b.WriteString(ep.Value)
			b.WriteString(KvNewline)
		}
	}
}

// WriteTo writes the string representation of the configuration to the given
// builder. When off is true, adds a comment character before the config system
// output. It also ignores values when empty and deprecated.
func (cs *SubsysInfo) WriteTo(b *strings.Builder, off bool) {
	cs.AddEnvString(b)
	if off {
		b.WriteString(KvComment)

			runtime.GC()
			var buf bytes.Buffer
			err := pprof.Lookup("heap").WriteTo(&buf, 0)
			return buf.Bytes(), err
		}
	case madmin.ProfilerBlock:
		runtime.SetBlockProfileRate(100)
		prof.stopFn = func() ([]byte, error) {
			var buf bytes.Buffer
			err := pprof.Lookup("block").WriteTo(&buf, 0)
			runtime.SetBlockProfileRate(0)
			return buf.Bytes(), err
		}
	case madmin.ProfilerMutex:

			PutByteBuffer(toSend)
			err = conn.SetWriteDeadline(time.Now().Add(connWriteTimeout))
			if err != nil {
				gridLogIf(ctx, fmt.Errorf("conn.SetWriteDeadline: %w", err))
				return
			}
			_, err = buf.WriteTo(conn)
			if err != nil {
				gridLogIf(ctx, fmt.Errorf("ws write: %w", err))
				return
			}
			continue
		}

		// Merge entries and send
		queue = append(queue, toSend)

	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	var s strings.Builder
	for _, subSysConfig := range subSysConfigs {
		subSysConfig.WriteTo(&s, false)
	}

	password := cred.SecretKey
	econfigData, err := madmin.EncryptData(password, []byte(s.String()))
	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return

				return nil
			}

			// Write all running goroutines.
			tmp, err := os.CreateTemp("", "minio-goroutines-*.txt")
			if err == nil {
				_ = pprof.Lookup("goroutine").WriteTo(tmp, 1)
				tmp.Close()
				return errors.New("timed out. some connections are still active. goroutines written to " + tmp.Name())
			}
			return errors.New("timed out. some connections are still active")

	reader := bytes.NewReader(data)
	for {
		// Using io.Copy instead of this loop will not work for us as io.Copy
		// will use bytes.Reader.WriteTo() which will not do shardSize'ed writes
		// causing error.
		n, err := reader.Read(shard)
		w.Write(shard[:n])
		if err == nil {
			continue
		}
		if err == io.EOF {
			break
		}