Out of memory

[dqrkk]

Hi,

I run a server with 2GB ram, when papyrusjs generate zoom level for my map, the process is killed.
The world is 22MB.
In syslog file, it shows:

Out of memory: Kill process 27511 (node) score 861 or sacrifice child
May 27 10:22:09 vps-01745824 kernel: [246841.076866] Killed process 27511 (node) total-vm:2494560kB, anon-rss:1710500kB, file-rss:0kB, shmem-rss:0kB

I found the solution to this problem:
1/ Add these lines in renderZoomLevel.js

diff --git a/render/renderZoomLevel.js b/render/renderZoomLevel.js
index 6e958f6..b3998d9 100644
--- a/render/renderZoomLevel.js
+++ b/render/renderZoomLevel.js
@@ -76,6 +76,8 @@ module.exports = function (chunkSize, zoomLevelMax, chunkX, chunkZ) {
                                     fs.mkdirSync(path.normalize(path_output + '/map/' + (zoomLevelCurrent) + '/' + (ix) + '/'));
                                 }
                                 tileImg.saveSync(path.normalize(path_output + '/map/' + (zoomLevelCurrent) + '/' + (ix) + '/' + (iz) + '.png'));
+                               tileImg = null;
+                               global.gc();
                                 resolve();
                             }
                             )

2/ Call node with arg: --expose-gc

With this setting, I ran map generation with no problem, using max 500MB memory
Warning! If node is not launched with --expose-gc, it will crash on this step.

[clvrk]

Hey :)! Thanks, this looks promising, I will definitely test this out later!

Would you mind opening a pull request so I can possibly merge your changes?