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Jürgen Kunz
2026-02-19 09:46:46 +00:00
parent 767a40e01e
commit 7c3197455f
5 changed files with 36 additions and 29 deletions
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readme.md
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@@ -71,7 +71,7 @@ SmartMetrics doesn't just monitor your main process – it automatically discove
The library automatically detects available memory whether running on bare metal, in Docker containers, or with Node.js heap restrictions. It picks the most restrictive of:
1. **System total memory** (`os.totalmem()`)
2. **Docker cgroup limit** (`/sys/fs/cgroup/memory/memory.limit_in_bytes`)
2. **Docker cgroup limit** – supports both cgroup v2 (`/sys/fs/cgroup/memory.max`) and cgroup v1 (`/sys/fs/cgroup/memory/memory.limit_in_bytes`)
3. **V8 heap size limit** (`v8.getHeapStatistics().heap_size_limit`)
This ensures accurate percentage calculations regardless of environment.
@@ -101,8 +101,8 @@ Retrieves current system metrics as a structured object.
```typescript
{
process_cpu_seconds_total: number; // Total CPU time in seconds
nodejs_active_handles_total: number; // Active handles count
nodejs_active_requests_total: number; // Active requests count
nodejs_active_handles_total: number; // Always 0 (deprecated Node.js API; real values tracked by Prometheus default collectors)
nodejs_active_requests_total: number; // Always 0 (deprecated Node.js API; real values tracked by Prometheus default collectors)
nodejs_heap_size_total_bytes: number; // V8 heap size in bytes
cpuPercentage: number; // Aggregated CPU usage across all child processes
cpuUsageText: string; // Human-readable CPU usage (e.g. "12.5 %")