VictoriaMetrics/lib/persistentqueue/fastqueue_timing_test.go
Aliaksandr Valialkin 2f14394335
app/vmagent: follow-up for 090cb2c9de
- Add Try* prefix to functions, which return bool result in order to improve readability and reduce the probability of missing check
  for the result returned from these functions.

- Call the adjustSampleValues() only once on input samples. Previously it was called on every attempt to flush data to peristent queue.

- Properly restore the initial state of WriteRequest passed to tryPushWriteRequest() before returning from this function
  after unsuccessful push to persistent queue. Previously a part of WriteRequest samples may be lost in such case.

- Add -remoteWrite.dropSamplesOnOverload command-line flag, which can be used for dropping incoming samples instead
  of returning 429 Too Many Requests error to the client when -remoteWrite.disableOnDiskQueue is set and the remote storage
  cannot keep up with the data ingestion rate.

- Add vmagent_remotewrite_samples_dropped_total metric, which counts the number of dropped samples.

- Add vmagent_remotewrite_push_failures_total metric, which counts the number of unsuccessful attempts to push
  data to persistent queue when -remoteWrite.disableOnDiskQueue is set.

- Remove vmagent_remotewrite_aggregation_metrics_dropped_total and vm_promscrape_push_samples_dropped_total metrics,
  because they are replaced with vmagent_remotewrite_samples_dropped_total metric.

- Update 'Disabling on-disk persistence' docs at docs/vmagent.md

- Update stale comments in the code

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5088
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2110
2023-11-25 12:13:39 +02:00

69 lines
1.9 KiB
Go

package persistentqueue
import (
"fmt"
"testing"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/cgroup"
)
func BenchmarkFastQueueThroughputSerial(b *testing.B) {
const iterationsCount = 10
for _, blockSize := range []int{1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6} {
block := make([]byte, blockSize)
b.Run(fmt.Sprintf("block-size-%d", blockSize), func(b *testing.B) {
b.ReportAllocs()
b.SetBytes(int64(blockSize) * iterationsCount)
path := fmt.Sprintf("bench-fast-queue-throughput-serial-%d", blockSize)
mustDeleteDir(path)
fq := MustOpenFastQueue(path, "foobar", iterationsCount*2, 0, false)
defer func() {
fq.MustClose()
mustDeleteDir(path)
}()
for i := 0; i < b.N; i++ {
writeReadIterationFastQueue(fq, block, iterationsCount)
}
})
}
}
func BenchmarkFastQueueThroughputConcurrent(b *testing.B) {
const iterationsCount = 10
for _, blockSize := range []int{1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6} {
block := make([]byte, blockSize)
b.Run(fmt.Sprintf("block-size-%d", blockSize), func(b *testing.B) {
b.ReportAllocs()
b.SetBytes(int64(blockSize) * iterationsCount)
path := fmt.Sprintf("bench-fast-queue-throughput-concurrent-%d", blockSize)
mustDeleteDir(path)
fq := MustOpenFastQueue(path, "foobar", iterationsCount*cgroup.AvailableCPUs()*2, 0, false)
defer func() {
fq.MustClose()
mustDeleteDir(path)
}()
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
writeReadIterationFastQueue(fq, block, iterationsCount)
}
})
})
}
}
func writeReadIterationFastQueue(fq *FastQueue, block []byte, iterationsCount int) {
for i := 0; i < iterationsCount; i++ {
if !fq.TryWriteBlock(block) {
panic(fmt.Errorf("TryWriteBlock must return true"))
}
}
var ok bool
bb := bbPool.Get()
for i := 0; i < iterationsCount; i++ {
bb.B, ok = fq.MustReadBlock(bb.B[:0])
if !ok {
panic(fmt.Errorf("unexpected ok=false"))
}
}
bbPool.Put(bb)
}