Using old color scheme

Author: ArneTR

assets/scss/common/_variables-custom.scss

@@ -1 +1,15 @@
 /** Custom variables */
+
+// Light mode
+$primary: yellow;
+
+
+$body-bg-dark: #212529;
+
+    .navbar,
+    .doks-subnavbar {
+        background-color: #212529 !important;
+        border-bottom: 1px solid $border-dark;
+    }
+
+$body-color-dark: #dee2e6;

content/en/docs/measuring/metric-providers/cpu-utilization-cgroup-system-provider.md

@@ -0,0 +1,70 @@
+---
+title: "CPU % - cgroup - sytem"
+description: "Documentation for CpuUtilizationCgroupSystemProvider of the Green Metrics Tool"
+lead: ""
+date: 2025-01-15T08:49:15+00:00
+draft: false
+images: []
+weight: 141
+---
+### What it does
+
+This metric provider calculates an estimate of the % total CPU usage based on the cgroups stats file of your docker containers. More information about cgroups can be found [here](https://www.man7.org/linux/man-pages/man7/cgroups.7.html).
+
+### Technical Details
+
+- Reads `/proc/stat` all CPU entry .... blah blah blah
+
+### Classname
+
+- `CpuUtilizationCgroupContainerProvider`
+
+### Metric Name
+
+- `cpu_utilization_cgroup_container`
+
+### Input Parameters
+
+- args
+    - `-s`: container-ids seperated by commas
+    - `-i`: interval in milliseconds
+
+By default the measurement interval is 100 ms.
+
+```bash
+./metric-provider-binary -i 100 -s 7f38a4c25fb8f9d5f8651d6ed986b3658dba20d1f5fec98a1f71c141c2b48f4b,c3592e1385d63f9c7810470b12aa00f7d6f7c0e2b9981ac2bdb4371126a0660a
+```
+
+
+### Output
+
+This metric provider prints to Stdout a continuous stream of data. The format of the data is as follows:
+
+`TIMESTAMP READING CONTAINER-ID`
+
+Where:
+- `TIMESTAMP`: Unix timestamp, in microseconds
+- `READING`: The estimated % CPU used
+- `CONTAINER-ID`: The container ID that this reading is for
+
+Any errors are printed to Stderr.
+
+### How it works
+
+The provider assumes that you have [cgroups v2](https://www.man7.org/linux/man-pages/man7/cgroups.7.html) enabled on your system
+
+The provider reads from two files. To get the number of microseconds spent in the CPU by the container, during the interval, it reads from:
+
+```
+/sys/fs/cgroup/user.slice/user-<USER-ID>.slice/user@<USER-ID>.service/user.slice/docker-<CONTAINER-ID>.scope/cpu.stat
+```
+
+To get the total time spent by the cpu during that time interval, in Jiffies, you read from `/proc/stat`. We collect **user**, **nice**, **system**, **idle** **iowait**, **irq**, **softirq**, **steal** (see definitions [here](https://www.idnt.net/en-US/kb/941772)), add them together, divide by _SC_CLK_TCK_ (typically 100 Hz). The percentage of the cgroup time divided by this sum is the total percentage of CPU time spent by the container.
+
+Then it calculates the % cpu used via this formula: `container_reading * 10000 / main_cpu_reading`
+
+In order to work in rootless cgroup delegation must be enabled here:
+`/etc/systemd/system/[email protected]/delegate.conf`
+
+Currently, `<USER-ID>` is set to the calling user.
+