// SetLimits raises some process limits to values which allow dcrd and
// associated utilities to run.
func SetLimits() error {
var rLimit syscall.Rlimit
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
return err
}
if rLimit.Cur > fileLimitWant {
return nil
}
if rLimit.Max < fileLimitMin {
err = fmt.Errorf("need at least %v file descriptors",
fileLimitMin)
return err
}
if rLimit.Max < fileLimitWant {
rLimit.Cur = rLimit.Max
} else {
rLimit.Cur = fileLimitWant
}
err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
// try min value
rLimit.Cur = fileLimitMin
err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
return err
}
}
return nil
}
func checkAndSetUlimit() error {
var rLimit syscall.Rlimit
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
return fmt.Errorf("error getting rlimit: %s", err)
}
ipfsFileDescNum := int64(ipfsFileDescNum)
var setting bool
if rLimit.Cur < ipfsFileDescNum {
if rLimit.Max < ipfsFileDescNum {
log.Error("adjusting max")
rLimit.Max = ipfsFileDescNum
}
fmt.Printf("Adjusting current ulimit to %d...\n", ipfsFileDescNum)
rLimit.Cur = ipfsFileDescNum
setting = true
}
err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
return fmt.Errorf("error setting ulimit: %s", err)
}
if setting {
fmt.Printf("Successfully raised file descriptor limit to %d.\n", ipfsFileDescNum)
}
return nil
}
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
os.Setenv("GOTRACEBACK", "crash")
lim := syscall.Rlimit{}
syscall.Getrlimit(syscall.RLIMIT_NOFILE, &lim)
if lim.Cur < _MaxOpenfile || lim.Max < _MaxOpenfile {
lim.Cur = _MaxOpenfile
lim.Max = _MaxOpenfile
syscall.Setrlimit(syscall.RLIMIT_NOFILE, &lim)
}
ln, err := net.Listen("tcp", ":1153")
if err != nil {
log.Fatal(err)
}
go TCPServer(ln, queryTypeDNS)
ln, err = net.Listen("tcp", ":1154")
if err != nil {
log.Fatal(err)
}
go TCPServer(ln, queryTypeMYIP)
http.HandleFunc("/myip", HTTPServerMYIP)
http.HandleFunc("/dns", HTTPServerDNS)
http.HandleFunc("/health", HTTPServerHealth)
log.Fatal(http.ListenAndServe(":1053", nil))
}
// raiseFdLimit tries to maximize the file descriptor allowance of this process
// to the maximum hard-limit allowed by the OS.
func raiseFdLimit(max uint64) error {
// Get the current limit
var limit syscall.Rlimit
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
return err
}
// Try to update the limit to the max allowance
limit.Cur = limit.Max
if limit.Cur > max {
limit.Cur = max
}
if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
return err
}
return nil
}
func TestMain(m *testing.M) {
var lim syscall.Rlimit
syscall.Getrlimit(syscall.RLIMIT_NOFILE, &lim)
lim.Cur = 1024000
lim.Max = 1024000
syscall.Setrlimit(syscall.RLIMIT_NOFILE, &lim)
}
// MaximizeOpenFileLimit tries to set the resource limit RLIMIT_NOFILE (number
// of open file descriptors) to the max (hard limit), if the current (soft
// limit) is below the max. Returns the new (though possibly unchanged) limit,
// or an error if it could not be changed.
func MaximizeOpenFileLimit() (int, error) {
// Get the current limit on number of open files.
var lim syscall.Rlimit
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &lim); err != nil {
return 0, err
}
// If we're already at max, there's no need to try to raise the limit.
if lim.Cur >= lim.Max {
return int(lim.Cur), nil
}
// Try to increase the limit to the max.
oldLimit := lim.Cur
lim.Cur = lim.Max
if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &lim); err != nil {
return int(oldLimit), err
}
// If the set succeeded, perform a new get to see what happened. We might
// have gotten a value lower than the one in lim.Max, if lim.Max was
// something that indicated "unlimited" (i.e. intmax).
