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|
package statsengine
import (
"cmp"
"slices"
"time"
"ior/internal/event"
"ior/internal/types"
)
type familyAccumulator struct {
byFamily map[types.SyscallFamily]*familyStats
}
type familyStats struct {
family types.SyscallFamily
count uint64
errorCount uint64
totalBytes uint64
totalLatency uint64
minLatency uint64
maxLatency uint64
}
type familySnapshotInput struct {
family types.SyscallFamily
count uint64
errorCount uint64
totalBytes uint64
totalLatency uint64
minLatency uint64
maxLatency uint64
}
func newFamilyAccumulator() *familyAccumulator {
return &familyAccumulator{byFamily: make(map[types.SyscallFamily]*familyStats)}
}
func (a *familyAccumulator) Add(pair *event.Pair) {
if a == nil || pair == nil || pair.EnterEv == nil {
return
}
family := pair.EnterEv.GetTraceId().Family()
stats := a.byFamily[family]
if stats == nil {
stats = &familyStats{family: family}
a.byFamily[family] = stats
}
stats.count++
stats.totalBytes += pair.Bytes
stats.totalLatency += pair.Duration
stats.updateMinMax(pair.Duration)
if retEv, ok := pair.ExitEv.(*types.RetEvent); ok && retEv.Ret < 0 {
stats.errorCount++
}
}
func (a *familyAccumulator) AddAggregate(row SyscallAggregate) {
if a == nil || row.TraceID == 0 || row.Count == 0 {
return
}
family := row.TraceID.Family()
stats := a.byFamily[family]
if stats == nil {
stats = &familyStats{family: family}
a.byFamily[family] = stats
}
prevCount := stats.count
stats.count += row.Count
stats.errorCount += row.Errors
stats.totalLatency += row.TotalLatencyNs
if prevCount == 0 || row.MinLatencyNs < stats.minLatency {
stats.minLatency = row.MinLatencyNs
}
if row.MaxLatencyNs > stats.maxLatency {
stats.maxLatency = row.MaxLatencyNs
}
}
func (a *familyAccumulator) snapshotInputs() []familySnapshotInput {
if a == nil {
return nil
}
inputs := make([]familySnapshotInput, 0, len(a.byFamily))
for _, stats := range a.byFamily {
inputs = append(inputs, familySnapshotInput{
family: stats.family,
count: stats.count,
errorCount: stats.errorCount,
totalBytes: stats.totalBytes,
totalLatency: stats.totalLatency,
minLatency: stats.minLatency,
maxLatency: stats.maxLatency,
})
}
return inputs
}
func buildFamilySnapshots(inputs []familySnapshotInput, elapsed time.Duration) ([]FamilySnapshot, error) {
rateDiv := elapsed.Seconds()
result := make([]FamilySnapshot, 0, len(inputs))
for _, in := range inputs {
result = append(result, in.toSnapshot(rateDiv))
}
slices.SortFunc(result, compareFamilyDefault)
return result, nil
}
func (s *familyStats) updateMinMax(duration uint64) {
if s.count == 1 || duration < s.minLatency {
s.minLatency = duration
}
if duration > s.maxLatency {
s.maxLatency = duration
}
}
func (s familySnapshotInput) toSnapshot(rateDiv float64) FamilySnapshot {
return FamilySnapshot{
Family: s.family,
Name: string(s.family),
Count: s.count,
RatePerSec: safeRate(s.count, rateDiv),
Errors: s.errorCount,
Bytes: s.totalBytes,
LatencyMinNs: s.minLatency,
LatencyMaxNs: s.maxLatency,
LatencyMeanNs: float64(s.totalLatency) / float64(maxU64(s.count, 1)),
TotalLatencyNs: s.totalLatency,
}
}
func compareFamilyDefault(left, right FamilySnapshot) int {
if left.Count != right.Count {
return cmp.Compare(right.Count, left.Count)
}
return cmp.Compare(types.SyscallFamilyRank(left.Family), types.SyscallFamilyRank(right.Family))
}
|
