Use simple8b.CountBytes to avoid allocations

Godeps

@@ -10,7 +10,7 @@ github.com/dgryski/go-bitstream 7d46cd22db7004f0cceb6f7975824b560cf0e486
 github.com/gogo/protobuf a9cd0c35b97daf74d0ebf3514c5254814b2703b4
 github.com/golang/snappy d9eb7a3d35ec988b8585d4a0068e462c27d28380
 github.com/influxdata/usage-client 6d3895376368aa52a3a81d2a16e90f0f52371967
-github.com/jwilder/encoding 4dada27c33277820fe35c7ee71ed34fbc9477d00
+github.com/jwilder/encoding 27894731927e49b0a9023f00312be26733744815
 github.com/paulbellamy/ratecounter 5a11f585a31379765c190c033b6ad39956584447
 github.com/peterh/liner 8975875355a81d612fafb9f5a6037bdcc2d9b073
 github.com/rakyll/statik e383bbf6b2ec1a2fb8492dfd152d945fb88919b6

tsdb/engine/tsm1/timestamp.go

@@ -390,13 +390,8 @@ func CountTimestamps(b []byte) int {
 		return int(count)
 	case timeCompressedPackedSimple:
 		// First 9 bytes are the starting timestamp and scaling factor, skip over them
-		dec := simple8b.NewDecoder(b[9:])
-		count := 1
-		// Count the deltas
-		for dec.Next() {
-			count++
-		}
-		return count
+		count, _ := simple8b.CountBytes(b[9:])
+		return count + 1 // +1 is for the first uncompressed timestamp, starting timestamep in b[1:9]
 	default:
 		return 0
 	}