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &lim); err != nil {
// We don't really know the correct value here since Getrlimit
// mysteriously failed after working once... Shouldn't ever happen, I
// think.
return 0, err
}
return int(lim.Cur), nil
}
func main() {
var rlim syscall.Rlimit
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlim)
if err != nil {
fmt.Errorf("获取Rlimit报错 %s", err)
os.Exit(1)
}
fmt.Printf("ENV RLIMIT_NOFILE : %+v\n", rlim)
rlim.Max = 65535
rlim.Cur = 65535
//err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rlim)
err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rlim)
if err != nil {
fmt.Errorf("设置Rlimit报错 %s", err)
os.Exit(1)
}
//fmt.Printf("ENV RLIMIT_NOFILE : %+v\n", rlim)
err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlim)
if err != nil {
fmt.Errorf("获取Rlimit报错 %s", err)
os.Exit(1)
}
fmt.Printf("ENV RLIMIT_NOFILE : %+v\n", rlim)
}
// setOpenFilesLimit sets the open file limit in the kernel
// cur is the soft limit, max is the ceiling (or hard limit) for that limit
func (pm *ProcessManager) setOpenFilesLimit(cur, max uint64) error {
var rLimit syscall.Rlimit
// First check if the limits are already what we want
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
return err
}
// If the current values are less than we want, set them
if rLimit.Cur < cur || rLimit.Max < max {
if cur > rLimit.Cur {
rLimit.Cur = cur
}
if max > rLimit.Max {
rLimit.Max = max
}
log.Infof("Setting open files limit (soft, hard) to (%v, %v)", rLimit.Cur, rLimit.Max)
err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
return err
}
}
return nil
}
func TestGetSoftFDLimitWithCurrent(t *testing.T) {
requestedSoftFDLimit := uint64(1024)
currentSoftFdLimit := uint64(2048)
currentHardFdLimit := uint64(4096)
limit := syscall.Rlimit{
Cur: currentSoftFdLimit,
Max: currentHardFdLimit,
}
requiresUpdate, softFDLimit := getSoftFDLimit(
requestedSoftFDLimit,
limit,
)
assert.False(t, requiresUpdate)
limit.Cur = uint64(512)
requiresUpdate, softFDLimit = getSoftFDLimit(
requestedSoftFDLimit,
limit,
)
assert.True(t, requiresUpdate)
assert.Equals(t, softFDLimit, requestedSoftFDLimit)
}
// Set Max File Descriptor limits
//
// Background information:
//
// - SG docs
// http://developer.couchbase.com/documentation/mobile/1.1.0/develop/guides/sync-gateway/os-level-tuning/max-file-descriptors/index.html
// - Related SG issues
// https://github.com/couchbase/sync_gateway/issues/1083
// - Hard limit vs Soft limit
// http://unix.stackexchange.com/questions/29577/ulimit-difference-between-hard-and-soft-limits
func SetMaxFileDescriptors(requestedSoftFDLimit uint64) (uint64, error) {
var limits syscall.Rlimit
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limits); err != nil {
return 0, err
}
requiresUpdate, recommendedSoftFDLimit := getSoftFDLimit(
requestedSoftFDLimit,
limits,
)
// No call to Setrlimit required, because the requested soft limit is lower than current soft limit
if !requiresUpdate {
return 0, nil
}
// Update the soft limit (but don't bother updating the hard limit, since only root can do that,
// and it's assumed that this process is not running as root)
limits.Cur = recommendedSoftFDLimit
err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &limits)
if err == nil {
Logf("Configured process to allow %d open file descriptors", recommendedSoftFDLimit)
}
return recommendedSoftFDLimit, err
}
// upLimitToHard ups a resource limit identified
// by the resource argument to it's hard limit
// the returned error is either from syscall.(Get|Set)rlimit
func upLimitToHard(resource int) error {
var resLimit = new(syscall.Rlimit)
if err := syscall.Getrlimit(resource, resLimit); err != nil {
return err
}
resLimit.Cur = resLimit.Max
return syscall.Setrlimit(resource, resLimit)
}
func initLimit() {
var rLimit syscall.Rlimit
rLimit.Max = 10000
rLimit.Cur = 10000
err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
fmt.Println("Error Setting Rlimit ", err)
}
}
func main() {
log.Println("livesyncd running")
log.Println("Stop with [CTRL] + [c]")
log.Println("Ignore: ", config.Ignore)
rlimit := new(syscall.Rlimit)
syscall.Getrlimit(syscall.RLIMIT_NOFILE, rlimit)
rlimit.Cur = rlimit.Max
err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, rlimit)
if err != nil {
log.Panicf("Could not change Rlimit: %q", err)
}
watcher, err := fsnotify.NewWatcher()
if err != nil {
log.Panicln(err)
}
events := make(chan *SyncEvent)
quitSync := make(chan bool)
quitWatcher := make(chan bool)
sigInt := make(chan os.Signal)
signal.Notify(sigInt, os.Interrupt)
StartSFTPSync(events, quitSync, config)
startWatchLoop(events, quitWatcher, watcher)
watched := addWatchesRecursive(root, watcher)
log.Printf("Found %d directories to watch\n", watched)
select {
case <-sigInt:
log.Println("Stopping to watch...")
