Memory Usage probably calculated wrong

[citronalco]

With this "free" information on an AP, Meshviewer currently reports 78% as Memory Usage (and 22% free):

# free -m
              total        used        free      shared  buff/cache   available
Mem:          57180       22720       15340          88       19120       12572
Swap:             0           0           0

This does not make sense to me. (Also not the value in "available". As far as I know, "available" should be always at least as big as "buff/cache" - and especially at least as big as "free").
I would expect Meshviewer to display (free + buff/cache) / total as available RAM.

[T0biii]

the bar gets the infos from node.memory_usage wich is i guess the infos from the meshviewer.json (memory_usage)

meshviewer/lib/utils/node.ts

Lines 145 to 147 in 8131fae

	self.showRAM = function showRAM(node: Node) {
	return showBar(Math.round(node.memory_usage * 100) + " %", node.memory_usage, node.memory_usage >= 0.8);
	};

the real code is in yanic:
https://github.com/FreifunkBremen/yanic/blob/559cd5927a2115b9181e06a22e059b93e2785fd3/output/meshviewer-ffrgb/struct.go#L139-L153

see the mentioned issues of the Yanic code:

• [BUG] Memory usage is disk usage FreifunkBremen/yanic#35
• [RFC] gluon-status-page: update memory usage estimation freifunk-gluon/gluon#1517