Re: [ANN] guile-wiredtiger 0.8.0

[Amirouche]

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.