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softnet: additionals metrics from softnet_data, (#2592)
* softnet: additionals metrics from softnet_data, https://github.com/prometheus/procfs/pull/473 --------- Signed-off-by: remi <remijouannet@gmail.com> Signed-off-by: Rémi Jouannet <remijouannet@gmail.com>
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Remi Jouannet
GitHub
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c05b97ce32
commit
df1b53bee2
@ -3040,18 +3040,42 @@ node_softirqs_total{vector="rcu"} 508444
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node_softirqs_total{vector="sched"} 622196
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node_softirqs_total{vector="tasklet"} 1.783454e+06
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node_softirqs_total{vector="timer"} 1.481983e+06
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# HELP node_softnet_backlog_len Softnet backlog status
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# TYPE node_softnet_backlog_len gauge
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node_softnet_backlog_len{cpu="0"} 0
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node_softnet_backlog_len{cpu="1"} 0
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node_softnet_backlog_len{cpu="2"} 0
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node_softnet_backlog_len{cpu="3"} 0
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# HELP node_softnet_cpu_collision_total Number of collision occur while obtaining device lock while transmitting
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# TYPE node_softnet_cpu_collision_total counter
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node_softnet_cpu_collision_total{cpu="0"} 0
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node_softnet_cpu_collision_total{cpu="1"} 0
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node_softnet_cpu_collision_total{cpu="2"} 0
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node_softnet_cpu_collision_total{cpu="3"} 0
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# HELP node_softnet_dropped_total Number of dropped packets
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# TYPE node_softnet_dropped_total counter
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node_softnet_dropped_total{cpu="0"} 0
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node_softnet_dropped_total{cpu="1"} 41
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node_softnet_dropped_total{cpu="2"} 0
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node_softnet_dropped_total{cpu="3"} 0
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# HELP node_softnet_flow_limit_count_total Number of times flow limit has been reached
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# TYPE node_softnet_flow_limit_count_total counter
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node_softnet_flow_limit_count_total{cpu="0"} 0
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node_softnet_flow_limit_count_total{cpu="1"} 0
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node_softnet_flow_limit_count_total{cpu="2"} 0
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node_softnet_flow_limit_count_total{cpu="3"} 0
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# HELP node_softnet_processed_total Number of processed packets
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# TYPE node_softnet_processed_total counter
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node_softnet_processed_total{cpu="0"} 299641
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node_softnet_processed_total{cpu="1"} 916354
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node_softnet_processed_total{cpu="2"} 5.577791e+06
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node_softnet_processed_total{cpu="3"} 3.113785e+06
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# HELP node_softnet_received_rps_total Number of times cpu woken up received_rps
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# TYPE node_softnet_received_rps_total counter
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node_softnet_received_rps_total{cpu="0"} 0
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node_softnet_received_rps_total{cpu="1"} 0
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node_softnet_received_rps_total{cpu="2"} 0
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node_softnet_received_rps_total{cpu="3"} 0
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# HELP node_softnet_times_squeezed_total Number of times processing packets ran out of quota
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# TYPE node_softnet_times_squeezed_total counter
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node_softnet_times_squeezed_total{cpu="0"} 1
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@ -3062,18 +3062,42 @@ node_softirqs_total{vector="rcu"} 508444
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node_softirqs_total{vector="sched"} 622196
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node_softirqs_total{vector="tasklet"} 1.783454e+06
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node_softirqs_total{vector="timer"} 1.481983e+06
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# HELP node_softnet_backlog_len Softnet backlog status
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# TYPE node_softnet_backlog_len gauge
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node_softnet_backlog_len{cpu="0"} 0
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node_softnet_backlog_len{cpu="1"} 0
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node_softnet_backlog_len{cpu="2"} 0
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node_softnet_backlog_len{cpu="3"} 0
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# HELP node_softnet_cpu_collision_total Number of collision occur while obtaining device lock while transmitting
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# TYPE node_softnet_cpu_collision_total counter
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node_softnet_cpu_collision_total{cpu="0"} 0
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node_softnet_cpu_collision_total{cpu="1"} 0
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node_softnet_cpu_collision_total{cpu="2"} 0
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node_softnet_cpu_collision_total{cpu="3"} 0
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# HELP node_softnet_dropped_total Number of dropped packets
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# TYPE node_softnet_dropped_total counter
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node_softnet_dropped_total{cpu="0"} 0
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node_softnet_dropped_total{cpu="1"} 41
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node_softnet_dropped_total{cpu="2"} 0
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node_softnet_dropped_total{cpu="3"} 0
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# HELP node_softnet_flow_limit_count_total Number of times flow limit has been reached
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# TYPE node_softnet_flow_limit_count_total counter
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node_softnet_flow_limit_count_total{cpu="0"} 0
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node_softnet_flow_limit_count_total{cpu="1"} 0
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node_softnet_flow_limit_count_total{cpu="2"} 0
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node_softnet_flow_limit_count_total{cpu="3"} 0
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# HELP node_softnet_processed_total Number of processed packets
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# TYPE node_softnet_processed_total counter
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node_softnet_processed_total{cpu="0"} 299641
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node_softnet_processed_total{cpu="1"} 916354
