diff --git a/main.go b/main.go
index 658b3ef..3ad1d7b 100644
--- a/main.go
+++ b/main.go
@@ -12,7 +12,7 @@ import (
 )
 
 const (
-	_Version  = "v2.2.1"
+	_Version  = "v2.2.2"
 	_Producer = 0
 	_Consumer = 1
 )
@@ -55,10 +55,6 @@ func main() {
 
 	log.SetOutput(fs)
 
-	pid.PIDFile = opts.Pidfile
-	pid.Write(true)
-	defer pid.Remove()
-
 	start = time.Now()
 	fmt.Printf("Start: %+v\n\t%+v\n", opts, dbs)
 	log.Printf("Start: %+v\n\t%+v\n", opts, dbs)
diff --git a/options.go b/options.go
index 0711c55..cd65620 100644
--- a/options.go
+++ b/options.go
@@ -24,7 +24,6 @@ type Options struct {
 	Version     bool
 	MaxBulk     int
 	Month       string
-	Pidfile     string
 	Queue       int
 }
 
@@ -44,7 +43,6 @@ func usage() {
 		-i <influxdb [localname@ip:port]>	
 		-l <logfile> 
 		-T <running ttl> 
-		-p <pid filename> 
 		-M <bulk size> 
 		-q <num consumer> 
 		-v`)
@@ -60,7 +58,6 @@ func init() {
 	}
 
 	opts.LogFile = path.Join(opts.CurrentPath, opts.LogFile)
-	opts.Pidfile = path.Join(opts.CurrentPath, "run", path.Base(os.Args[0])+".pid")
 	opts.Exe = path.Base(os.Args[0])
 
 	flag.StringVar(&dbs.MongoURI, "m", "", "Mongodb")
@@ -73,7 +70,6 @@ func init() {
 	flag.DurationVar(&opts.Timeout, "T", 0, "Running timeout")
 	flag.BoolVar(&opts.Debug, "D", false, "Debug")
 	flag.BoolVar(&opts.Test, "DD", false, "Test")
-	flag.IntVar(&opts.MaxBulk, "M", 1000, "Max Mongodb bulk")
+	flag.IntVar(&opts.MaxBulk, "M", 500, "Max Mongodb bulk")
 	flag.IntVar(&opts.Queue, "q", 2, "parallel consumer")
-	flag.StringVar(&opts.Pidfile, "p", opts.Pidfile, "pid file")
 }