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Add metrics emission surrounding boltdb performance (#26)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package raftboltdb | ||
|
|
||
| import ( | ||
| "context" | ||
| "time" | ||
|
|
||
| metrics "github.com/armon/go-metrics" | ||
| "github.com/boltdb/bolt" | ||
| ) | ||
|
|
||
| const ( | ||
| defaultMetricsInterval = 5 * time.Second | ||
| ) | ||
|
|
||
| // RunMetrics should be executed in a go routine and will periodically emit | ||
| // metrics on the given interval until the context has been cancelled. | ||
| func (b *BoltStore) RunMetrics(ctx context.Context, interval time.Duration) { | ||
| if interval == 0 { | ||
| interval = defaultMetricsInterval | ||
| } | ||
|
|
||
| tick := time.NewTicker(interval) | ||
| defer tick.Stop() | ||
|
|
||
| stats := b.emitMetrics(nil) | ||
| for { | ||
| select { | ||
| case <-ctx.Done(): | ||
| return | ||
| case <-tick.C: | ||
| stats = b.emitMetrics(stats) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (b *BoltStore) emitMetrics(prev *bolt.Stats) *bolt.Stats { | ||
| newStats := b.conn.Stats() | ||
|
|
||
| stats := newStats | ||
| if prev != nil { | ||
| stats = newStats.Sub(prev) | ||
| } | ||
|
|
||
| // freelist metrics | ||
| metrics.SetGauge([]string{"raft", "boltdb", "numFreePages"}, float32(newStats.FreePageN)) | ||
| metrics.SetGauge([]string{"raft", "boltdb", "numPendingPages"}, float32(newStats.PendingPageN)) | ||
| metrics.SetGauge([]string{"raft", "boltdb", "freePageBytes"}, float32(newStats.FreeAlloc)) | ||
| metrics.SetGauge([]string{"raft", "boltdb", "freelistBytes"}, float32(newStats.FreelistInuse)) | ||
|
|
||
| // txn metrics | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "totalReadTxn"}, float32(stats.TxN)) | ||
| metrics.SetGauge([]string{"raft", "boltdb", "openReadTxn"}, float32(newStats.OpenTxN)) | ||
|
|
||
| // tx stats | ||
| metrics.SetGauge([]string{"raft", "boltdb", "txstats", "pageCount"}, float32(newStats.TxStats.PageCount)) | ||
| metrics.SetGauge([]string{"raft", "boltdb", "txstats", "pageAlloc"}, float32(newStats.TxStats.PageAlloc)) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "cursorCount"}, float32(stats.TxStats.CursorCount)) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "nodeCount"}, float32(stats.TxStats.NodeCount)) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "nodeDeref"}, float32(stats.TxStats.NodeDeref)) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "rebalance"}, float32(stats.TxStats.Rebalance)) | ||
| metrics.AddSample([]string{"raft", "boltdb", "txstats", "rebalanceTime"}, float32(stats.TxStats.RebalanceTime.Nanoseconds())/1000000) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "split"}, float32(stats.TxStats.Split)) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "spill"}, float32(stats.TxStats.Spill)) | ||
| metrics.AddSample([]string{"raft", "boltdb", "txstats", "spillTime"}, float32(stats.TxStats.SpillTime.Nanoseconds())/1000000) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "write"}, float32(stats.TxStats.Write)) | ||
| metrics.AddSample([]string{"raft", "boltdb", "txstats", "writeTime"}, float32(stats.TxStats.WriteTime.Nanoseconds())/1000000) | ||
| return &newStats | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package raftboltdb | ||
|
|
||
| import ( | ||
| "context" | ||
| "time" | ||
|
|
||
| metrics "github.com/armon/go-metrics" | ||
| "go.etcd.io/bbolt" | ||
| ) | ||
|
|
||
| const ( | ||
| defaultMetricsInterval = 5 * time.Second | ||
| ) | ||
|
|
||
| // RunMetrics should be executed in a go routine and will periodically emit | ||
| // metrics on the given interval until the context has been cancelled. | ||
| func (b *BoltStore) RunMetrics(ctx context.Context, interval time.Duration) { | ||
| if interval == 0 { | ||
| interval = defaultMetricsInterval | ||
| } | ||
|
|
||
| tick := time.NewTicker(interval) | ||
| defer tick.Stop() | ||
|
|
||
| stats := b.emitMetrics(nil) | ||
| for { | ||
| select { | ||
| case <-ctx.Done(): | ||
| return | ||
| case <-tick.C: | ||
| stats = b.emitMetrics(stats) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (b *BoltStore) emitMetrics(prev *bbolt.Stats) *bbolt.Stats { | ||
| newStats := b.conn.Stats() | ||
|
|
||
| stats := newStats | ||
| if prev != nil { | ||
| stats = newStats.Sub(prev) | ||
| } | ||
|
|
||
| // freelist metrics | ||
| metrics.SetGauge([]string{"raft", "boltdb", "numFreePages"}, float32(newStats.FreePageN)) | ||
| metrics.SetGauge([]string{"raft", "boltdb", "numPendingPages"}, float32(newStats.PendingPageN)) | ||
| metrics.SetGauge([]string{"raft", "boltdb", "freePageBytes"}, float32(newStats.FreeAlloc)) | ||
| metrics.SetGauge([]string{"raft", "boltdb", "freelistBytes"}, float32(newStats.FreelistInuse)) | ||
|
|
||
| // txn metrics | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "totalReadTxn"}, float32(stats.TxN)) | ||
| metrics.SetGauge([]string{"raft", "boltdb", "openReadTxn"}, float32(newStats.OpenTxN)) | ||
|
|
||
| // tx stats | ||
| metrics.SetGauge([]string{"raft", "boltdb", "txstats", "pageCount"}, float32(newStats.TxStats.PageCount)) | ||
| metrics.SetGauge([]string{"raft", "boltdb", "txstats", "pageAlloc"}, float32(newStats.TxStats.PageAlloc)) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "cursorCount"}, float32(stats.TxStats.CursorCount)) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "nodeCount"}, float32(stats.TxStats.NodeCount)) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "nodeDeref"}, float32(stats.TxStats.NodeDeref)) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "rebalance"}, float32(stats.TxStats.Rebalance)) | ||
| metrics.AddSample([]string{"raft", "boltdb", "txstats", "rebalanceTime"}, float32(stats.TxStats.RebalanceTime.Nanoseconds())/1000000) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "split"}, float32(stats.TxStats.Split)) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "spill"}, float32(stats.TxStats.Spill)) | ||
| metrics.AddSample([]string{"raft", "boltdb", "txstats", "spillTime"}, float32(stats.TxStats.SpillTime.Nanoseconds())/1000000) | ||
| metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "write"}, float32(stats.TxStats.Write)) | ||
| metrics.AddSample([]string{"raft", "boltdb", "txstats", "writeTime"}, float32(stats.TxStats.WriteTime.Nanoseconds())/1000000) | ||
| return &newStats | ||
| } |