node - invalid array length

Question

I'm using node v0.12.4. When I run the following code with node --max-old-space-size=8192 test.js it gives me the error FATAL ERROR: invalid array length Allocation failed - process out of memory

var a = new Array(200000000);
console.log(a.length);

However if I change the size to 300000000 I don't get any error. What's going on here? Is there some command line argument aside from --max-old-space-size I need to change?

My first guess was that the first size was slightly less than the biggest 32-bit integer, and the second slightly bigger, but there's one too few zeros for that to be the problem. — Pointy
– Pointy, Commented May 29, 2015 at 3:17
Interestingly, I actually can't recreate this in v0.10. v0.11 segfaults. — fny
– fny, Commented May 29, 2015 at 4:29
Perhaps relevant: Node.js heap memory limit for single object — jfriend00
– jfriend00, Commented May 29, 2015 at 4:32
Sounds like it was introduced in 0.11.15 and it's still open. — Val
– Val, Commented May 29, 2015 at 5:36
There is something fishy here, why would 300 000 000 not give you the same warning? Does the console print the correct length when you use 300 000 000? — Frank Bryce
– Frank Bryce, Commented Jul 8, 2015 at 14:09

Vishnu Mishra · Accepted Answer · 2015-06-13 06:29:03Z

11

V8's heap size is limited to 1 GB for 64 bit and 512 for 32-bit machine, but Buffer objects exist largely outside the heap. you can expand the memory use up to 1.7 GB in 64-bit and ~1 GB in 32-bit machine. You can try this.

--max-old-space-size=3000  --trace-gc-verbose

you can print the trace to know about the memory use.

answered Jun 13, 2015 at 6:29

Vishnu Mishra

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Esqarrouth · Accepted Answer · 2021-02-01 07:47:59Z

0

Compiling Typescript to ES2017+ might solve this issue.

Sources:
NodeJS memory growth - Memory leak in (system)?
https://github.com/express-validator/express-validator/issues/824

answered Feb 1, 2021 at 7:47

Esqarrouth

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Community · Accepted Answer · 2017-05-23 12:26:01Z

-1

There is a limit of memory.64bit Machines can use about 1.6gb.This is the limit of V8 compiler. this links maybe can help you

Configuring v8's memory management to be smart for a node.js process

https://groups.google.com/forum/#!topic/nodejs/BQ5dSm8lITQ

edited May 23, 2017 at 12:26

CommunityBot

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answered Jun 11, 2015 at 21:04

Hazarapet Tunanyan

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