal.logging did not turn off these DEBUG lines
>>>> and I had to set the following log4j.properties from DEBUG to WARN to
>>>> remove most of the offending lines:
>>> That sounds like a bug.
>>>
>>>> log4j.logger.org.globus.cog.abstraction.coaster.service.job.manager.Cpu=WARN
>>>> log4j.logger.org.globus.cog.abstraction.coaster.service.job.manager.Block=WARN
>>>>
>>>> With 6001 tasks, each taking 2 ms or so:
>>>> Swift without any changes to logging ->  440879 lines and  51Mb
>>>> Swift with -minimal.logging                ->    83350  lines and 9.5Mb
>>>> Swift with -minimal.logging and         ->      7625  lines and 791Kb
>>>> Cpu, Block log4j properties set
>>>>
>>>> Thanks,
>>>> Yadu
>>>> _______________________________________________
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>