@Override
  public byte[] renderUserMethodGraphForUser(long theUserPid, TimeRange theRange)
      throws IOException {
    ourLog.info("Rendering user method graph for user {}", theUserPid);

    myBroadcastSender.requestFlushQueuedStats();

    PersUser user = myDao.getUser(theUserPid);

    Date start = theRange.getNoPresetFrom();
    Date end = theRange.getNoPresetTo();
    if (theRange.getWithPresetRange() != null) {
      start =
          new Date(
              System.currentTimeMillis()
                  - (theRange.getWithPresetRange().getNumMins() * DateUtils.MILLIS_PER_MINUTE));
      end = new Date();
    }

    HashMap<Long, List<Double>> methods = new HashMap<>();
    List<Long> timestamps = new ArrayList<>();

    InvocationStatsIntervalEnum nextInterval =
        doWithStatsSupportFindInterval(myConfig.getConfig(), start);
    Date nextDate = nextInterval.truncate(start);
    Date nextDateEnd = null;

    List<PersInvocationMethodUserStats> stats = myDao.getUserStatsWithinTimeRange(user, start, end);
    Validate.notNull(stats);
    stats = new ArrayList<>(stats);
    Collections.sort(
        stats,
        new Comparator<PersInvocationMethodUserStats>() {
          @Override
          public int compare(
              PersInvocationMethodUserStats theO1, PersInvocationMethodUserStats theO2) {
            return theO1.getPk().getStartTime().compareTo(theO2.getPk().getStartTime());
          }
        });
    ourLog.debug(
        "Loaded {} user {} stats for range {} - {}",
        new Object[] {stats.size(), theUserPid, start, end});
    if (stats.size() > 0) {
      ourLog.debug(
          "Found stats with range {} - {}",
          stats.get(0).getPk().getStartTime(),
          stats.get(stats.size() - 1).getPk().getStartTime());
    }
    ourLog.debug("Looking for stats starting at {}", nextDate);

    Iterator<PersInvocationMethodUserStats> statIter = stats.iterator();
    PersInvocationMethodUserStats nextStat = null;

    int timesPassed = 0;
    int foundEntries = 0;
    double grandTotal = 0;
    while (nextDate.after(end) == false) {
      double numMinutes = nextInterval.numMinutes();
      nextDateEnd = DateUtils.addMinutes(nextDate, (int) nextInterval.numMinutes());
      timestamps.add(nextDate.getTime());
      int arrayIndex = timesPassed;
      timesPassed++;

      for (List<Double> next : methods.values()) {
        next.add(ZERO_DOUBLE);
      }

      while (nextStat == null || statIter.hasNext()) {
        if (nextStat == null && statIter.hasNext()) {
          nextStat = statIter.next();
          foundEntries++;
        }
        if (nextStat != null && nextStat.getPk().getStartTime().before(nextDateEnd)) {
          long methodPid = nextStat.getPk().getMethod();
          List<Double> newList = methods.get(methodPid);
          if (newList == null) {
            newList = new ArrayList<>();
            for (int i = 0; i < timesPassed; i++) {
              newList.add(ZERO_DOUBLE);
            }
            methods.put(methodPid, newList);
          }

          // TODO: should we have an option to include fails/faults?
          double total = nextStat.getSuccessInvocationCount();
          double minuteTotal = total / numMinutes;

          grandTotal += minuteTotal;

          newList.set(arrayIndex, newList.get(arrayIndex) + minuteTotal);
          nextStat = null;
        } else {
          break;
        }
      }

      nextDate = doWithStatsSupportIncrement(nextDate, nextInterval);
      nextInterval = doWithStatsSupportFindInterval(myConfig.getConfig(), nextDate);
      nextDate = nextInterval.truncate(nextDate);
    }

    ourLog.debug("Found {} entries for {} methods", new Object[] {foundEntries, methods.size()});

    // Come up with a good order
    final Map<Long, PersMethod> pidToMethod = new HashMap<>();
    for (long nextPid : methods.keySet()) {
      PersMethod method = myDao.getServiceVersionMethodByPid(nextPid);
      if (method != null) {
        pidToMethod.put(nextPid, method);
      } else {
        ourLog.debug("Discarding unknown method: {}", nextPid);
      }
    }
    ArrayList<Long> pids = new ArrayList<>(pidToMethod.keySet());
    Collections.sort(
        pids,
        new Comparator<Long>() {
          @Override
          public int compare(Long theO1, Long theO2) {
            PersMethod m1 = pidToMethod.get(theO1);
            PersMethod m2 = pidToMethod.get(theO2);
            return MethodComparator.INSTANCE.compare(m1, m2);
          }
        });

