[Pkg-javascript-devel] Bug#956211: Bug#956211: nodejs 10 segfaults when running webpack on gitlab 12.9.2 - FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory

[Pirate Praveen]

Control: tag -1 help

On Wed, Apr 8, 2020 at 4:08 pm, Jérémy Lal <kapouer at melix.org> wrote:
> Tags: wontfix
> 
> Le mer. 8 avr. 2020 à 15:48, Pirate Praveen 
> <praveen at onenetbeyond.org> a écrit :
>> Package: nodejs
>>  Version: 10.19.0~dfsg-3
>>  Severity: grave
>>  Control: notfound -1 12.13.1~dfsg-1
>> 
>> 
>>  nodejs 10 crashed (retried again) and on the same machine nodejs 12
>>  worked.
>>  This has been working upto gitlab 12.8.8 and the failure appeared 
>> when
>>  trying to update to 12.9.2 (just installing gitlab from 
>> experimental in
>>  an lxc container).
> 
> This is a known issue with nodejs and high memory usage, which happen
> to be better with nodejs 12 (but only because gitlab assets 
> compilation does
> not go way above 2GB usage).
> 
> There is no way to fix it in general: you will always find use cases 
> that make
> nodejs crash as soon as it is using GB of heap memory space.
> 
> Any nodejs < 14 version is affected (because who knows, v8 might make 
> it
> possible for node to fix it in nodejs 14) but not in the same way 
> (some fail at 1.4GB,
> others at 2GB of heap space usage).
> 
> You can try running it with this flag:
> webpack --max-old-space-size=4096
> 
> Note also that using a high value by default is not a good solution 
> either.
> 

Thanks for the answer. It may be possible to reduce memory usage by 
excluding system libraries (in /usr/lib/nodejs, /usr/share/nodejs, 
/usr/share/javascript) during transpiling (babel loader). Can someone 
help me with the correct regex for doing it? All examples on the 
internet shows excluding node_modules only.

Currently it is patched to exclude core-js from babel-loader,

test: /\.js$/,
 exclude: [ path =>
           
/node_modules\/(?!tributejs)|node_modules|vendor[\\/]assets/.test(path) 
&
&
           !/\.vue\.js/.test(path),
 /\bcore-js\b/,
 /\bwebpack\/buildin\b/
 ],
         loader: 'babel-loader',

I tried adding '/usr/share/nodejs' as string, 
path.resolve('/usr/share/nodejs') but it did not seem to work.

> Jérémy
>