This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/OpenBSC@lists.osmocom.org/.
Konrad Meier meierk at informatik.uni-freiburg.deHi Andreas, I have Ubuntu 10.4 running on an Core 2 Duo machine with SATA-Harddisk. The LCR stalling is definatly not a problem of a insufficient CPU power. But every time a stalling message apears i can see heavy harddisk access. regards Konrad Am 11.08.2010 09:08, schrieb Andreas.Eversberg: > 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 at lists.gnumonks.org [mailto:openbsc-bounces at 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 >