Beispiel #1
0
// 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
}
Beispiel #2
0
func TestRlimit(t *testing.T) {
	var rlimit, zero syscall.Rlimit
	err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlimit)
	if err != nil {
		t.Fatalf("Getrlimit: save failed: %v", err)
	}
	if zero == rlimit {
		t.Fatalf("Getrlimit: save failed: got zero value %#v", rlimit)
	}
	set := rlimit
	set.Cur = set.Max - 1
	err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &set)
	if err != nil {
		t.Fatalf("Setrlimit: set failed: %#v %v", set, err)
	}
	var get syscall.Rlimit
	err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &get)
	if err != nil {
		t.Fatalf("Getrlimit: get failed: %v", err)
	}
	set = rlimit
	set.Cur = set.Max - 1
	if set != get {
		t.Fatalf("Rlimit: change failed: wanted %#v got %#v", set, get)
	}
	err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rlimit)
	if err != nil {
		t.Fatalf("Setrlimit: restore failed: %#v %v", rlimit, err)
	}
}
Beispiel #3
0
func setResourceLimits() error {
	const maximumTimeInSeconds = 5
	limit := syscall.Rlimit{maximumTimeInSeconds, maximumTimeInSeconds}
	if err := syscall.Setrlimit(syscall.RLIMIT_CPU, &limit); err != nil {
		return err
	}
	const maximumMemoryInBytes = 1 << 28
	limit = syscall.Rlimit{maximumMemoryInBytes, maximumMemoryInBytes}
	return syscall.Setrlimit(syscall.RLIMIT_AS, &limit)
}
Beispiel #4
0
func registerSync(container, local, remote string) error {
	syscall.Setrlimit(syscall.RLIMIT_NOFILE, &syscall.Rlimit{
		Max: 999999,
		Cur: 999999,
	})

	abs, err := filepath.Abs(local)

	if err != nil {
		return err
	}

	sym, err := filepath.EvalSymlinks(abs)

	if err != nil {
		return err
	}

	syncs = append(syncs, Sync{
		Container: container,
		Local:     sym,
		Remote:    remote,
	})

	return nil
}
Beispiel #5
0
func ctor(cfg *vm.Config, index int) (vm.Instance, error) {
	p := new(params)
	if err := json.Unmarshal(cfg.Params, p); err != nil {
		return nil, fmt.Errorf("failed to unmarshal local params: %v", err)
	}
	if _, err := os.Stat(p.Fuzzer); err != nil {
		return nil, fmt.Errorf("fuzzer binary '%v' does not exist: %v", p.Fuzzer, err)
	}
	if _, err := os.Stat(p.Executor); err != nil {
		return nil, fmt.Errorf("executor binary '%v' does not exist: %v", p.Executor, err)
	}

	os.MkdirAll(cfg.Workdir, 0770)

	// Disable annoying segfault dmesg messages, fuzzer is going to crash a lot.
	etrace, err := os.Open("/proc/sys/debug/exception-trace")
	if err == nil {
		etrace.Write([]byte{'0'})
		etrace.Close()
	}

	// Don't write executor core files.
	syscall.Setrlimit(syscall.RLIMIT_CORE, &syscall.Rlimit{0, 0})

	loc := &local{
		params:   *p,
		workdir:  cfg.Workdir,
		syscalls: cfg.EnabledSyscalls,
		nocover:  cfg.NoCover,
		id:       index,
		mgrPort:  cfg.ManagerPort,
	}
	return loc, nil
}
Beispiel #6
0
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)
}
Beispiel #7
0
func main() {
	lim := &syscall.Rlimit{}

	syscall.Getrlimit(syscall.RLIMIT_NOFILE, lim)
	lim.Cur = 15
	syscall.Setrlimit(syscall.RLIMIT_NOFILE, lim)
	fmt.Println(lim)
	var s []*os.File
	for i := 0; i < int(lim.Max+10); i++ {
		f, err := os.Open("/tmp/whj.txt")
		fmt.Println(f, err)
		s = append(s, f)
		err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, lim)
		fmt.Println(lim, err)
	}
	err := syscall.Getrlimit(syscall.RLIMIT_CORE, lim)
	fmt.Println(lim, err)
	rusage := &syscall.Rusage{}
	err = syscall.Getrusage(0, rusage)
	fmt.Println(rusage, err)
	err = syscall.Getrusage(1, rusage)
	fmt.Println(rusage, err)
	err = syscall.Getrusage(2, rusage)
	fmt.Println(rusage, err)
	err = syscall.Getrusage(3, rusage)
	fmt.Println(rusage, err)
	err = syscall.Getrusage(4, rusage)
	fmt.Println(rusage, err)
}
Beispiel #8
0
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))
}
func Init(logPrefix string) {
	if logPrefix != "" {
		logPrefix += " "
	}

