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From Ivan Rakov <ivan.glu...@gmail.com>
Subject Re: Should we enable write throttling by default?
Date Thu, 16 Nov 2017 08:03:14 GMT
I agree.

Moreover, peak throughput after long idle period won't be decreased. 
Throttling works only during ongoing checkpoint (and probability of 
checkpoint running after idle period is very low).

Best Regards,
Ivan Rakov

On 16.11.2017 10:52, Dmitry Pavlov wrote:
> Yes, it is correct.
>
> But still, right after implementation I was for enabling this mode by 
> detault.
> - It is not simple to explain need to enable this feature to each user.
> - Moreover write freezing after peak load may be considered by some 
> Ignite users as bug. Not all of them will write to user list.
>
> чт, 16 нояб. 2017 г. в 10:47, Vladimir Ozerov <vozerov@gridgain.com 
> <mailto:vozerov@gridgain.com>>:
>
>     AFAIK throttling may decrease peak throughput.
>
>     Alex, Ivan,
>     Is it correct?
>
>     On Thu, Nov 16, 2017 at 1:12 AM, Dmitriy Setrakyan
>     <dsetrakyan@apache.org <mailto:dsetrakyan@apache.org>>
>     wrote:
>
>     > Thanks Denis, looks very nice!
>     >
>     > Igniters, let's stop asking users to enable flags in order for
>     the system
>     > to behave properly. All such flags should be enabled by default.
>     >
>     > D.
>     >
>     > On Wed, Nov 15, 2017 at 11:26 AM, Denis Magda <dmagda@apache.org
>     <mailto:dmagda@apache.org>> wrote:
>     >
>     > > Igniters,
>     > >
>     > > I finished documenting pages write throttling and
>     checkpointing buffers
>     > > adjustment sections under the performance notes:
>     > > https://apacheignite.readme.io/docs/durable-memory-tuning#
>     > > section-pages-writes-throttling
>     > > https://apacheignite.readme.io/docs/durable-memory-tuning#
>     > > section-checkpointing-buffer-size
>     > >
>     > > Is there any reason why the write throttling shouldn’t be
>     enabled by
>     > > default? I couldn’t come with any negative effect.
>     > >
>     > > —
>     > > Denis
>     > >
>     > >
>     >
>


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