gnunet-ats-sim.c File Reference

ats traffic simulator: this tool uses the ats-test library to setup a topology and generate traffic between these peers. More...

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_testbed_service.h"
#include "gnunet_ats_service.h"
#include "gnunet_core_service.h"
#include "ats-testing.h"

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Macros
#define	TEST_TIMEOUT

Functions
static void	evaluate (struct GNUNET_TIME_Relative duration_total)
static void	do_shutdown (void *cls)
static void	do_timeout (void *cls)
static void	log_request__cb (void *cls, const struct GNUNET_HELLO_Address *address, int address_active, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, const struct GNUNET_ATS_Properties *ats)
static void	experiment_done_cb (struct Experiment *e, struct GNUNET_TIME_Relative duration, int success)
static void	episode_done_cb (struct Episode *ep)
static void	topology_setup_done (void *cls, struct BenchmarkPeer *masters, struct BenchmarkPeer *slaves)
static void	parse_args (int argc, char *argv[])
int	main (int argc, char *argv[])

Variables
static struct BenchmarkPeer *	masters_p
static struct BenchmarkPeer *	slaves_p
static char *	opt_exp_file
	cmd option -e: experiment file More...
static int	opt_log
	cmd option -l: enable logging More...
static int	opt_plot
	cmd option -p: enable plots More...
static int	opt_verbose
	cmd option -v: verbose logs More...
static struct GNUNET_SCHEDULER_Task *	timeout_task
static struct Experiment *	e
static struct LoggingHandle *	l

Detailed Description

ats traffic simulator: this tool uses the ats-test library to setup a topology and generate traffic between these peers.

The traffic description is loaded from a experiment description file

Author

Christian Grothoff

Matthias Wachs

Definition in file gnunet-ats-sim.c.

Macro Definition Documentation

TEST_TIMEOUT

#define TEST_TIMEOUT

Value:

GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, \
                                                    10)

Definition at line 35 of file gnunet-ats-sim.c.

Function Documentation

evaluate()

static void evaluate ( struct GNUNET_TIME_Relative  duration_total )

static

Definition at line 69 of file gnunet-ats-sim.c.

References _, BenchmarkPartner::bytes_received, BenchmarkPartner::bytes_sent, BenchmarkPartner::dest, duration, BenchmarkPartner::messages_sent, BenchmarkPeer::no, Experiment::num_masters, Experiment::num_slaves, p, BenchmarkPeer::partners, BenchmarkPeer::pref_partner, GNUNET_TIME_Relative::rel_value_us, BenchmarkPartner::total_app_rtt, BenchmarkPeer::total_bytes_received, and BenchmarkPeer::total_bytes_sent.

Referenced by experiment_done_cb().

{
  int c_m;
  int c_s;
  unsigned int duration;
  struct BenchmarkPeer *mp;
  struct BenchmarkPartner *p;

  unsigned int b_sent_sec;
  double kb_sent_percent;
  unsigned int b_recv_sec;
  double kb_recv_percent;
  unsigned int rtt;


  duration = (duration_total.rel_value_us / (1000 * 1000));
  if (0 == duration)
    duration = 1;
  for (c_m = 0; c_m < e->num_masters; c_m++)
  {
    mp = &masters_p[c_m];
    fprintf (stderr,
             _ (
               "Master [%u]: sent: %u KiB in %u sec. = %u KiB/s, received: %u KiB in %u sec. = %u KiB/s\n"),
             mp->no, mp->total_bytes_sent / 1024,
             duration,
             (mp->total_bytes_sent / 1024) / duration,
             mp->total_bytes_received / 1024,
             duration,
             (mp->total_bytes_received / 1024) / duration);

    for (c_s = 0; c_s < e->num_slaves; c_s++)
    {
      p = &mp->partners[c_s];

      b_sent_sec = 0;
      b_recv_sec = 0;
      kb_sent_percent = 0.0;
      kb_recv_percent = 0.0;
      rtt = 0;

      if (duration > 0)
      {
        b_sent_sec = p->bytes_sent / duration;
        b_recv_sec = p->bytes_received / duration;
      }

      if (mp->total_bytes_sent > 0)
        kb_sent_percent = ((double) p->bytes_sent * 100) / mp->total_bytes_sent;
      if (mp->total_bytes_received > 0)
        kb_recv_percent = ((double) p->bytes_received * 100)
                          / mp->total_bytes_received;
      if (1000 * p->messages_sent > 0)
        rtt = p->total_app_rtt / (1000 * p->messages_sent);
      fprintf (stderr,
               "%c Master [%u] -> Slave [%u]: sent %u Bips (%.2f %%), received %u Bips (%.2f %%)\n",
               (mp->pref_partner == p->dest) ? '*' : ' ',
               mp->no, p->dest->no,
               b_sent_sec, kb_sent_percent,
               b_recv_sec, kb_recv_percent);
      fprintf (stderr,
               "%c Master [%u] -> Slave [%u]: Average application layer RTT: %u ms\n",
               (mp->pref_partner == p->dest) ? '*' : ' ',
               mp->no, p->dest->no, rtt);
    }
  }
}

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do_shutdown()

static void do_shutdown ( void *  cls )

static

Definition at line 139 of file gnunet-ats-sim.c.