    RrdGraphDef graphDef = new RrdGraphDef();
    graphDef.setWidth(600);
    graphDef.setHeight(200);

    long[] graphTimestamps = new long[timestamps.size()];
    for (int i = 0; i < timestamps.size(); i++) {
      graphTimestamps[i] = timestamps.get(i) / 1000;
    }

    graphDef.setTimeSpan(graphTimestamps);
    graphDef.setVerticalLabel("Calls / Minute");
    graphDef.setTextAntiAliasing(true);

    int longestName = 0;
    for (PersMethod next : pidToMethod.values()) {
      longestName = Math.max(longestName, next.getName().length());
    }

    // Draw the methods
    String previousServiceDesc = null;
    List<Color> colours = createStackColours(pids.size());
    for (int i = 0; i < pids.size(); i++) {
      Long nextPid = pids.get(i);
      PersMethod nextMethod = pidToMethod.get(nextPid);
      List<Double> values = methods.get(nextPid);

      LinearInterpolator avgPlot =
          new LinearInterpolator(graphTimestamps, toDoublesFromDoubles(values));
      String srcName = "inv" + i;
      graphDef.datasource(srcName, avgPlot);
      String methodDesc =
          nextMethod.getServiceVersion().getService().getServiceId()
              + " "
              + nextMethod.getServiceVersion().getVersionId();
      if (!StringUtils.equals(previousServiceDesc, methodDesc)) {
        graphDef.comment(methodDesc + "\\l");
        previousServiceDesc = methodDesc;
      }

      double sumDoubles = sumDoubles(values);
      double pct = (sumDoubles / grandTotal);

      if (i == 0) {
        graphDef.area(
            srcName, colours.get(i), " " + StringUtils.rightPad(nextMethod.getName(), longestName));
      } else {
        graphDef.stack(
            srcName, colours.get(i), " " + StringUtils.rightPad(nextMethod.getName(), longestName));
      }
      graphDef.gprint(srcName, ConsolFun.AVERAGE, "Avg %5.1f ");
      graphDef.gprint(srcName, ConsolFun.MIN, "Min %5.1f ");
      graphDef.gprint(srcName, ConsolFun.MAX, "Max %5.1f ");

      String formattedPct = new DecimalFormat("0.0#%").format(pct);
      graphDef.comment("Pct: " + formattedPct + "\\l");
    }

    if (pids.size() == 0) {
      double[] values = new double[timestamps.size()];
      for (int j = 0; j < values.length; j++) {
        values[j] = 0.0;
      }
      LinearInterpolator avgPlot = new LinearInterpolator(graphTimestamps, values);
      String srcName = "inv";
      graphDef.datasource(srcName, avgPlot);
      graphDef.area(
          srcName, Color.BLACK, StringUtils.rightPad("No activity during this range", 100));
    }

    return render(graphDef);
  }
  @Override
  public byte[] renderSvcVerUsageGraph(long theServiceVersionPid, TimeRange theRange)
      throws IOException {
    ourLog.info("Rendering latency graph for service version {}", theServiceVersionPid);

    myBroadcastSender.requestFlushQueuedStats();

    final List<Double> invCount = new ArrayList<>();
    final List<Double> invCountFault = new ArrayList<>();
    final List<Double> invCountFail = new ArrayList<>();
    final List<Double> invCountSecurityFail = new ArrayList<>();
    final List<Long> timestamps = new ArrayList<>();

    BasePersServiceVersion svcVer = myServiceRegistry.getServiceVersionByPid(theServiceVersionPid);
    for (PersMethod nextMethod : svcVer.getMethods()) {
      doWithStatsByMinute(
          myConfig.getConfig(),
          theRange,
          myStatus,
          nextMethod,
          new IWithStats<PersInvocationMethodSvcverStatsPk, PersInvocationMethodSvcverStats>() {
            @Override
            public void withStats(int theIndex, PersInvocationMethodSvcverStats theStats) {
              growToSizeDouble(invCount, theIndex);
              growToSizeDouble(invCountFault, theIndex);
              growToSizeDouble(invCountFail, theIndex);
              growToSizeDouble(invCountSecurityFail, theIndex);
              growToSizeLong(timestamps, theIndex);

              double numMinutes = theStats.getPk().getInterval().numMinutes();