// Wait until the watcher has finished quitting
quitWatcher <- true
log.Println("Done")
// Close all file handles, opened by the watcher
watcher.Close()
log.Println("Stopping Sync Backend...")
quitSync <- true
<-quitSync
log.Println("Done")
return
}
}
func init() {
var rLimit syscall.Rlimit
rLimit.Max = 4096
rLimit.Cur = 4096
err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
log.Println("Warning: setrlimit:", err)
}
}
// 提升程序可打开的文件描述符上限
func init() {
var rlim syscall.Rlimit
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlim); err != nil {
panic(err.Error())
}
rlim.Cur = 1000000
rlim.Max = 1000000
if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rlim); err != nil {
panic(err.Error())
}
}
func NewServer() *Server {
s := &Server{
port: common.GetConfInt("server", "port", 8080),
maxClients: common.GetConfInt("server", "max_clients", 100000),
clientNum: 0,
acceptTimeout: common.GetConfSecond("server", "accept_timeout", 60*5),
connTimeout: common.GetConfSecond("server", "connection_timeout", 60*3),
headerLen: common.GetConfInt("server", "header_length", 10),
maxBodyLen: common.GetConfInt("server", "max_body_length", 102400),
running: false,
heartbeat: time.Now().Unix(),
workerNum: common.WorkerNum,
currentWorker: -1,
slowread: common.GetConfSecond("server", "slow_read", 0),
logger: common.NewLogger("server"),
}
if s == nil {
fmt.Println("new server failed")
return nil
}
if s.logger == nil {
fmt.Println("new server logger failed")
return nil
}
ip, err := common.Conf.String("server", "bind")
if err != nil {
ip = ""
}
s.ip = ip
max_clients := uint64(s.maxClients)
if max_clients > 1024 {
var rlim syscall.Rlimit
err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlim)
if err != nil {
fmt.Println("server get rlimit error: " + err.Error())
return nil
}
rlim.Cur = max_clients
rlim.Max = max_clients
err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rlim)
if err != nil {
fmt.Println("server set rlimit error: " + err.Error())
return nil
}
s.logger.Info("set fd limit to %d", s.maxClients)
}
return s
}
// For all unixes we need to bump allowed number of open files to a
// higher value than its usual default of '1024'. The reasoning is
// that this value is too small for a server.
func setMaxOpenFiles() error {
var rLimit syscall.Rlimit
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
return err
}
// Set the current limit to Max, it is usually around 4096.
// TO increase this limit further user has to manually edit
// `/etc/security/limits.conf`
rLimit.Cur = rLimit.Max
return syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
}
func main() {
logging.SetFormatter(logging.MustStringFormatter(format))
logging.SetLevel(logging.INFO, "gogorobot")
//logging.SetLevel(logging.DEBUG, "gogorobot")
//
// Set the file descriptor limit higher if we've permission
var rLimit syscall.Rlimit
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
log.Info(fmt.Sprintf("Error geting rlimit: %s", err))
}
rLimit.Max = 65536
rLimit.Cur = 65536
err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
log.Info(fmt.Sprintf("Error setting rlimit: %s", err))
}
//
fetchPipeline := make(chan FetchRequest)
savePipeline := make(chan RobotResponse)
// NOTE: Important to pass via pointer
// Otherwise, a new WaitGroup is created
var fetchGroup sync.WaitGroup
var saveGroup sync.WaitGroup
saveGroup.Add(1)
go saveRobots(savePipeline, &saveGroup)
for i := 0; i < 50; i++ {
fetchGroup.Add(1)
go fetchRobot(fetchPipeline, savePipeline, &fetchGroup)
}
// Insert entries
reader := bufio.NewReader(os.Stdin)
for {
domain, err := reader.ReadString('\n')
if err != nil {
break
}
domain = strings.TrimRight(domain, "\r\n")
log.Debug(fmt.Sprintf("MAIN: Providing %s to fetch pipeline", domain))
fetchPipeline <- FetchRequest{domain, 0}
}
