Hi All, We are extending classes in an initail effort to instrument DNS, connect, response(first buffer read), and download. The DNS and connect looks pretty good. Where are the bits actually being retrieved over the wire? Overriding HttpMethodBase. byte[] getResponseBody() and adding response and download times returns reasonable looking response times, but almost all the download duration times are 0. Here is the current code. It is derived from GetMethod.java public byte[] getResponseBody() { if (this.responseBody == null) { try { boolean firstReadDone = false; InputStream instream = getResponseBodyAsStream(); if (instream != null) { LOG.debug("Buffering response body"); ByteArrayOutputStream outstream = new ByteArrayOutputStream(); byte[] buffer = new byte[4096]; int len; while ((len = instream.read(buffer)) > 0) { outstream.write(buffer, 0, len); if ( !firstReadDone ) { responseEnd = System.currentTimeMillis(); } System.out.println("ApacheGetMethod.getResponseBody() path: " + getPath() + " bytes read: " + len ); firstReadDone = true; } outstream.close(); setResponseStream(null); this.responseBody = outstream.toByteArray(); } } catch (IOException e) { LOG.error("I/O failure reading response body", e); this.responseBody = null; } long downloadEnd = System.currentTimeMillis(); downloadDuration = downloadEnd - responseEnd; System.out.println("ApacheGetMethod.getResponseBody() path: " + getPath() + " responseEnd: " + responseEnd + " downloadEnd: " + downloadEnd + " downloadDuration: " + downloadDuration ); } return this.responseBody; } Thanks for any ideas or information, Steve Steve Johnson Software Engineer Mercury Interactive 720 564 - 6532 USA, Canada and the Americas 720 564-6620 Hours: M-F 08:00-17:00 MST (Mountain Standard Time) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ <http://www.mercuryinteractive.com> http://www.mercuryinteractive.com Looking for Answers to your SiteScope or SiteSeer questions? <http://support.mercuryinteractive.com> http://support.mercuryinteractive.com ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^