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metrics.go
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metrics.go
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package phlaredb
import (
"context"
"github.com/prometheus/client_golang/prometheus"
phlarecontext "github.com/grafana/pyroscope/pkg/phlare/context"
"github.com/grafana/pyroscope/pkg/phlaredb/query"
"github.com/grafana/pyroscope/pkg/util"
)
type contextKey uint8
const (
headMetricsContextKey contextKey = iota
blockMetricsContextKey
)
type headMetrics struct {
series prometheus.Gauge
seriesCreated *prometheus.CounterVec
profiles prometheus.Gauge
profilesCreated *prometheus.CounterVec
sizeBytes *prometheus.GaugeVec
rowsWritten *prometheus.CounterVec
sampleValuesIngested *prometheus.CounterVec
sampleValuesReceived *prometheus.CounterVec
samples prometheus.Gauge
flushedFileSizeBytes *prometheus.HistogramVec
flushedBlockSizeBytes prometheus.Histogram
flushedBlockDurationSeconds prometheus.Histogram
flushedBlockSeries prometheus.Histogram
flushedBlockSamples prometheus.Histogram
flusehdBlockProfiles prometheus.Histogram
blockDurationSeconds prometheus.Histogram
flushedBlocks *prometheus.CounterVec
flushedBlocksReasons *prometheus.CounterVec
writtenProfileSegments *prometheus.CounterVec
writtenProfileSegmentsBytes prometheus.Histogram
}
func newHeadMetrics(reg prometheus.Registerer) *headMetrics {
m := &headMetrics{
seriesCreated: prometheus.NewCounterVec(prometheus.CounterOpts{
Name: "pyroscope_tsdb_head_series_created_total",
Help: "Total number of series created in the head",
}, []string{"profile_name"}),
rowsWritten: prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: "pyroscope_rows_written",
Help: "Number of rows written to a parquet table.",
},
[]string{"type"}),
profilesCreated: prometheus.NewCounterVec(prometheus.CounterOpts{
Name: "pyroscope_head_profiles_created_total",
Help: "Total number of profiles created in the head",
}, []string{"profile_name"}),
sampleValuesIngested: prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: "pyroscope_head_ingested_sample_values_total",
Help: "Number of sample values ingested into the head per profile type.",
},
[]string{"profile_name"}),
sampleValuesReceived: prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: "pyroscope_head_received_sample_values_total",
Help: "Number of sample values received into the head per profile type.",
},
[]string{"profile_name"}),
sizeBytes: prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Name: "pyroscope_head_size_bytes",
Help: "Size of a particular in memory store within the head phlaredb block.",
},
[]string{"type"}),
series: prometheus.NewGauge(prometheus.GaugeOpts{
Name: "pyroscope_tsdb_head_series",
Help: "Total number of series in the head block.",
}),
profiles: prometheus.NewGauge(prometheus.GaugeOpts{
Name: "pyroscope_head_profiles",
Help: "Total number of profiles in the head block.",
}),
flushedFileSizeBytes: prometheus.NewHistogramVec(prometheus.HistogramOpts{
Name: "pyroscope_head_flushed_table_size_bytes",
Help: "Size of a flushed table in bytes.",
// [2MB, 4MB, 8MB, 16MB, 32MB, 64MB, 128MB, 256MB, 512MB, 1GB, 2GB]
Buckets: prometheus.ExponentialBuckets(2*1024*1024, 2, 11),
}, []string{"name"}),
flushedBlockSizeBytes: prometheus.NewHistogram(prometheus.HistogramOpts{
Name: "pyroscope_head_flushed_block_size_bytes",
Help: "Size of a flushed block in bytes.",
// [50MB, 75MB, 112.5MB, 168.75MB, 253.125MB, 379.688MB, 569.532MB, 854.298MB, 1.281MB, 1.922MB, 2.883MB]
Buckets: prometheus.ExponentialBuckets(50*1024*1024, 1.5, 11),
}),
flushedBlockDurationSeconds: prometheus.NewHistogram(prometheus.HistogramOpts{
Name: "pyroscope_head_flushed_block_duration_seconds",
Help: "Time to flushed a block in seconds.",
// [5s, 7.5s, 11.25s, 16.875s, 25.3125s, 37.96875s, 56.953125s, 85.4296875s, 128.14453125s, 192.216796875s]
Buckets: prometheus.ExponentialBuckets(5, 1.5, 10),
}),
flushedBlockSeries: prometheus.NewHistogram(prometheus.HistogramOpts{
Name: "pyroscope_head_flushed_block_series",
Help: "Number of series in a flushed block.",
// [1k, 3k, 5k, 7k, 9k, 11k, 13k, 15k, 17k, 19k]
Buckets: prometheus.LinearBuckets(1000, 2000, 10),
}),
flushedBlockSamples: prometheus.NewHistogram(prometheus.HistogramOpts{
Name: "pyroscope_head_flushed_block_samples",
Help: "Number of samples in a flushed block.",
// [200k, 400k, 800k, 1.6M, 3.2M, 6.4M, 12.8M, 25.6M, 51.2M, 102.4M, 204.8M, 409.6M, 819.2M, 1.6384G, 3.2768G]
