To speed up backtesting application can set custom data interval. Here is an example:
private void setDataInterval(ITesterClient client, String dateFrom, String dateTo) throws ParseException {
final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
Date dateFromObject = dateFormat.parse(dateFrom);
Date dateToObject = dateFormat.parse(dateTo);
client.setDataInterval(Period.ONE_MIN, OfferSide.ASK, ITesterClient.InterpolationMethod.FOUR_TICKS, dateFromObject.getTime(), dateToObject.getTime());
}