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[INF-6356] Updated formula and added more details #12

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[INF-6356] Updated formula and added more details #12

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7 changes: 6 additions & 1 deletion main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -223,6 +223,8 @@ def __init__(self):
self.add_gauge("container_spec_cpu_shares",
"Assigned CPU shares.", labels)

# CPU usage maybe more than 100% see: https://github.com/docker/cli/issues/2134

def add_container(self, appid, taskid, stats, details):
details = details or {}
cpu_stats = stats.get("cpu_stats", {})
Expand Down Expand Up @@ -259,12 +261,15 @@ def add_container(self, appid, taskid, stats, details):

# Calculate percent usage
# https://github.com/moby/moby/blob/8a03eb0b6cc56879eada4a928c6314f33001fc83/integration-cli/docker_api_stats_test.go#L40
# https://github.com/docker/cli/blob/6c12a82f330675d4e2cfff4f8b89a353bcb1fecd/cli/command/container/stats_helpers.go#L180
cpu_percent = 0.0

cpu_delta = cpu_usage.get("total_usage", 0) - pre_cpu_stats.get("cpu_usage", {}).get("total_usage", 0)
sys_delta = cpu_stats.get("system_cpu_usage", 0) - pre_cpu_stats.get("system_cpu_usage", 0)
online_cpus = len(cpu_usage.get("percpu_usage", []))

if sys_delta > 0 and cpu_delta > 0:
cpu_percent = (cpu_delta / sys_delta) * len(cpu_usage.get("percpu_usage", [])) * 100.0
cpu_percent = (cpu_delta / sys_delta) * online_cpus * 100.0

self.get_stat("container_cpu_usage_percent").add_metric([appid, taskid], cpu_percent)

Expand Down