              invCount.set(
                  theIndex,
                  invCount.get(theIndex) + (theStats.getSuccessInvocationCount() / numMinutes));
              invCountFault.set(
                  theIndex,
                  invCountFault.get(theIndex) + (theStats.getFaultInvocationCount() / numMinutes));
              invCountFail.set(
                  theIndex,
                  invCountFail.get(theIndex) + (theStats.getFailInvocationCount() / numMinutes));
              invCountSecurityFail.set(
                  theIndex,
                  invCountSecurityFail.get(theIndex)
                      + (theStats.getServerSecurityFailures() / numMinutes));
              timestamps.set(theIndex, theStats.getPk().getStartTime().getTime());
            }
          });
    }

    RrdGraphDef graphDef = new RrdGraphDef();
    graphDef.setWidth(600);
    graphDef.setHeight(200);
    graphDef.setTitle(
        "Usage: "
            + svcVer.getService().getDomain().getDomainId()
            + " / "
            + svcVer.getService().getServiceId()
            + " / "
            + svcVer.getVersionId());

    long[] timestamps1 = new long[invCount.size()];

    for (int i = 0; i < invCount.size(); i++) {
      timestamps1[i] = timestamps.get(i) / 1000;
    }

    graphDef.setTimeSpan(timestamps1);
    graphDef.setVerticalLabel("Calls / Min");
    graphDef.setTextAntiAliasing(true);

    LinearInterpolator avgPlot =
        new LinearInterpolator(timestamps1, toDoublesFromDoubles(invCount));
    graphDef.datasource("inv", avgPlot);
    if (hasValues(invCount)) {
      graphDef.area("inv", Color.decode("#00C000"), StringUtils.rightPad("Successful Calls", 20));
      graphDef.gprint("inv", ConsolFun.AVERAGE, "Average %8.1f   ");
      graphDef.gprint("inv", ConsolFun.MIN, "Min %8.1f   ");
      graphDef.gprint("inv", ConsolFun.MAX, "Max %8.1f\\l");
    } else {
      graphDef.area(
          "inv",
          Color.decode("#00C000"),
          StringUtils.rightPad("No Successful calls during this time period\\l", 20));
    }

    if (hasValues(invCountFault)) {
      LinearInterpolator avgFaultPlot =
          new LinearInterpolator(timestamps1, toDoublesFromDoubles(invCountFault));
      graphDef.datasource("invfault", avgFaultPlot);
      graphDef.stack("invfault", Color.decode("#6060C0"), StringUtils.rightPad("Faults", 20));
      graphDef.gprint("invfault", ConsolFun.AVERAGE, "Average %8.1f   ");
      graphDef.gprint("invfault", ConsolFun.MIN, "Min %8.1f   ");
      graphDef.gprint("invfault", ConsolFun.MAX, "Max %8.1f\\l");
    } else {
      graphDef.comment("No Faults during this time period\\l");
    }

    if (hasValues(invCountFail)) {
      LinearInterpolator avgFailPlot =
          new LinearInterpolator(timestamps1, toDoublesFromDoubles(invCountFail));
      graphDef.datasource("invfail", avgFailPlot);
      graphDef.stack("invfail", Color.decode("#F00000"), StringUtils.rightPad("Fails", 20));
      graphDef.gprint("invfail", ConsolFun.AVERAGE, "Average %8.1f   ");
      graphDef.gprint("invfail", ConsolFun.MIN, "Min %8.1f   ");
      graphDef.gprint("invfail", ConsolFun.MAX, "Max %8.1f\\l");
    } else {
      graphDef.comment("No Failures during this time period\\l");
    }

    if (hasValues(invCountSecurityFail)) {
      LinearInterpolator avgSecurityFailPlot =
          new LinearInterpolator(timestamps1, toDoublesFromDoubles(invCountSecurityFail));
      graphDef.datasource("invSecurityFail", avgSecurityFailPlot);
      graphDef.stack(
          "invSecurityFail", Color.decode("#F0A000"), StringUtils.rightPad("Security Fails", 20));
      graphDef.gprint("invSecurityFail", ConsolFun.AVERAGE, "Average %8.1f   ");
      graphDef.gprint("invSecurityFail", ConsolFun.MIN, "Min %8.1f   ");
      graphDef.gprint("invSecurityFail", ConsolFun.MAX, "Max %8.1f\\l");
    } else {
      graphDef.comment("No Security Failures during this time period\\l");
    }

    return render(graphDef);
  }
  @Override
  public byte[] renderSvcVerPayloadSizeGraph(long theServiceVersionPid, TimeRange theRange)
      throws IOException {
    ourLog.info("Rendering payload size graph for service version {}", theServiceVersionPid);

    myBroadcastSender.requestFlushQueuedStats();

    final List<Integer> invCount = new ArrayList<>();
    final List<Long> totalSuccessReqBytes = new ArrayList<>();
    final List<Long> totalSuccessRespBytes = new ArrayList<>();
    final List<Long> timestamps = new ArrayList<>();

