AW: Avoid LCR-Stalling

hi, what machine do you use? it smells like IDE harddisk. i also have IDE on a test system. better get rid of it. regards, andreas -----Ursprüngliche Nachricht----- Von: openbsc-bounces(a)lists.gnumonks.org [mailto:openbsc-bounces@lists.gnumonks.org] Im Auftrag von Konrad Meier Gesendet: Dienstag, 10. August 2010 15:56 An: OpenBSC list Betreff: Avoid LCR-Stalling Dear List, At the moment I am building a GSM-Network with OpenBSC and three NanoBTS at the University of Freiburg. The purpose of this network is teaching and research. The Network has an ISDN BRI Interface which allows every gsm-phone to be called over a land line telephony number. We had huge problems with LCR-Stalling in our setup which lead to a increasing delay during a call (up to 6-10 seconds...). We could trace the problem to lookups in the database hlr.sqlite3. After some time the database was about 18MB big and it took some time to perform operations in the database. The quick solution was to copy the database to a RAM-Disk. A RAM-Disk can be created like this: sudo mount -t tmpfs -o size=300M tmpfs ramdisk After that, we never had seen stalling anymore. But this can only be considered as a quick hack because in case of a system failure all changes to the database are lost. Is someone at the moment working on a interface to a better database system? Maybe I find some student who can do this. Regards Konrad Meier