Nah, that would also show with standalone testing then, and it doesn't.

Marko found out that DataNucleus is pushing DEBUG logs in, dunno yet why.

But, imo, that still shouldn't totally cripple app's performance, yet alone 
kill it at the end.

e.g. I can imagine users trying to debug issues with FINE, in a cluster -- 
that's the whole point of CD
And atm, this is not possible.

-Ales

On Apr 8, 2013, at 4:43 PM, Sanne Grinovero <[email protected]> wrote:

> Is it possible you have the loggers set to a high level of detail but
> only filter the results in the appender configuration?
> In such a setup you would not writ much into the logs but you would
> still have a huge performance penalty as we would still be generating
> the intermediate strings, and Infinispan can be very verbose.
> 
> Sanne
> 
> On 8 April 2013 15:30, Ales Justin <[email protected]> wrote:
>>>> Hmmm, we now disabled CapeDwarf logging, and it runs a lot better.
>>> what does a lot better mean? Does it run as expected?
>> 
>> Querying data on any node returns in ~30ms.
>> And it returns correct data. ;-)
>> 
>>>> We are logging every stuff that goes on,
>>>> and then it's up to user to filter it later -- this is how GAE does it.
>>>> 
>>>> The weird thing is that there shouldn't be any fine log traffic, INFO+ 
>>>> level only.
>>>> Marko is looking into this.
>>>> 
>>>> But sometimes users will want to have FINE log level,
>>>> meaning a lot more traffic will go into cache.
>>>> And then it still shouldn't kill the app -- as it does now.
>>> Would be good to see the amount of time spent in logging.
>> 
>> I doubt it's a lot.
>> 
>> Imo, it's the amount of stuff that gets put into cache that's the problem.
>> And we need to index it all as well -- for GAE log queries.
>> 
>> But it's still not enormous amount of data.
>> e.g. I'm yet to try GridFS (Ispn's GFS), in a real cluster, for our GAE 
>> Blobstore support ...
>> 
>> -Ales
>> 
>> 
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