import (
	"io"
)

// Discard is just like io.Discard without the io.ReaderFrom compatible
// implementation which is buggy on NUMA systems, we have to use a simpler
// io.Writer implementation alone avoids also unnecessary buffer copies,
// and as such incurred latencies.
var Discard io.Writer = discard{}

// discard is /dev/null for Golang.
type discard struct{}

func (discard) Write(p []byte) (int, error) {

func (bp *BytePoolCap) Put(b []byte) {
	if bp == nil {
		return
	}
	select {
	case bp.c <- b:
		// buffer went back into pool
	default:
		// buffer didn't go back into pool, just discard
	}
}

// Width returns the width of the byte arrays in this pool.
func (bp *BytePoolCap) Width() (n int) {
	if bp == nil {
		return 0
	}
	return bp.w
}

					continue
				}
				xl2, err := other.xlmeta()
				if err != nil {
					if err := selectFrom(idx); err != nil {
						return err
					}
					continue
				}
				if xl == nil {
					// Discard current "best"
					if err := selectFrom(bestIdx); err != nil {
						return err
					}
					bestIdx = idx
					best = other
					xl = xl2
				} else {
					// Mark read, unless we added it as new "best".

	for m := range re {
		if err := enc.Encode(m); err != nil {
			s.writeErrorResponse(w, errors.New("Encoding mrf failed: "+err.Error()))
			return
		}
	}
}

// DevNull - everything goes to io.Discard
func (s *peerRESTServer) DevNull(w http.ResponseWriter, r *http.Request) {
	if !s.IsValid(w, r) {
		s.writeErrorResponse(w, errors.New("invalid request"))
		return
	}

	globalNetPerfRX.Connect()

			// unconsumedTimer fires.
			select {
			// Check after a second
			case <-time.After(time.Second):
				h.mutex.Unlock()
				continue

			case <-h.ctx.Done():
				h.mutex.Unlock()
				// discard result and return.
				return errHealStopSignalled

			// Timeout if no results consumed for too long.
			case <-unconsumedTimer.C:
				h.mutex.Unlock()
				return errHealIdleTimeout
			}
		}
		break

		config.EnvRootPassword,
	} {
		os.Unsetenv(env)
	}

	// Set as non-distributed.
	globalIsDistErasure = false

	// Disable printing console messages during tests.
	color.Output = io.Discard
	// Disable Error logging in testing.
	logger.DisableErrorLog = true

	// Uncomment the following line to see trace logs during unit tests.
	// logger.AddTarget(console.New())

				}
				if hdr.OpCode.IsControl() {
					if err := controlHandler(hdr, &wsReader); err != nil {
						return nil, err
					}
					continue
				}
				if hdr.OpCode&want == 0 {
					if err := wsReader.Discard(); err != nil {
						return nil, err
					}
					continue
				}
				if int64(cap(dst)) < hdr.Length+1 {
					dst = make([]byte, 0, hdr.Length+hdr.Length>>3)
				}

		n   int64
		err error
	}
	type justReader struct {
		io.Reader
	}
	type justWriter struct {
		io.Writer
	}
	discard := justWriter{io.Discard} // hide ReadFrom

	var with, withOut nErr
	with.n, with.err = io.Copy(discard, NewReader(nil))
	withOut.n, withOut.err = io.Copy(discard, justReader{NewReader(nil)})
	if with != withOut {
		t.Errorf("behavior differs: with = %#v; without: %#v", with, withOut)
	}
}

	Error(context.Context, string, ...interface{})
	Trace(ctx context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error)
}

var (
	// Discard logger will print any log to io.Discard
	Discard = New(log.New(io.Discard, "", log.LstdFlags), Config{})
	// Default Default logger
	Default = New(log.New(os.Stdout, "\r\n", log.LstdFlags), Config{
		SlowThreshold:             200 * time.Millisecond,

		MountPath: "/tmp/drive1",
		ID:        "uuid",
		Error:     "",
	}

	b.SetBytes(1)
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		err := msgp.Encode(io.Discard, &v)
		if err != nil {
			b.Fatal(err)
		}
	}
}

func BenchmarkEncodeDiskInfoGOB(b *testing.B) {
	v := DiskInfo{
		Total:     1000,
		Free:      1000,
		Used:      1000,