• Node.js Version: Build from main with gcc-10
• OS: Ubuntu 20.04
• Scope (install, code, runtime, meta, other?): code

I have got error occasionally [ERR_WORKER_OUT_OF_MEMORY]: Worker terminated due to reaching memory limit: JS heap out of memory.

I am using nodejs with 125 worker in [64 core, 128 thread, 256GB memory] machine, and my program eat a lot of memory.
Thus, each worker can use only 2GB memory, at a maximum.
To decrease the number of errors, I set the following configuration.

export CFLAGS="-march=native"
export CXXFLAGS="-march=native"
export CPPFLAGS="-march=native"
./configure --experimental-enable-pointer-compression --enable-lto

and run nodejs with node --max-old-space-size=2040.

From the documentation, I guess that --max-old-space-size=2040 is inherited to worker.

execArgv <string[]> List of node CLI options passed to the worker.
V8 options (such as --max-old-space-size) and options that affect
the process (such as --title) are not supported.
If set, this will be provided as process.execArgv inside the worker.
By default, options will be inherited from the parent thread.

Question:

• Are there any recommended configuration option to add or remove for decreasing memory usage or running faster?
• I have not set worker.resourceLimits yet. Should I set resourceLimits.maxOldGenerationSizeMb instead of --max-old-space-size?