Buckets: prometheus.ExponentialBuckets(200_000, 2, 15),
}),
flusehdBlockProfiles: prometheus.NewHistogram(prometheus.HistogramOpts{
Name: "pyroscope_head_flushed_block_profiles",
Help: "Number of profiles in a flushed block.",
// [20k, 40k, 80k, 160k, 320k, 640k, 1.28M, 2.56M, 5.12M, 10.24M]
Buckets: prometheus.ExponentialBuckets(20_000, 2, 10),
}),
blockDurationSeconds: prometheus.NewHistogram(prometheus.HistogramOpts{
Name: "pyroscope_head_block_duration_seconds",
Help: "Duration of a block in seconds (the range it covers).",
// [20m, 40m, 1h, 1h20, 1h40, 2h, 2h20, 2h40, 3h, 3h20, 3h40, 4h, 4h20, 4h40, 5h, 5h20, 5h40, 6h, 6h20, 6h40, 7h, 7h20, 7h40, 8h]
Buckets: prometheus.LinearBuckets(1200, 1200, 24),
}),
flushedBlocks: prometheus.NewCounterVec(prometheus.CounterOpts{
Name: "pyroscope_head_flushed_blocks_total",
Help: "Total number of blocks flushed.",
}, []string{"status"}),
flushedBlocksReasons: prometheus.NewCounterVec(prometheus.CounterOpts{
Name: "pyroscope_head_flushed_reason_total",
Help: "Total count of reasons why block has been flushed.",
}, []string{"reason"}),
writtenProfileSegments: prometheus.NewCounterVec(prometheus.CounterOpts{
Name: "pyroscope_head_written_profile_segments_total",
Help: "Total number and status of profile row groups segments written.",
}, []string{"status"}),
writtenProfileSegmentsBytes: prometheus.NewHistogram(prometheus.HistogramOpts{
Name: "pyroscope_head_written_profile_segments_size_bytes",
Help: "Size of a flushed table in bytes.",
// [512KB, 1MB, 2MB, 4MB, 8MB, 16MB, 32MB, 64MB, 128MB, 256MB, 512MB]
Buckets: prometheus.ExponentialBuckets(512*1024, 2, 11),
}),
samples: prometheus.NewGauge(prometheus.GaugeOpts{
Name: "pyroscope_head_samples",
Help: "Number of samples in the head.",
}),
}
m.register(reg)
return m
}
func (m *headMetrics) register(reg prometheus.Registerer) {
if reg == nil {
return
}
m.series = util.RegisterOrGet(reg, m.series)
m.seriesCreated = util.RegisterOrGet(reg, m.seriesCreated)
m.profiles = util.RegisterOrGet(reg, m.profiles)
m.profilesCreated = util.RegisterOrGet(reg, m.profilesCreated)
m.sizeBytes = util.RegisterOrGet(reg, m.sizeBytes)
m.rowsWritten = util.RegisterOrGet(reg, m.rowsWritten)
m.sampleValuesIngested = util.RegisterOrGet(reg, m.sampleValuesIngested)
m.sampleValuesReceived = util.RegisterOrGet(reg, m.sampleValuesReceived)
m.flushedFileSizeBytes = util.RegisterOrGet(reg, m.flushedFileSizeBytes)
m.flushedBlockSizeBytes = util.RegisterOrGet(reg, m.flushedBlockSizeBytes)
m.flushedBlockDurationSeconds = util.RegisterOrGet(reg, m.flushedBlockDurationSeconds)
m.flushedBlockSeries = util.RegisterOrGet(reg, m.flushedBlockSeries)
m.flushedBlockSamples = util.RegisterOrGet(reg, m.flushedBlockSamples)
m.flusehdBlockProfiles = util.RegisterOrGet(reg, m.flusehdBlockProfiles)
m.blockDurationSeconds = util.RegisterOrGet(reg, m.blockDurationSeconds)
m.flushedBlocks = util.RegisterOrGet(reg, m.flushedBlocks)
m.flushedBlocksReasons = util.RegisterOrGet(reg, m.flushedBlocksReasons)
m.writtenProfileSegments = util.RegisterOrGet(reg, m.writtenProfileSegments)
m.writtenProfileSegmentsBytes = util.RegisterOrGet(reg, m.writtenProfileSegmentsBytes)
}
func contextWithHeadMetrics(ctx context.Context, m *headMetrics) context.Context {
return context.WithValue(ctx, headMetricsContextKey, m)
}
func contextHeadMetrics(ctx context.Context) *headMetrics {
m, ok := ctx.Value(headMetricsContextKey).(*headMetrics)
if !ok {
return newHeadMetrics(phlarecontext.Registry(ctx))
}
return m
}
type blocksMetrics struct {
query *query.Metrics
blockOpeningLatency prometheus.Histogram
blockOpened prometheus.Gauge
}
func newBlocksMetrics(reg prometheus.Registerer) *blocksMetrics {
m := &blocksMetrics{
query: query.NewMetrics(reg),
blockOpeningLatency: prometheus.NewHistogram(prometheus.HistogramOpts{
Name: "pyroscopedb_block_opening_duration",
Help: "Latency of opening a block in seconds",
}),
blockOpened: prometheus.NewGauge(prometheus.GaugeOpts{
Name: "pyroscopedb_blocks_currently_open",
Help: "Number of blocks opened",
}),
}
m.blockOpeningLatency = util.RegisterOrGet(reg, m.blockOpeningLatency)
m.blockOpened = util.RegisterOrGet(reg, m.blockOpened)
return m
}
func contextWithBlockMetrics(ctx context.Context, m *blocksMetrics) context.Context {
return context.WithValue(ctx, blockMetricsContextKey, m)
}
func contextBlockMetrics(ctx context.Context) *blocksMetrics {
m, ok := ctx.Value(blockMetricsContextKey).(*blocksMetrics)
if !ok {
return newBlocksMetrics(phlarecontext.Registry(ctx))
}
return m
}