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srsLTE
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gw: calculate GW throughput based on TTI timing 

similiar like the RLC patch, MAC TTIs are passed to GW so the
rx/tx rate can be calculated based on the LTE timing
This commit is contained in:
Andre Puschmann 2020-11-30 16:33:57 +01:00
parent c0883291f6
commit ab598dae3b
3 changed files with 18 additions and 9 deletions
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6
srsue/hdr/stack/upper/gw.h
View File

@ -43,7 +43,7 @@ public:
int init(const gw_args_t& args_, srslte::logger* logger_, stack_interface_gw* stack);
void stop();
void get_metrics(gw_metrics_t& m);
void get_metrics(gw_metrics_t& m, const uint32_t nof_tti);
// PDCP interface
void write_pdu(uint32_t lcid, srslte::unique_byte_buffer_t pdu);
@ -82,8 +82,8 @@ private:
uint32_t current_ip_addr = 0;
uint8_t current_if_id[8];
long ul_tput_bytes = 0;
long dl_tput_bytes = 0;
uint32_t ul_tput_bytes = 0;
uint32_t dl_tput_bytes = 0;
struct timeval metrics_time[3];
void run_thread();

19
srsue/src/stack/upper/gw.cc
View File

@ -84,15 +84,24 @@ void gw::stop()
}
}
void gw::get_metrics(gw_metrics_t& m)
void gw::get_metrics(gw_metrics_t& m, const uint32_t nof_tti)
{
gettimeofday(&metrics_time[2], NULL);
get_time_interval(metrics_time);
double secs = (double)metrics_time[0].tv_sec + metrics_time[0].tv_usec * 1e-6;
m.dl_tput_mbps = (dl_tput_bytes * 8 / (double)1e6) / secs;
m.ul_tput_mbps = (ul_tput_bytes * 8 / (double)1e6) / secs;
log.info("RX throughput: %4.6f Mbps. TX throughput: %4.6f Mbps.\n", m.dl_tput_mbps, m.ul_tput_mbps);
double secs = (double)metrics_time[0].tv_sec + metrics_time[0].tv_usec * 1e-6;
double dl_tput_mbps_real_time = (dl_tput_bytes * 8 / (double)1e6) / secs;
double ul_tput_mbps_real_time = (ul_tput_bytes * 8 / (double)1e6) / secs;
// Use the provided TTI counter to compute rate for metrics interface
m.dl_tput_mbps = (dl_tput_bytes * 8 / (double)1e6) / (nof_tti / 1000.0);
m.ul_tput_mbps = (ul_tput_bytes * 8 / (double)1e6) / (nof_tti / 1000.0);
log.info("gw_rx_rate_mbps=%4.2f (real=%4.2f), gw_tx_rate_mbps=%4.2f (real=%4.2f)\n",
m.dl_tput_mbps,
dl_tput_mbps_real_time,
m.ul_tput_mbps,
ul_tput_mbps_real_time);
memcpy(&metrics_time[1], &metrics_time[2], sizeof(struct timeval));
dl_tput_bytes = 0;

2
srsue/src/ue.cc
View File

@ -298,7 +298,7 @@ bool ue::get_metrics(ue_metrics_t* m)
phy->get_metrics(&m->phy);
radio->get_metrics(&m->rf);
stack->get_metrics(&m->stack);
gw_inst->get_metrics(m->gw);
gw_inst->get_metrics(m->gw, m->stack.mac[0].nof_tti);
return true;
}