// TODO: Temporary fix to allow time for the pipeline to clear (see TODO in fetcher's error area)
time.Sleep(60 * time.Second)
close(fetchPipeline)
log.Notice("Fetching pipeline closed -- waiting for pending fetches to complete")
//
fetchGroup.Wait()
close(savePipeline)
saveGroup.Wait()
}
func getMaxOpenFiles() int {
var rlim syscall.Rlimit
var err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlim)
if err == nil && rlim.Cur < rlim.Max {
rlim.Cur = rlim.Max
syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rlim)
}
var maxOpenFiles = 1024
if maxOpenFiles < int(rlim.Cur) {
maxOpenFiles = int(rlim.Cur)
}
return maxOpenFiles
}
func init() {
var rLimit syscall.Rlimit
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
fmt.Println("Error Getting Rlimit ", err)
}
rLimit.Max = 999999
rLimit.Cur = 999999
err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
fmt.Println("Error Setting Rlimit ", err)
}
}
func SetRlimit() {
var rLimit syscall.Rlimit
rLimit.Max = 999999
rLimit.Cur = 999999
err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
panic(fmt.Sprintf("Error Setting Rlimit '%s'", err))
}
err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
panic(fmt.Sprintf("Error Getting Rlimit '%s'", err))
}
fmt.Printf("final: rlimit.Cur = %d, rlimit.Max = %d\n", rLimit.Cur, rLimit.Max)
}
func init() {
// Parse args
flag.StringVar(&Dirname, "directory", "outfiles", "Output directory for downloaded files")
flag.StringVar(&Artist, "artist", "", "Artist name if songs should be tagged by artist")
flag.StringVar(&Album, "album", "", "Album name if songs should be tagged by album")
flag.Parse()
// Check for command-line dependencies
for _, dependency := range []string{youtubeDl, ffmpeg} {
if _, err := exec.LookPath(dependency); err != nil {
log.Fatalf("Must have %s in your PATH", dependency)
}
}
// Make output directory
if err := os.Mkdir(Dirname, 0777); err != nil && !os.IsExist(err) {
log.Fatal("Could not make directory", Dirname, "for output files")
}
// @hack - Increase file descriptor limt
const PLAYLIST_SIZE_LIMIT, SUBPROCS_PER_VIDEO = 200, 2
// max size of YouTubePlaylist, subprocesses needed to download and convert video
fdLimit := new(syscall.Rlimit)
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, fdLimit)
fdLimit.Cur += PLAYLIST_SIZE_LIMIT * SUBPROCS_PER_VIDEO
err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, fdLimit)
if err != nil {
log.Fatal(err.Error())
}
// Unpack configuration
type config struct {
GoogleAPIKey string `json:"google_api_key"`
}
configJson, err := ioutil.ReadFile("config.json")
if err != nil {
// config.json missing
log.Fatal("Must have config.json file to run")
}
conf := new(config)
err = json.Unmarshal(configJson, conf)
if err != nil {
// unmarshal error
log.Fatal("config.json is formatted incorrectly")
}
if googleAPIKey = conf.GoogleAPIKey; googleAPIKey == "" {
// google_api_key missing from config
log.Fatal("Google API Key is missing from config.json")
}
}
func MaybeBecomeChildProcess() {
lrs := os.Getenv("_RUNSIT_LAUNCH_INFO")
if lrs == "" {
return
}
defer os.Exit(2) // should never make it this far, though
lr := new(LaunchRequest)
d := gob.NewDecoder(base64.NewDecoder(base64.StdEncoding, strings.NewReader(lrs)))
err := d.Decode(lr)
if err != nil {
log.Fatalf("Failed to decode LaunchRequest in child: %v", err)
}
if lr.NumFiles != 0 {
var lim syscall.Rlimit
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &lim); err != nil {
log.Fatalf("failed to get NOFILE rlimit: %v", err)
}
noFile := rlim_t(lr.NumFiles)
lim.Cur = noFile
lim.Max = noFile
if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &lim); err != nil {
log.Fatalf("failed to set NOFILE rlimit: %v", err)
}
}
if lr.Gid != 0 {
if err := syscall.Setgid(lr.Gid); err != nil {
log.Fatalf("failed to Setgid(%d): %v", lr.Gid, err)
}
}