	logPrefix += fmt.Sprintf("[%v]", os.Getpid())
	f, err := logfile.Open(*logfileName, *logFrequency, *logMaxSize, *logMaxFiles)
	if err != nil {
		panic(fmt.Sprintf("unable to open logfile %s: %v", *logfileName, err))
	}
	logger := relog.New(f, logPrefix+" ",
		log.Ldate|log.Lmicroseconds|log.Lshortfile, relog.LogNameToLogLevel(*logLevel))
	relog.SetLogger(logger)

	if *gomaxprocs != 0 {
		runtime.GOMAXPROCS(*gomaxprocs)
		relog.Info("set GOMAXPROCS = %v", *gomaxprocs)
	}

	fdLimit := &syscall.Rlimit{*maxOpenFds, *maxOpenFds}
	if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, fdLimit); err != nil {
		relog.Fatal("can't Setrlimit %#v: err %v", *fdLimit, err)
	} else {
		relog.Info("set max-open-fds = %v", *maxOpenFds)
	}
}
Beispiel #10
0
func testRlimit(t *testing.T, userns bool) {
	if testing.Short() {
		return
	}

	rootfs, err := newRootfs()
	ok(t, err)
	defer remove(rootfs)

	config := newTemplateConfig(rootfs)
	if userns {
		config.UidMappings = []configs.IDMap{{0, 0, 1000}}
		config.GidMappings = []configs.IDMap{{0, 0, 1000}}
		config.Namespaces = append(config.Namespaces, configs.Namespace{Type: configs.NEWUSER})
	}

	// ensure limit is lower than what the config requests to test that in a user namespace
	// the Setrlimit call happens early enough that we still have permissions to raise the limit.
	ok(t, syscall.Setrlimit(syscall.RLIMIT_NOFILE, &syscall.Rlimit{
		Max: 1024,
		Cur: 1024,
	}))

	out, _, err := runContainer(config, "", "/bin/sh", "-c", "ulimit -n")
	ok(t, err)
	if limit := strings.TrimSpace(out.Stdout.String()); limit != "1025" {
		t.Fatalf("expected rlimit to be 1025, got %s", limit)
	}
}
Beispiel #11
0
// 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
}
Beispiel #12
0
// 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

}
Beispiel #13
0
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)
}
Beispiel #14
0
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
}
Beispiel #15
0
// 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
}
Beispiel #16
0
func setRlimit(resource int, value int) {
	rlimit := &syscall.Rlimit{Cur: uint64(value), Max: uint64(value)}

	err := syscall.Setrlimit(resource, rlimit)
	if err != nil {
		log.Fatalln("Error Setting Rlimit ", err)
	}
}
Beispiel #17
0
func RestoreLimits(limits []*Limit) error {
	for _, v := range limits {
		if err := syscall.Setrlimit(v.Resource, v.Rlimit); err != nil {
			return err
		}
	}
	return nil
}
Beispiel #18
0
// 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)
}
Beispiel #19
0
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)
	}
}
Beispiel #20
0
func setupRlimits(config *configs.Config) error {
	for _, rlimit := range config.Rlimits {
		l := &syscall.Rlimit{Max: rlimit.Hard, Cur: rlimit.Soft}
		if err := syscall.Setrlimit(rlimit.Type, l); err != nil {
			return fmt.Errorf("error setting rlimit type %v: %v", rlimit.Type, err)
		}
	}
	return nil
}
Beispiel #21
0
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
	}
}
Beispiel #22
0
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)
	}
}
Beispiel #23
0
// 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())
	}
}
Beispiel #24
0
func SetCurrentMaxFileNum(limit uint64) (err error) {
	rLimit := syscall.Rlimit{
		Max: limit,
		Cur: limit,
	}
	err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
	if err != nil {
		return fmt.Errorf("syscall.SetrLimit: %s", err)
	}
	return
}
Beispiel #25
0
func executeProgram(name string, args []string) {
	cpuLim := new(syscall.Rlimit)
	(*cpuLim).Max = 28
	(*cpuLim).Cur = 28
	if err := syscall.Setrlimit(6, cpuLim); err != nil {
		fmt.Println("Error here")
		panic(err)
	}
	cmd := exec.Command(name, args[1:]...)
	out, _ := cmd.CombinedOutput()
	fmt.Printf("%s", out)
}
// 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)
}
Beispiel #27
0
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
}
Beispiel #28
0
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()
}
Beispiel #29
0
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
}
Beispiel #30
-1
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)
}