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Re: [ANN] guile-wiredtiger 0.8.0


From: Nala Ginrut
Subject: Re: [ANN] guile-wiredtiger 0.8.0
Date: Fri, 17 May 2019 19:24:38 +0800

Congrats!
Do you think it could be standalone NOSQL database and integrated to Artanis?

On Fri, May 17, 2019 at 6:14 PM Amirouche <address@hidden> wrote:
>
> On 2019-05-16 23:05, Amirouche wrote:
> >
> > - my program leaking memory. I am not sure but it is unlikely that
> > guile
> >   part of the code leaks memory [...] AND I experimented with both Chez
> >   Scheme and Python, they both seems to leak memory. The latter takes
> >   more time but in the end the result is the same. I don't have mongodb
> >   confirmation, to my mind it is again due to a configuration problem.
> >   The default configuration of wiredtiger use one thread for cache
> > eviction.
> >   That is there is a single thread dedicated to fighting the growth of
> > the
> >   cache using some Least Recently Used algorithm IIRC. Anyway, setting
> >   okvs 'eviction-trigger to 85% (aka. triggers eviction when 85% of the
> > cache
> >   is filled) and using 4 threads for eviction itself, allows
> > gotofish.scm
> >   to complete its mission.
>
> Here is memory plot of the run of gotofish:
> https://i.paste.pics/5959b4e53f8197af3253a812e86a43c7.png
>
> Like I try to explain, my understanding is not supposed to sustain a lot
> of write
> for a long period of time.
>
> >
> > The key word is fine-tuning. That is what makes the database works.
> >
>



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