52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
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//go:build linux
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package kernel
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import (
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"fmt"
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"time"
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"github.com/prometheus/procfs"
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"github.com/influxdata/telegraf"
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)
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// Gather PSI metrics
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func (k *Kernel) gatherPressure(acc telegraf.Accumulator) error {
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for _, resource := range []string{"cpu", "memory", "io"} {
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now := time.Now()
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psiStats, err := k.procfs.PSIStatsForResource(resource)
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if err != nil {
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return fmt.Errorf("failed to read %s pressure: %w", resource, err)
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}
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stats := map[string]*procfs.PSILine{
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"some": psiStats.Some,
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"full": psiStats.Full,
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}
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for _, typ := range []string{"some", "full"} {
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if resource == "cpu" && typ == "full" {
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// resource=cpu,type=full is omitted because it is always zero
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continue
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}
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tags := map[string]string{
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"resource": resource,
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"type": typ,
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}
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stat := stats[typ]
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acc.AddCounter("pressure", map[string]interface{}{
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"total": stat.Total,
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}, tags, now)
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acc.AddGauge("pressure", map[string]interface{}{
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"avg10": stat.Avg10,
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"avg60": stat.Avg60,
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"avg300": stat.Avg300,
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}, tags, now)
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}
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}
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return nil
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}
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