if len(lr.Gids) != 0 {
if err := syscall.Setgroups(lr.Gids); err != nil {
log.Printf("setgroups: %v", err)
}
}
if lr.Uid != 0 {
if err := syscall.Setuid(lr.Uid); err != nil {
log.Fatalf("failed to Setuid(%d): %v", lr.Uid, err)
}
}
if lr.Path != "" {
err = os.Chdir(lr.Dir)
if err != nil {
log.Fatalf("failed to chdir to %q: %v", lr.Dir, err)
}
}
err = syscall.Exec(lr.Path, lr.Argv, lr.Env)
log.Fatalf("failed to exec %q: %v", lr.Path, err)
}
func SetMaxFileDescriptors(maxFDs uint64) (uint64, error) {
var limits syscall.Rlimit
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limits); err != nil {
return maxFDs, err
}
if maxFDs > limits.Max {
maxFDs = limits.Max
}
if limits.Cur == maxFDs {
return maxFDs, nil
}
limits.Cur = maxFDs
limits.Max = maxFDs
return maxFDs, syscall.Setrlimit(syscall.RLIMIT_NOFILE, &limits)
}
func setRlimit() error {
var rLimit syscall.Rlimit
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
return fmt.Errorf("could not get Rlimit: %s", err)
}
rLimit.Max = 999999
rLimit.Cur = 999999
err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
return fmt.Errorf("could not set Rlimit: %s", err)
}
return nil
}
func checkLimits() error {
var l syscall.Rlimit
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &l); err != nil {
return err
}
if l.Cur <= minRlimit {
logrus.WithFields(logrus.Fields{
"current": l.Cur,
"max": l.Max,
}).Warn("containerd: low RLIMIT_NOFILE changing to max")
l.Cur = l.Max
return syscall.Setrlimit(syscall.RLIMIT_NOFILE, &l)
}
return nil
}
func tweakLimit() {
var rLimit syscall.Rlimit
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
jww.ERROR.Println("Unable to obtain rLimit", err)
}
if rLimit.Cur < rLimit.Max {
rLimit.Max = 999999
rLimit.Cur = 999999
err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
if err != nil {
jww.ERROR.Println("Unable to increase number of open files limit", err)
}
}
}
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
os.Setenv("GOTRACEBACK", "crash")
_BackendAddrCache.Store(make(backendAddrMap))
var lim syscall.Rlimit
syscall.Getrlimit(syscall.RLIMIT_NOFILE, &lim)
if lim.Cur < _MaxOpenfile || lim.Max < _MaxOpenfile {
lim.Cur = _MaxOpenfile
lim.Max = _MaxOpenfile
syscall.Setrlimit(syscall.RLIMIT_NOFILE, &lim)
}
_SecretPassphase = []byte(os.Getenv("SECRET"))
mhs, err := strconv.Atoi(os.Getenv("MAX_HTTP_HEADER_SIZE"))
if err == nil && mhs > _minHTTPHeaderSize {
_maxHTTPHeaderSize = mhs
}
bt, err := strconv.Atoi(os.Getenv("BACKEND_TIMEOUT"))
if err == nil && bt > 0 {
_BackendDialTimeout = bt
}
connReadTimeout, err := strconv.Atoi(os.Getenv("CONN_READ_TIMEOUT"))
if err == nil && connReadTimeout >= 0 {
_ConnReadTimeout = time.Second * time.Duration(connReadTimeout)
}
listenPort, err := strconv.Atoi(os.Getenv("LISTEN_PORT"))
if err == nil && listenPort > 0 && listenPort <= 65535 {
_DefaultPort = listenPort
}
pprofPort, err := strconv.Atoi(os.Getenv("PPROF_PORT"))
if err == nil && pprofPort > 0 && pprofPort <= 65535 {
go func() {
log.Println(http.ListenAndServe(":"+strconv.Itoa(pprofPort), nil))
}()
}
listenAndServe()
log.Println("Exiting")
}
func init() {
runtime.GOMAXPROCS(runtime.NumCPU())
os.Setenv("GOTRACEBACK", "crash")
lim := syscall.Rlimit{}
syscall.Getrlimit(syscall.RLIMIT_NOFILE, &lim)
if lim.Cur < MaxOpenfile || lim.Max < MaxOpenfile {
lim.Cur = MaxOpenfile
lim.Max = MaxOpenfile
syscall.Setrlimit(syscall.RLIMIT_NOFILE, &lim)
}
log.SetOutput(io.Writer(os.Stderr))
log.SetFlags(log.Ldate | log.Lmicroseconds | log.Lshortfile)
pid2file()
}
func setUlimit(cfg *Config) error {
var rLimit syscall.Rlimit
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit); err != nil {
return err
}
if cfg.NoFiles == 0 {
rLimit.Max = 1000000
} else {
rLimit.Max = cfg.NoFiles
}
rLimit.Cur = rLimit.Max
return syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
}