References GNUNET_ATS_TEST_experimentation_stop(), GNUNET_ATS_TEST_generate_preferences_stop_all(), GNUNET_ATS_TEST_generate_traffic_stop_all(), GNUNET_ATS_TEST_logging_clean_up(), GNUNET_ATS_TEST_logging_stop(), GNUNET_ATS_TEST_shutdown_topology(), and GNUNET_SCHEDULER_cancel().

Referenced by topology_setup_done().

{
  fprintf (stderr, "Shutdown\n");
  if (NULL != timeout_task)
  {
    GNUNET_SCHEDULER_cancel (timeout_task);
    timeout_task = NULL;
  }
  if (NULL != l)
  {
    GNUNET_ATS_TEST_logging_stop (l);
    GNUNET_ATS_TEST_logging_clean_up (l);
    l = NULL;
  }

  /* Stop traffic generation */
  GNUNET_ATS_TEST_generate_traffic_stop_all ();

  /* Stop all preference generations */
  GNUNET_ATS_TEST_generate_preferences_stop_all ();

  if (NULL != e)
  {
    GNUNET_ATS_TEST_experimentation_stop (e);
    e = NULL;
  }
  GNUNET_ATS_TEST_shutdown_topology ();
}

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do_timeout()

static void do_timeout ( void *  cls )

static

Definition at line 170 of file gnunet-ats-sim.c.

References GNUNET_SCHEDULER_shutdown().

Referenced by topology_setup_done().

{
  timeout_task = NULL;
  GNUNET_SCHEDULER_shutdown ();
}

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log_request__cb()

static void log_request__cb ( void *  cls, const struct GNUNET_HELLO_Address *  address, int  address_active, struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_out, struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_in, const struct GNUNET_ATS_Properties *  ats  )

static

Definition at line 178 of file gnunet-ats-sim.c.

Referenced by main().

{
  if (NULL != l)
  {
    // GNUNET_break (0);
    // GNUNET_ATS_TEST_logging_now (l);
  }
}

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experiment_done_cb()

static void experiment_done_cb ( struct Experiment *  e, struct GNUNET_TIME_Relative  duration, int  success  )

static

Definition at line 194 of file gnunet-ats-sim.c.

References evaluate(), GNUNET_ATS_TEST_generate_preferences_stop_all(), GNUNET_ATS_TEST_generate_traffic_stop_all(), GNUNET_ATS_TEST_logging_stop(), GNUNET_ATS_TEST_logging_write_to_file(), GNUNET_ERROR_TYPE_INFO, GNUNET_log, GNUNET_OK, GNUNET_SCHEDULER_shutdown(), GNUNET_STRINGS_relative_time_to_string(), GNUNET_YES, opt_exp_file, opt_log, and opt_plot.

Referenced by topology_setup_done().

{
  if (GNUNET_OK == success)
    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
                "Experiment done successful in %s\n",
                GNUNET_STRINGS_relative_time_to_string (duration,
                                                        GNUNET_YES));
  else
    GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Experiment failed \n");

  /* Stop logging */
  GNUNET_ATS_TEST_logging_stop (l);

  /* Stop traffic generation */
  GNUNET_ATS_TEST_generate_traffic_stop_all ();

  /* Stop all preference generations */
  GNUNET_ATS_TEST_generate_preferences_stop_all ();

  evaluate (duration);
  if (opt_log)
    GNUNET_ATS_TEST_logging_write_to_file (l, opt_exp_file, opt_plot);
  GNUNET_SCHEDULER_shutdown ();
}

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episode_done_cb()

static void episode_done_cb ( struct Episode *  ep )

static

Definition at line 223 of file gnunet-ats-sim.c.

References GNUNET_ERROR_TYPE_INFO, GNUNET_log, and Episode::id.

Referenced by topology_setup_done().

{
  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
              "Episode %u done\n",
              ep->id);
}

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topology_setup_done()

static void topology_setup_done ( void *  cls, struct BenchmarkPeer *  masters, struct BenchmarkPeer *  slaves  )

static

Definition at line 232 of file gnunet-ats-sim.c.

