fix(monitoring): use delta() instead of rate() for CPU gauge metric

Fix Grafana warning about using rate() on gauge metric: - ClickHouseProfileEvents_OSCPUVirtualTimeMicroseconds is a gauge, not counter - rate() should only be used with counters; using delta() instead - Add explicit datasource block for consistency API verified via Context7: - /prometheus/docs: rate() should never be used on gauges
2026-02-08 22:48:36 +03:00
parent 68862a47c1
commit 8a6306954e
1 changed files with 5 additions and 1 deletions
@@ -116,7 +116,11 @@
      },
      "targets": [
        {
-          "expr": "rate(ClickHouseProfileEvents_OSCPUVirtualTimeMicroseconds[1m]) / 1000000 / scalar(count({__name__=~\"ClickHouseAsyncMetrics_CPUFrequencyMHz_.*\"})) * 100",
+          "datasource": {
+            "type": "prometheus",
+            "uid": "prometheus_uid"
+          },
+          "expr": "delta(ClickHouseProfileEvents_OSCPUVirtualTimeMicroseconds[1m]) / 60 / 1000000 / scalar(count({__name__=~\"ClickHouseAsyncMetrics_CPUFrequencyMHz_.*\"})) * 100",
          "refId": "A"
        }
      ],