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From Konstantin Boudnik <...@apache.org>
Subject Re: Durable Memory and Ignite Persistence Tuning
Date Fri, 01 Sep 2017 19:02:41 GMT
Just to spice it up: in my experience, having a few hundred parameters one can
tweak (I am making up the number here) is a tough UX call. In JVM, we had a
team that worked on heuristics that would auto-tune a bunch of things during
the VM startup. Hence, providing the best user experience in most cases.

Do you think something like this is feasible in case of persistence
functionality? Documenting it first is a great first step, but perhaps
wrapping this knowledge into some soft of code, would be even better.

I do have an anecdotal evidence where an experienced Ignite developer
tried to implement a message processing system with Ignite 2.0. After a week
of getting nowhere performance wise, he dropped it and implemented something
custom with Java and nothing else. Take it or leave it: that's why I called
this "anecdotal" in the first place.

Speaking strictly for myself: when I come across blog posts about tuning of
Apache Kudu or Apache Impala the skin on the back of head starts crawling. I
imagine 95% of the potential users of these applications would turn away right
at that point. If the system doesn't work well enough out of the box - screw
it, there's 355 other alternatives available in the FOSS market.


On Fri, Sep 01, 2017 at 11:08AM, Denis Magda wrote:
> Igniters,
> I see a lot of complains regarding the performance of the subj on the user
> list. At the same time, I do believe that in most scenarios it’s a lack of
> knowledge that we keep in secret.
> It's time to document Durable Memory and its Native Persistence tuning
> parameters. Let's start doing this for Linux based deployments first. Here
> is what we have for now (which is almost nothing):
> https://apacheignite.readme.io/docs/durable-memory-tuning
> <https://apacheignite.readme.io/docs/durable-memory-tuning>
> Ideally, at some point we have to come up with doc like this:
> https://access.redhat.com/sites/default/files/attachments/deploying-oracle-12c-on-rhel6_1.2_1.pdf
> Please share your expertise in a form of settings that have to be put on the
> paper. We put them in JIRA and document afterwords:
> https://issues.apache.org/jira/browse/IGNITE-6246
> <https://issues.apache.org/jira/browse/IGNITE-6246>
> —
> Denis

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