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From Sonal Goyal <sonalgoy...@gmail.com>
Subject Re: [TOPIC] Snapshot data collection definition - dump triggers
Date Thu, 19 Nov 2009 11:37:25 GMT
Hi Steve,

Do we see a scenario where different timers will be capturing different data
? For example, simple dump of class instances every nth interval, and
detailed dump every mth interval?

For event driven dumps, we may like to look at JNI related crashes.

Thanks and Regards,
Sonal


On Tue, Nov 17, 2009 at 4:16 PM, Steve Poole <spoole167@googlemail.com>wrote:

> Andreas posted some interesting information here
> http://mail-archives.apache.org/mod_mbox/incubator-kato-spec/200911.mbox/%3C6EB74B946FF4CF4BAA39332269A659D50data
> in the24AE296@DYNASERV.dynatrace.local%3E<http://mail-archives.apache.org/mod_mbox/incubator-kato-spec/200911.mbox/%3C6EB74B946FF4CF4BAA39332269A659D5024AE296@DYNASERV.dynatrace.local%3E>
>
> This thread is to discuss the topic of  how and when  snapshot dumps are
> triggered.
>
> Andreas has started with asking for
>
> 1)  scheduled (timed) dumps
> 2)  event driven dumps including fatal JVM crashed type events
>
> Question:    How adaptive would this timed dump have to be?  I can imagine
> having a regular heart beat dump but would we want to be able to modify the
> timeing on the fly?
>
> Question:    Would we want to have multiple timers running with different
> dump output?
>
> Question:    What are the top events that we need to consider should be
> covered -  there is the usual OOM but what else?
>
> --
> Steve
>

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