From 0761ce60b834bda13177e0fc44f2e0a8decee197 Mon Sep 17 00:00:00 2001
From: Florian Sesser <florian@private.storage>
Date: Mon, 13 Jun 2022 11:56:59 +0000
Subject: [PATCH] Simplify Grafana used memory query
node_memory_MemAvailable_bytes is a better estimator than the sum I used before
says some Prometheus documentation. It is also almost the same, but reads nicer.
---
.../server/grafana-dashboards/resources-overview.json | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/nixos/modules/monitoring/server/grafana-dashboards/resources-overview.json b/nixos/modules/monitoring/server/grafana-dashboards/resources-overview.json
index 3fe9d0a8..077c43a3 100644
--- a/nixos/modules/monitoring/server/grafana-dashboards/resources-overview.json
+++ b/nixos/modules/monitoring/server/grafana-dashboards/resources-overview.json
@@ -370,7 +370,7 @@
"pluginVersion": "8.3.5",
"targets": [
{
- "expr": "1 - (node_memory_MemFree_bytes + node_memory_Buffers_bytes + node_memory_Cached_bytes) / node_memory_MemTotal_bytes\r\n",
+ "expr": "1 - node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes",
"interval": "",
"intervalFactor": 4,
"legendFormat": "{{instance}}",
--
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