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Update readme and changelog

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This commit is contained in:
Daniel Nelson
2020-03-17 18:39:08 -07:00
parent 0038205266
commit 78fb879aa7
4 changed files with 17 additions and 8 deletions
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19
plugins/processors/dedup/README.md
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@@ -1,11 +1,6 @@
# Dedup Processor Plugin
If a metric sends the same value over successive intervals, suppress sending
the same value to the TSD until this many seconds have elapsed. This helps
graphs over narrow time ranges still see timeseries with suppressed datapoints.
This feature can be used to reduce traffic when metric's value does not change over
time while maintain proper precision when value gets changed rapidly
Filter metrics whose field values are exact repetitions of the previous values.
### Configuration
@@ -15,3 +10,15 @@ time while maintain proper precision when value gets changed rapidly
dedup_interval = "600s"
```
### Example
```diff
- cpu,cpu=cpu0 time_idle=42i,time_guest=1i
- cpu,cpu=cpu0 time_idle=42i,time_guest=2i
- cpu,cpu=cpu0 time_idle=42i,time_guest=2i
- cpu,cpu=cpu0 time_idle=44i,time_guest=2i
- cpu,cpu=cpu0 time_idle=44i,time_guest=2i
+ cpu,cpu=cpu0 time_idle=42i,time_guest=1i
+ cpu,cpu=cpu0 time_idle=42i,time_guest=2i
+ cpu,cpu=cpu0 time_idle=44i,time_guest=2i
```

4
plugins/processors/dedup/dedup.go
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@@ -24,7 +24,7 @@ func (d *Dedup) SampleConfig() string {
}
func (d *Dedup) Description() string {
return "Deduplicate repetitive metrics"
return "Drop metrics with repeating field values"
}
// Remove single item from slice
@@ -73,7 +73,7 @@ func (d *Dedup) Apply(metrics ...telegraf.Metric) []telegraf.Metric {
continue
}
// For each filed compare value with the cached one
// For each field compare value with the cached one
changed := false
for _, f := range metric.FieldList() {
if value, ok := m.GetField(f.Key); ok && value != f.Value {