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fix(nr_dlsch): time meas in TX symbol processing

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* Global timers were started and stopped
  in the TX symbol processing tasks
  which is not thread safe
* gNBs nrL1_stats.log now shows
  PDSCH generation time rather than
  layer mapping and precoding times
This commit is contained in:
Romain Beurdouche
2026-02-26 11:53:27 +01:00
parent b875f855c7
commit 1d42dfda66
2 changed files with 14 additions and 8 deletions
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6
executables/nr-gnb.c
View File

@@ -208,8 +208,7 @@ static size_t dump_L1_meas_stats(PHY_VARS_gNB *gNB, RU_t *ru, char *output, size
output += print_meas_log(&gNB->dlsch_encoding_stats, "DLSCH encoding", NULL, NULL, output, end - output);
output += print_meas_log(&gNB->dlsch_scrambling_stats, "DLSCH scrambling", NULL, NULL, output, end-output);
output += print_meas_log(&gNB->dlsch_modulation_stats, "DLSCH modulation", NULL, NULL, output, end - output);
output += print_meas_log(&gNB->dlsch_resource_mapping_stats, "DLSCH resource mapping", NULL, NULL, output,end-output);
output += print_meas_log(&gNB->dlsch_precoding_stats, "DLSCH precoding", NULL, NULL, output,end-output);
output += print_meas_log(&gNB->dlsch_pdsch_generation_stats, "PDSCH generation", NULL, NULL, output, end - output);
output += print_meas_log(&gNB->phy_proc_rx, "L1 Rx processing", NULL, NULL, output, end - output);
output += print_meas_log(&gNB->ts_deinterleave, "UL segment deinterleaving", NULL, NULL, output, end - output);
output += print_meas_log(&gNB->ts_rate_unmatch, "UL segment rate recovery", NULL, NULL, output, end - output);
@@ -280,8 +279,7 @@ void *nrL1_stats_thread(void *param) {
reset_meas(&gNB->rx_pusch_stats);
reset_meas(&gNB->dlsch_scrambling_stats);
reset_meas(&gNB->dlsch_modulation_stats);
reset_meas(&gNB->dlsch_resource_mapping_stats);
reset_meas(&gNB->dlsch_precoding_stats);
reset_meas(&gNB->dlsch_pdsch_generation_stats);
while (!oai_exit) {
sleep(1);
if (ftruncate(fileno(fd), 0) != 0 || fseek(fd, 0, SEEK_SET) != 0) {

16
openair1/PHY/NR_TRANSPORT/nr_dlsch.c
View File

@@ -486,6 +486,8 @@ typedef struct pdschSymbolProc_s {
unsigned int beam_nb;
unsigned int re_beginning_of_symbol[14];
c16_t *tx_layers[4];
time_stats_t dlsch_resource_mapping_stats;
time_stats_t dlsch_precoding_stats;
} pdschSymbolProc_t;
static void nr_pdsch_symbol_processing(void *arg)
@@ -518,7 +520,7 @@ static void nr_pdsch_symbol_processing(void *arg)
rel15->nrOfLayers);
#endif
for (int l_symbol = rdata->startSymbol; l_symbol < rdata->startSymbol + rdata->numSymbols; l_symbol++) {
start_meas(&gNB->dlsch_resource_mapping_stats);
start_meas(&rdata->dlsch_resource_mapping_stats);
int l_prime = 0; // single symbol layer 0
int l_overline = get_l0(rel15->dlDmrsSymbPos);
@@ -581,14 +583,14 @@ static void nr_pdsch_symbol_processing(void *arg)
rel15->dmrsConfigType,
mod_dmrs + dmrs_idx);
} // layer loop
stop_meas(&gNB->dlsch_resource_mapping_stats);
stop_meas(&rdata->dlsch_resource_mapping_stats);
start_meas(&gNB->dlsch_precoding_stats);
start_meas(&rdata->dlsch_precoding_stats);
for (int ant = 0; ant < frame_parms->nb_antennas_tx; ant++) {
const size_t txdataF_offset_per_symbol = l_symbol * symbol_sz;
do_txdataF(txdataF, symbol_sz, txdataF_precoding, gNB, rel15, ant, start_sc, txdataF_offset_per_symbol);
}
stop_meas(&gNB->dlsch_precoding_stats);
stop_meas(&rdata->dlsch_precoding_stats);
}
// Task running in // completed
completed_task_ans(rdata->ans);
@@ -752,12 +754,18 @@ static int do_one_dlsch(unsigned char *input_ptr, PHY_VARS_gNB *gNB, NR_gNB_DLSC
re_beginning_of_symbol -= n_dmrs;
}
}
reset_meas(&rdata->dlsch_resource_mapping_stats);
reset_meas(&rdata->dlsch_precoding_stats);
for (int l = 0; l < rel15->nrOfLayers; l++)
rdata->tx_layers[l] = tx_layers[l];
task_t t = {.func = &nr_pdsch_symbol_processing, .args = rdata};
pushTpool(&gNB->threadPool, t);
}
join_task_ans(&ans);
for (int i = 0; i < nb_tasks; i++) {
merge_meas(&gNB->dlsch_resource_mapping_stats, &arr[i].dlsch_resource_mapping_stats);
merge_meas(&gNB->dlsch_precoding_stats, &arr[i].dlsch_precoding_stats);
}
stop_meas(&gNB->dlsch_pdsch_generation_stats);
/* output and its parts for each dlsch should be aligned on 64 bytes (or 8 * 64 bits)
* should remain a multiple of 8 * 64 with enough offset to fit each dlsch