Hello again. Thanks for your test Wolfgang. When I do it like you did, I get approx. the same results. But you misunderstood my scenario. I don't want to send ABC x times. Here's what I meant in pseudocode. for ( i = 0; i < X; i++) Send Y times A Send Y times B Send Y times C I dropped the idea of calling fireUntilHalt() and now I call fireAllRules after every single insert, just to be quick. This avoids the problem of getting random execution durations. Now I produce nearly constant times every time I execute this. But it is still not very satisfying. These are just a few hundred events. In a real business scenario it will be a lot more. Increasing X will cause the time to go up linearly which is ok, but increasing Y will have the time go up overproportional, which is not acceptable. We will evaluate this now with a really good machine. But it would be interesting to see what results others achieve in this scenario. Best regards, Oliver _________________________________________________________________________ SEEBURGER AG Vorstand/Seeburger Executive Board: Sitz der Gesellschaft/ Bernd Seeburger, Axel Haas, Michael Kleeberg Registered Office: Edisonstrasse 1 Vorsitzender des Aufsichtsrats/Chairperson of D-75015 Bretten the Seeburger Supervisory Board: Tel.: 07252 / 96-0 Dr. Franz Scherer Fax: 07252 / 96-2222 Internet: http://www.seeburger.de Registergericht/Commercial Register: e-mail: info(a)seeburger.de HRB 240708 Mannheim _________________________________________________________________________ Dieses E-Mail ist nur fur den Empfanger bestimmt, an den es gerichtet ist und kann vertrauliches bzw. unter das Berufsgeheimnis fallendes Material enthalten. Jegliche darin enthaltene Ansicht oder Meinungs- au?erung ist die des Autors und stellt nicht notwendigerweise die Sind Sie nicht der Empfanger, so haben Sie diese E-Mail irrtumlich erhalten und jegliche Verwendung, Veroffentlichung, Weiterleitung, Abschrift oder jeglicher Druck dieser E-Mail ist strengstens untersagt. Weder die noch der Absender (Oliver Roess) ubernehmen die Haftung fur Viren; es obliegt Ihrer Verantwortung, die E-Mail und deren Anhange (0) auf Viren zu prufen. The present email addresses only the addressee which it targets and may contain confidential material that may be protected by the professional secret. The opinions reflected herein are not necessarily If you are not the addressee, you have accidentally got this email and are not enabled to use, publish, forward, copy or print it in any way. Neither the , nor the sender (Oliver Roess) are liable for viruses, being your own responsibility to check this email and its attachments (0) for this purpose. _________________________________________________________________________