    BasePersServiceVersion svcVer = myServiceRegistry.getServiceVersionByPid(theServiceVersionPid);
    for (PersMethod nextMethod : svcVer.getMethods()) {
      doWithStatsByMinute(
          myConfig.getConfig(),
          theRange,
          myStatus,
          nextMethod,
          new IWithStats<PersInvocationMethodSvcverStatsPk, PersInvocationMethodSvcverStats>() {
            @Override
            public void withStats(int theIndex, PersInvocationMethodSvcverStats theStats) {
              growToSizeInt(invCount, theIndex);
              growToSizeLong(totalSuccessRespBytes, theIndex);
              growToSizeLong(totalSuccessReqBytes, theIndex);
              growToSizeLong(timestamps, theIndex);

              totalSuccessReqBytes.set(
                  theIndex,
                  addToLong(
                      totalSuccessReqBytes.get(theIndex),
                      theStats.getSuccessRequestMessageBytes()));
              totalSuccessRespBytes.set(
                  theIndex,
                  addToLong(
                      totalSuccessRespBytes.get(theIndex),
                      theStats.getSuccessResponseMessageBytes()));
              invCount.set(
                  theIndex, addToInt(invCount.get(theIndex), theStats.getSuccessInvocationCount()));
              timestamps.set(theIndex, theStats.getPk().getStartTime().getTime());
            }
          });
    }

    double[] avgSuccessReqSize = new double[invCount.size()];
    double[] avgSuccessRespSize = new double[invCount.size()];
    for (int i = 0; i < invCount.size(); i++) {
      avgSuccessReqSize[i] =
          invCount.get(i) == 0 ? 0 : totalSuccessReqBytes.get(i) / invCount.get(i);
      avgSuccessRespSize[i] =
          invCount.get(i) == 0 ? 0 : totalSuccessRespBytes.get(i) / invCount.get(i);
    }

    RrdGraphDef graphDef = new RrdGraphDef();
    graphDef.setWidth(600);
    graphDef.setHeight(200);
    graphDef.setTitle(
        "Message Payload Size: "
            + svcVer.getService().getDomain().getDomainId()
            + " / "
            + svcVer.getService().getServiceId()
            + " / "
            + svcVer.getVersionId());

    long[] timestamps1 = new long[invCount.size()];

    double prevReq = 0.0;
    double prevResp = 0.0;
    for (int i = 0; i < invCount.size(); i++) {
      timestamps1[i] = timestamps.get(i) / 1000;
      prevReq = avgSuccessReqSize[i] > 0 ? avgSuccessReqSize[i] : prevReq;
      avgSuccessReqSize[i] = prevReq;
      prevResp = avgSuccessRespSize[i] > 0 ? avgSuccessRespSize[i] : prevResp;
      avgSuccessRespSize[i] = prevResp;
    }

    for (int i = 0; i < avgSuccessReqSize.length; i++) {}

    graphDef.setTimeSpan(timestamps1);
    graphDef.setVerticalLabel("Bytes / Message");
    graphDef.setTextAntiAliasing(true);

    LinearInterpolator reqPlot = new LinearInterpolator(timestamps1, avgSuccessReqSize);
    graphDef.datasource("req", reqPlot);
    graphDef.line("req", Color.RED, "Requests  ", 2.0f);
    graphDef.gprint("req", ConsolFun.AVERAGE, "Average Size %8.1f   ");
    graphDef.gprint("req", ConsolFun.MIN, "Min %8.1f   ");
    graphDef.gprint("req", ConsolFun.MAX, "Max %8.1f\\l");

