I suspect that your caching theory is a likely culprit. One approach is to
sidestep the cache and use fs.readFileSync + JSON.parse. That kind of thing
is pretty easy to hand-roll. Give it a shot and combine with your data =
null dereferencing strategy and see if it helps?

--Josh

On Tue, Sep 19, 2017 at 10:42 PM, Валерий Дубчак <[email protected]>
wrote:

> Node version 8.5.0
> There are 100 JSON files of 8 mb each.
> I read them in the node:
>
> var files = fs.readdirSync ('./ path /');
>
> files.forEach (filename => {
>
> var data = require ('./ path /' + filename);
> data = null;
>
> });
>
> after reading all the files, the program takes 1.2 GB.
>
> Question: why is not the memory freed after data = null; ?
> I try to do:
>
> delete require.cache ['./ path /' + filename];
> global.gc ();
>
> But it did not help.
>
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