输入流的响应时间

Question

当我尝试在Instagram上发出获取请求时，平均而言，我得到250毫秒的延迟。 iOS上的相同调用大约需要50毫秒。我尝试了StringBuilder，HttpGet和HttpResponse（给出最差的350毫秒延迟）。

        StringBuilder response = "";
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestMethod("GET");
        urlConnection.connect();
        long start2 = System.currentTimeMillis();
        BufferedReader reader = new BufferedReader(new InputStreamReader( urlConnection.getInputStream()));
        Log.e("Response Time", "Reader ends = " + (System.currentTimeMillis() - start2));
        char[] buf = new char[2048];
        int charsRead;
        while((charsRead = reader.read(buf, 0, 2048)) > 0) {
            response.append(buf, 0, charsRead);
        }
        reader.close();
        urlConnection.close();

有人可以建议我如何减少延迟？