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srsLTE
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Enable pdu stack latency measurements in the eNB.

This commit is contained in:
Francisco 2020-12-11 15:05:03 +00:00 committed by Francisco Paisana
parent f23fdf0639
commit e2654e69ec
6 changed files with 39 additions and 15 deletions
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6
lib/include/srslte/common/common.h
View File

@ -82,7 +82,7 @@
namespace srslte {
//#define ENABLE_TIMESTAMP
#define ENABLE_TIMESTAMP
/******************************************************************************
* Byte and Bit buffers
@ -152,7 +152,7 @@ public:
return 0;
gettimeofday(&timestamp[2], NULL);
get_time_interval(timestamp);
return timestamp[0].tv_usec;
return timestamp[0].tv_usec + timestamp[0].tv_sec * 1000000;
#else
return 0;
#endif
@ -263,7 +263,7 @@ typedef std::unique_ptr<byte_buffer_t, byte_buffer_deleter> unique_byte_buffer_t
/// Utilities to create a span out of a byte_buffer.
///
using byte_span = span<uint8_t>;
using byte_span = span<uint8_t>;
using const_byte_span = span<const uint8_t>;
inline byte_span make_span(byte_buffer_t& b)

4
lib/include/srslte/upper/rlc_am_lte.h
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@ -13,6 +13,7 @@
#ifndef SRSLTE_RLC_AM_LTE_H
#define SRSLTE_RLC_AM_LTE_H
#include "srslte/adt/accumulators.h"
#include "srslte/common/buffer_pool.h"
#include "srslte/common/common.h"
#include "srslte/common/log.h"
@ -182,6 +183,9 @@ private:
// Mutexes
pthread_mutex_t mutex;
// Metrics
srslte::rolling_average<float> mean_pdu_latency_us;
};
// Receiver sub-class

4
lib/include/srslte/upper/rlc_um_lte.h
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@ -13,6 +13,7 @@
#ifndef SRSLTE_RLC_UM_LTE_H
#define SRSLTE_RLC_UM_LTE_H
#include "srslte/adt/accumulators.h"
#include "srslte/common/buffer_pool.h"
#include "srslte/common/common.h"
#include "srslte/common/log.h"
@ -63,6 +64,9 @@ private:
***************************************************************************/
uint32_t vt_us = 0; // Send state. SN to be assigned for next PDU.
// Metrics
srslte::rolling_average<float> mean_pdu_latency_us;
void debug_state();
};

14
lib/src/upper/rlc_am_lte.cc
View File

@ -837,7 +837,12 @@ int rlc_am_lte::rlc_am_lte_tx::build_data_pdu(uint8_t* payload, uint32_t nof_byt
tx_sdu->N_bytes -= to_move;
tx_sdu->msg += to_move;
if (tx_sdu->N_bytes == 0) {
log->debug("%s Complete SDU scheduled for tx. Stack latency: %ld us\n", RB_NAME, tx_sdu->get_latency_us());
long latency_us = tx_sdu->get_latency_us();
mean_pdu_latency_us.push(latency_us);
log->debug("%s Complete SDU scheduled for tx. Stack latency (last/average): %ld/%ld us\n",
RB_NAME,
latency_us,
(long)mean_pdu_latency_us.value());
tx_sdu.reset();
}
if (pdu_space > to_move) {
@ -876,7 +881,12 @@ int rlc_am_lte::rlc_am_lte_tx::build_data_pdu(uint8_t* payload, uint32_t nof_byt
tx_sdu->N_bytes -= to_move;
tx_sdu->msg += to_move;
if (tx_sdu->N_bytes == 0) {
log->debug("%s Complete SDU scheduled for tx. Stack latency: %ld us\n", RB_NAME, tx_sdu->get_latency_us());
long latency_us = tx_sdu->get_latency_us();
mean_pdu_latency_us.push(latency_us);
log->debug("%s Complete SDU scheduled for tx. Stack latency (last/average): %ld/%ld us\n",
RB_NAME,
latency_us,
(long)mean_pdu_latency_us.value());
tx_sdu.reset();
}
if (pdu_space > to_move) {

25
lib/src/upper/rlc_um_lte.cc
View File

@ -23,8 +23,7 @@ rlc_um_lte::rlc_um_lte(srslte::log_ref log_,
srsue::rrc_interface_rlc* rrc_,
srslte::timer_handler* timers_) :
rlc_um_base(log_, lcid_, pdcp_, rrc_, timers_)
{
}
{}
// Warning: must call stop() to properly deallocate all buffers
rlc_um_lte::~rlc_um_lte()
@ -146,8 +145,12 @@ int rlc_um_lte::rlc_um_lte_tx::build_data_pdu(unique_byte_buffer_t pdu, uint8_t*
tx_sdu->N_bytes -= to_move;
tx_sdu->msg += to_move;
if (tx_sdu->N_bytes == 0) {
log->debug(
"%s Complete SDU scheduled for tx. Stack latency: %ld us\n", rb_name.c_str(), tx_sdu->get_latency_us());
long latency_us = tx_sdu->get_latency_us();
mean_pdu_latency_us.push(latency_us);
log->debug("%s Complete SDU scheduled for tx. Stack latency (last/average): %ld/%ld us\n",
rb_name.c_str(),
latency_us,
(long)mean_pdu_latency_us.value());
tx_sdu.reset();
}
@ -178,8 +181,12 @@ int rlc_um_lte::rlc_um_lte_tx::build_data_pdu(unique_byte_buffer_t pdu, uint8_t*
tx_sdu->N_bytes -= to_move;
tx_sdu->msg += to_move;
if (tx_sdu->N_bytes == 0) {
log->debug(
"%s Complete SDU scheduled for tx. Stack latency: %ld us\n", rb_name.c_str(), tx_sdu->get_latency_us());
long latency_us = tx_sdu->get_latency_us();
mean_pdu_latency_us.push(latency_us);
log->debug("%s Complete SDU scheduled for tx. Stack latency (last/average): %ld/%ld us\n",
rb_name.c_str(),
latency_us,
(long)mean_pdu_latency_us.value());
tx_sdu.reset();
}
@ -220,10 +227,8 @@ void rlc_um_lte::rlc_um_lte_tx::reset()
***************************************************************************/
rlc_um_lte::rlc_um_lte_rx::rlc_um_lte_rx(rlc_um_base* parent_) :
rlc_um_base_rx(parent_),
reordering_timer(timers->get_unique_timer())
{
}
rlc_um_base_rx(parent_), reordering_timer(timers->get_unique_timer())
{}
rlc_um_lte::rlc_um_lte_rx::~rlc_um_lte_rx() {}

1
srsenb/src/stack/upper/gtpu.cc
View File

@ -227,6 +227,7 @@ void gtpu::rem_user(uint16_t rnti)
void gtpu::handle_gtpu_s1u_rx_packet(srslte::unique_byte_buffer_t pdu, const sockaddr_in& addr)
{
gtpu_log->debug("Received %d bytes from S1-U interface\n", pdu->N_bytes);
pdu->set_timestamp();
gtpu_header_t header;
if (not gtpu_read_header(pdu.get(), &header, gtpu_log)) {