    LinearInterpolator respPlot = new LinearInterpolator(timestamps1, avgSuccessRespSize);
    graphDef.datasource("resp", respPlot);
    graphDef.line("resp", Color.GREEN, "Responses ", 2.0f);
    graphDef.gprint("resp", ConsolFun.AVERAGE, "Average Size %8.1f   ");
    graphDef.gprint("resp", ConsolFun.MIN, "Min %8.1f   ");
    graphDef.gprint("resp", ConsolFun.MAX, "Max %8.1f\\l");

    return render(graphDef);
  }
  @Override
  public byte[] renderSvcVerThrottlingGraph(long theServiceVersionPid, TimeRange theRange)
      throws IOException {
    ourLog.info("Rendering throttling graph for service version {}", theServiceVersionPid);

    myBroadcastSender.requestFlushQueuedStats();

    final List<Long> throttleAcceptCount = new ArrayList<>();
    final List<Long> throttleRejectCount = new ArrayList<>();
    final List<Long> timestamps = new ArrayList<>();

    BasePersServiceVersion svcVer = myServiceRegistry.getServiceVersionByPid(theServiceVersionPid);
    for (PersMethod nextMethod : svcVer.getMethods()) {
      doWithStatsByMinute(
          myConfig.getConfig(),
          theRange,
          myStatus,
          nextMethod,
          new IWithStats<PersInvocationMethodSvcverStatsPk, PersInvocationMethodSvcverStats>() {
            @Override
            public void withStats(int theIndex, PersInvocationMethodSvcverStats theStats) {
              growToSizeLong(throttleAcceptCount, theIndex);
              growToSizeLong(throttleRejectCount, theIndex);
              growToSizeLong(timestamps, theIndex);

              double numMinutes = theStats.getPk().getInterval().numMinutes();

              throttleAcceptCount.set(
                  theIndex,
                  throttleAcceptCount.get(theIndex)
                      + (int) (theStats.getTotalThrottleAccepts() / numMinutes));
              throttleRejectCount.set(
                  theIndex,
                  throttleRejectCount.get(theIndex)
                      + (int) (theStats.getTotalThrottleRejections() / numMinutes));
              timestamps.set(theIndex, theStats.getPk().getStartTime().getTime());
            }
          });
    }

    RrdGraphDef graphDef = new RrdGraphDef();
    graphDef.setWidth(600);
    graphDef.setHeight(200);
    graphDef.setTitle(
        "Request Throttling: "
            + svcVer.getService().getDomain().getDomainId()
            + " / "
            + svcVer.getService().getServiceId()
            + " / "
            + svcVer.getVersionId());

    long[] timestamps1 = new long[timestamps.size()];

    for (int i = 0; i < timestamps.size(); i++) {
      timestamps1[i] = timestamps.get(i) / 1000;
    }

    graphDef.setTimeSpan(timestamps1);
    graphDef.setVerticalLabel("Throttled Calls / Min");
    graphDef.setTextAntiAliasing(true);

    LinearInterpolator avgPlot =
        new LinearInterpolator(timestamps1, toDoublesFromLongs(throttleAcceptCount));
    graphDef.datasource("inv", avgPlot);
    graphDef.area(
        "inv", Color.GREEN, "Accepted (Throttled but call was allowed to proceed after delay)\\l");
    graphDef.gprint("inv", ConsolFun.AVERAGE, "Average %8.1f   ");
    graphDef.gprint("inv", ConsolFun.MIN, "Min %8.1f   ");
    graphDef.gprint("inv", ConsolFun.MAX, "Max %8.1f\\l");

    LinearInterpolator avgFaultPlot =
        new LinearInterpolator(timestamps1, toDoublesFromLongs(throttleRejectCount));
    graphDef.datasource("invfault", avgFaultPlot);
    graphDef.stack("invfault", Color.BLUE, "Rejected (Throttle queue was full or not allowed)\\l");
    graphDef.gprint("invfault", ConsolFun.AVERAGE, "Average %8.1f   ");
    graphDef.gprint("invfault", ConsolFun.MIN, "Min %8.1f   ");
    graphDef.gprint("invfault", ConsolFun.MAX, "Max %8.1f\\l");

    return render(graphDef);
  }
  @Override
  public byte[] renderSvcVerLatencyMethodGraph(
      long theSvcVerPid, TimeRange theRange, boolean theIndividualMethod) throws IOException {
    ourLog.info("Rendering user method graph for Service Version {}", theSvcVerPid);

    myBroadcastSender.requestFlushQueuedStats();

    BasePersServiceVersion svcVer = myServiceRegistry.getServiceVersionByPid(theSvcVerPid);

