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Daniel Willmann dwillmann at sysmocom.deHello Andreas, while looking through the osmo-pcu code to figure out why some connections stall we had some problems making sense of the elapsed time calculations in gprs_rlcmac_meas.cpp. Could you confirm/deny my assumptions about it or explain the idea behind it? > gettimeofday(&now_tv, NULL); > elapsed = ((now_tv.tv_sec - loss_tv->tv_sec) << 7) > + ((now_tv.tv_usec - loss_tv->tv_usec) << 7) / 1000000; I assume here you're calculating the duration of the measurement period so far and since you want to have sub-second accuracy you multiply everything with 128. Why 128? Is it becasue it simplifies the throughput calculation? (tbf->meas.dl_bw_octets/elapsed in gprs_rlcmac_dl_bw()) > if (elapsed < 128) > return 0; Is the intention here that the duration of the measurements is supposed to be one second? So every second these measurements are printed out and reset? Regards Daniel Willmann -- - Daniel Willmann <dwillmann at sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Schivelbeiner Str. 5 * 10439 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Directors: Holger Freyther, Harald Welte