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node_softnet_processed_total{cpu="2"} 5.577791e+06
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node_softnet_processed_total{cpu="3"} 3.113785e+06
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# HELP node_softnet_received_rps_total Number of times cpu woken up received_rps
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# TYPE node_softnet_received_rps_total counter
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node_softnet_received_rps_total{cpu="0"} 0
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node_softnet_received_rps_total{cpu="1"} 0
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node_softnet_received_rps_total{cpu="2"} 0
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node_softnet_received_rps_total{cpu="3"} 0
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# HELP node_softnet_times_squeezed_total Number of times processing packets ran out of quota
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# TYPE node_softnet_times_squeezed_total counter
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node_softnet_times_squeezed_total{cpu="0"} 1
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@ -26,11 +26,15 @@ import (
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)
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type softnetCollector struct {
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fs procfs.FS
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processed *prometheus.Desc
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dropped *prometheus.Desc
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timeSqueezed *prometheus.Desc
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logger log.Logger
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fs procfs.FS
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processed *prometheus.Desc
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dropped *prometheus.Desc
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timeSqueezed *prometheus.Desc
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cpuCollision *prometheus.Desc
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receivedRps *prometheus.Desc
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flowLimitCount *prometheus.Desc
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softnetBacklogLen *prometheus.Desc
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logger log.Logger
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}
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const (
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@ -65,19 +69,41 @@ func NewSoftnetCollector(logger log.Logger) (Collector, error) {
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"Number of times processing packets ran out of quota",
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[]string{"cpu"}, nil,
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),
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cpuCollision: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, softnetSubsystem, "cpu_collision_total"),
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"Number of collision occur while obtaining device lock while transmitting",
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[]string{"cpu"}, nil,
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),
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receivedRps: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, softnetSubsystem, "received_rps_total"),
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"Number of times cpu woken up received_rps",
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[]string{"cpu"}, nil,
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),
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flowLimitCount: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, softnetSubsystem, "flow_limit_count_total"),
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"Number of times flow limit has been reached",
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[]string{"cpu"}, nil,
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),
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softnetBacklogLen: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, softnetSubsystem, "backlog_len"),
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"Softnet backlog status",
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[]string{"cpu"}, nil,
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),
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logger: logger,
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}, nil
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}
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// Update gets parsed softnet statistics using procfs.
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func (c *softnetCollector) Update(ch chan<- prometheus.Metric) error {
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var cpu string
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stats, err := c.fs.NetSoftnetStat()
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if err != nil {
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return fmt.Errorf("could not get softnet statistics: %w", err)
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}
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for cpuNumber, cpuStats := range stats {
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cpu := strconv.Itoa(cpuNumber)
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for _, cpuStats := range stats {
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cpu = strconv.FormatUint(uint64(cpuStats.Index), 10)
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ch <- prometheus.MustNewConstMetric(
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c.processed,
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@ -97,6 +123,30 @@ func (c *softnetCollector) Update(ch chan<- prometheus.Metric) error {
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float64(cpuStats.TimeSqueezed),
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cpu,
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)
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ch <- prometheus.MustNewConstMetric(
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c.cpuCollision,
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prometheus.CounterValue,
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float64(cpuStats.CPUCollision),
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cpu,
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)
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ch <- prometheus.MustNewConstMetric(
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c.receivedRps,
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prometheus.CounterValue,
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float64(cpuStats.ReceivedRps),
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cpu,
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)
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ch <- prometheus.MustNewConstMetric(
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c.flowLimitCount,
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prometheus.CounterValue,
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float64(cpuStats.FlowLimitCount),
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cpu,
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)
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ch <- prometheus.MustNewConstMetric(
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c.softnetBacklogLen,
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prometheus.GaugeValue,
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float64(cpuStats.SoftnetBacklogLen),
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cpu,
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)
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}
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return nil
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