    /*
     * Init the graph
     */

    RrdGraphDef graphDef = new RrdGraphDef();
    graphDef.setWidth(600);
    graphDef.setHeight(200);

    graphDef.setTitle(
        "Backing Service Latency: "
            + svcVer.getService().getDomain().getDomainId()
            + " / "
            + svcVer.getService().getServiceId()
            + " / "
            + svcVer.getVersionId());
    graphDef.setVerticalLabel("Milliseconds / Call");
    graphDef.setTextAntiAliasing(true);
    graphDef.setMinValue(0.0);

    /*
     * Loop through each method and load the latency stats
     */
    final List<String> names = new ArrayList<>();
    final List<List<Long>> latencyLists = new ArrayList<>();
    final List<Long> timestamps = new ArrayList<>();

    for (PersMethod nextMethod : svcVer.getMethods()) {
      if (BaseDtoServiceVersion.METHOD_NAME_UNKNOWN.equals(nextMethod.getName())) {
        continue;
      }

      final List<Long> latencyMin;
      if (theIndividualMethod) {
        names.add(nextMethod.getName());
        latencyMin = new ArrayList<>();
        latencyLists.add(latencyMin);
      } else {
        if (names.isEmpty()) {
          names.add("All Methods");
          latencyMin = new ArrayList<>();
          latencyLists.add(latencyMin);
        } else {
          latencyMin = latencyLists.get(0);
        }
      }

      doWithStatsByMinute(
          myConfig.getConfig(),
          theRange,
          myStatus,
          nextMethod,
          new IWithStats<PersInvocationMethodSvcverStatsPk, PersInvocationMethodSvcverStats>() {
            @Override
            public void withStats(int theIndex, PersInvocationMethodSvcverStats theStats) {
              growToSizeLong(latencyMin, theIndex);
              growToSizeLong(timestamps, theIndex);
              long latency =
                  theStats.getSuccessInvocationTotalTime() > 0
                      ? theStats.getSuccessInvocationTotalTime()
                          / theStats.getSuccessInvocationCount()
                      : 0;
              latencyMin.set(theIndex, addToLong(latencyMin.get(theIndex), latency));
              timestamps.set(theIndex, theStats.getPk().getStartTime().getTime());
            }
          });
    }

    /*
     * Set time span
     */
    long[] graphTimestamps = new long[timestamps.size()];
    for (int i = 0; i < timestamps.size(); i++) {
      graphTimestamps[i] = timestamps.get(i) / 1000;
    }
    graphDef.setTimeSpan(graphTimestamps);

    /*
     * Figure out the longest name
     */
    int longestName = 0;
    for (String next : names) {
      longestName = Math.max(longestName, next.length());
    }

    /*
     * Straighten
     */
    int numWithValues = 0;
    List<Boolean> hasValuesList = new ArrayList<>();
    for (List<Long> nextList : latencyLists) {
      boolean hasValues = false;
      for (int i = 0; i < nextList.size(); i++) {
        long l = nextList.get(i);
        if (l == 0) {
          if (i > 0 && nextList.get(i - 1) > 0) {
            nextList.set(i, nextList.get(i - 1));
          }
        } else {
          hasValues = true;
        }
      }
      hasValuesList.add(hasValues);
      if (hasValues) {
        numWithValues++;
      }
    }

    /*
     * Figure out colours
     */
    List<Color> colours = new ArrayList<>();
    int colourIndex = 0;
    for (int i = 0; i < hasValuesList.size(); i++) {
      if (hasValuesList.get(i)) {
        colours.add(createStackColour(numWithValues, colourIndex++));
      } else {
        colours.add(Color.black);
      }
    }

    /*
     * Add the lines to the graph
     */

    for (int i = 0; i < names.size(); i++) {
      String name = names.get(i);
      List<Long> latencyMin = latencyLists.get(i);

      Plottable avgPlot = new LinearInterpolator(graphTimestamps, toDoublesFromLongs(latencyMin));
      String srcName = "inv" + i;
      graphDef.datasource(srcName, avgPlot);

      graphDef.line(srcName, colours.get(i), " " + StringUtils.rightPad(name, longestName), 2);
      if (hasValuesList.get(i)) {
        graphDef.gprint(srcName, ConsolFun.AVERAGE, "Avg %5.1f ");
        graphDef.gprint(srcName, ConsolFun.MIN, "Min %5.1f ");
        graphDef.gprint(srcName, ConsolFun.MAX, "Max %5.1f \\l");
      } else {
        graphDef.comment("No Invocations During This Period\\l");
      }
    }

    return render(graphDef);
  }