lib/storage: move -dedup.minScrapeInterval flag outside lib/storage, so it doesnt show up in vminsert in cluster version

app/vmselect/main.go

@@ -18,6 +18,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/procutil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/timerpool"
 	"github.com/VictoriaMetrics/metrics"
 )
@@ -27,8 +28,11 @@ var (
 	cacheDataPath         = flag.String("cacheDataPath", "", "Path to directory for cache files. Cache isn't saved if empty")
 	maxConcurrentRequests = flag.Int("search.maxConcurrentRequests", getDefaultMaxConcurrentRequests(), "The maximum number of concurrent search requests. "+
 		"It shouldn't be high, since a single request can saturate all the CPU cores. See also -search.maxQueueDuration")
-	maxQueueDuration = flag.Duration("search.maxQueueDuration", 10*time.Second, "The maximum time the request waits for execution when -search.maxConcurrentRequests limit is reached")
+	maxQueueDuration  = flag.Duration("search.maxQueueDuration", 10*time.Second, "The maximum time the request waits for execution when -search.maxConcurrentRequests limit is reached")
-	storageNodes     = flagutil.NewArray("storageNode", "Addresses of vmstorage nodes; usage: -storageNode=vmstorage-host1:8401 -storageNode=vmstorage-host2:8401")
+	minScrapeInterval = flag.Duration("dedup.minScrapeInterval", 0, "Remove superflouos samples from time series if they are located closer to each other than this duration. "+
+		"This may be useful for reducing overhead when multiple identically configured Prometheus instances write data to the same VictoriaMetrics. "+
+		"Deduplication is disabled if the -dedup.minScrapeInterval is 0")
+	storageNodes = flagutil.NewArray("storageNode", "Addresses of vmstorage nodes; usage: -storageNode=vmstorage-host1:8401 -storageNode=vmstorage-host2:8401")
 )
 
 func getDefaultMaxConcurrentRequests() int {
@@ -52,6 +56,7 @@ func main() {
 
 	logger.Infof("starting netstorage at storageNodes %s", *storageNodes)
 	startTime := time.Now()
+	storage.SetMinScrapeIntervalForDeduplication(*minScrapeInterval)
 	if len(*storageNodes) == 0 {
 		logger.Fatalf("missing -storageNode arg")
 	}

app/vmstorage/main.go

@@ -28,6 +28,9 @@ var (
 
 	bigMergeConcurrency   = flag.Int("bigMergeConcurrency", 0, "The maximum number of CPU cores to use for big merges. Default value is used if set to 0")
 	smallMergeConcurrency = flag.Int("smallMergeConcurrency", 0, "The maximum number of CPU cores to use for small merges. Default value is used if set to 0")
+	minScrapeInterval     = flag.Duration("dedup.minScrapeInterval", 0, "Remove superflouos samples from time series if they are located closer to each other than this duration. "+
+		"This may be useful for reducing overhead when multiple identically configured Prometheus instances write data to the same VictoriaMetrics. "+
+		"Deduplication is disabled if the -dedup.minScrapeInterval is 0")
 )
 
 func main() {
@@ -35,6 +38,7 @@ func main() {
 	buildinfo.Init()
 	logger.Init()
 
+	storage.SetMinScrapeIntervalForDeduplication(*minScrapeInterval)
 	storage.SetBigMergeWorkersCount(*bigMergeConcurrency)
 	storage.SetSmallMergeWorkersCount(*smallMergeConcurrency)
 

lib/storage/dedup.go

@@ -1,14 +1,21 @@
 package storage
 
 import (
-	"flag"
+	"time"
 
 	"github.com/VictoriaMetrics/metrics"
 )
 
-var minScrapeInterval = flag.Duration("dedup.minScrapeInterval", 0, "Remove superflouos samples from time series if they are located closer to each other than this duration. "+
+// SetMinScrapeIntervalForDeduplication sets the minimum interval for data points during de-duplication.
-	"This may be useful for reducing overhead when multiple identically configured Prometheus instances write data to the same VictoriaMetrics. "+
+//
-	"Deduplication is disabled if the -dedup.minScrapeInterval is 0")
+// De-duplication is disabled if interval is 0.
+//
+// This function must be called before initializing the storage.
+func SetMinScrapeIntervalForDeduplication(interval time.Duration) {
+	minScrapeInterval = interval
+}
+
+var minScrapeInterval = time.Duration(0)
 
 func getMinDelta() int64 {
 	// Divide minScrapeInterval by 2 in order to preserve proper data points.
@@ -23,7 +30,7 @@ func getMinDelta() int64 {
 
 // DeduplicateSamples removes samples from src* if they are closer to each other than minScrapeInterval.
 func DeduplicateSamples(srcTimestamps []int64, srcValues []float64) ([]int64, []float64) {
-	if *minScrapeInterval <= 0 {
+	if minScrapeInterval <= 0 {
 		return srcTimestamps, srcValues
 	}
 	minDelta := getMinDelta()
@@ -54,7 +61,7 @@ func DeduplicateSamples(srcTimestamps []int64, srcValues []float64) ([]int64, []
 var dedupsDuringSelect = metrics.NewCounter(`deduplicated_samples_total{type="select"}`)
 
 func deduplicateSamplesDuringMerge(srcTimestamps []int64, srcValues []int64) ([]int64, []int64) {
-	if *minScrapeInterval <= 0 {
+	if minScrapeInterval <= 0 {
 		return srcTimestamps, srcValues
 	}
 	if len(srcTimestamps) < 32 {