References do_shutdown(), do_timeout(), episode_done_cb(), experiment_done_cb(), GNUNET_ATS_TEST_experimentation_run(), GNUNET_ATS_TEST_generate_traffic_start(), GNUNET_ATS_TEST_logging_start(), GNUNET_ATS_TEST_TG_CONSTANT, GNUNET_ATS_TEST_TG_LINEAR, GNUNET_ATS_TEST_TG_RANDOM, GNUNET_ATS_TEST_TG_SINUS, GNUNET_ERROR_TYPE_INFO, GNUNET_log, GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_add_shutdown(), GNUNET_TIME_relative_add(), GNUNET_TIME_UNIT_FOREVER_REL, GNUNET_TIME_UNIT_MINUTES, Experiment::log_freq, Experiment::max_duration, Experiment::name, Experiment::num_masters, Experiment::num_slaves, and opt_verbose.

Referenced by main().

{
  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
              "Topology setup complete!\n");

  masters_p = masters;
  slaves_p = slaves;

  l = GNUNET_ATS_TEST_logging_start (e->log_freq,
                                     e->name,
                                     masters_p,
                                     e->num_masters, e->num_slaves,
                                     opt_verbose);
  GNUNET_ATS_TEST_experimentation_run (e,
                                       &episode_done_cb,
                                       &experiment_done_cb);
/*
   GNUNET_ATS_TEST_generate_preferences_start(&masters[0],&masters[0].partners[0],
      GNUNET_ATS_TEST_TG_CONSTANT, 1, 1, GNUNET_TIME_UNIT_SECONDS,
      GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 250),
      GNUNET_ATS_PREFERENCE_BANDWIDTH);
 *//*
   GNUNET_ATS_TEST_generate_preferences_start(&masters[0],&masters[0].partners[0],
      GNUNET_ATS_TEST_TG_LINEAR, 1, 50,
      GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 2),
      GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 250),
      GNUNET_ATS_PREFERENCE_BANDWIDTH);
 *//*
   GNUNET_ATS_TEST_generate_preferences_start(&masters[0],&masters[0].partners[0],
        GNUNET_ATS_TEST_TG_RANDOM, 1, 50,
        GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 2),
        GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 250),
        GNUNET_ATS_PREFERENCE_BANDWIDTH);
 *//*
   GNUNET_ATS_TEST_generate_preferences_start(&masters[0],&masters[0].partners[0],
      GNUNET_ATS_TEST_TG_SINUS, 10, 5,
      GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 5),
      GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 250),
      GNUNET_ATS_PREFERENCE_BANDWIDTH);
 */
#if 0
  int c_m;
  int c_s;
  for (c_m = 0; c_m < e->num_masters; c_m++)
  {
    for (c_s = 0; c_s < e->num_slaves; c_s++)
    {
      /* Generate maximum traffic to all peers */
      /* Example: Generate traffic with constant 10,000 Bytes/s */
      GNUNET_ATS_TEST_generate_traffic_start (&masters[c_m],
                                              &masters[c_m].partners[c_s],
                                              GNUNET_ATS_TEST_TG_CONSTANT,
                                              10000,
                                              GNUNET_TIME_UNIT_FOREVER_REL);
      /* Example: Generate traffic with an increasing rate from 1000 to 2000
       * Bytes/s with in a minute */
      GNUNET_ATS_TEST_generate_traffic_start (&masters[c_m],
                                              &masters[c_m].partners[c_s],
                                              GNUNET_ATS_TEST_TG_LINEAR,
                                              1000,
                                              2000,
                                              GNUNET_TIME_UNIT_MINUTES,
                                              GNUNET_TIME_UNIT_FOREVER_REL);
      /* Example: Generate traffic with a random rate between 1000 to 2000
       * Bytes/s */
      GNUNET_ATS_TEST_generate_traffic_start (&masters[c_m],
                                              &masters[c_m].partners[c_s],
                                              GNUNET_ATS_TEST_TG_RANDOM,
                                              1000,
                                              2000,
                                              GNUNET_TIME_UNIT_FOREVER_REL,
                                              GNUNET_TIME_UNIT_FOREVER_REL);
      /* Example: Generate traffic with a sinus form, a base rate of
       * 1000 Bytes/s, an amplitude of (max-base), and a period of 1 minute */
      GNUNET_ATS_TEST_generate_traffic_start (&masters[c_m],
                                              &masters[c_m].partners[c_s],
                                              GNUNET_ATS_TEST_TG_SINUS,
                                              1000,
                                              2000,
                                              GNUNET_TIME_UNIT_MINUTES,
                                              GNUNET_TIME_UNIT_FOREVER_REL);
    }
  }
#endif

  timeout_task
    = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_add (
                                      GNUNET_TIME_UNIT_MINUTES,
                                      e->max_duration),
                                    &do_timeout,
                                    NULL);
  GNUNET_SCHEDULER_add_shutdown (&do_shutdown, NULL);
}

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parse_args()

static void parse_args ( int  argc, char *  argv[]  )

static

Definition at line 330 of file gnunet-ats-sim.c.

References GNUNET_free_non_null, GNUNET_NO, GNUNET_strdup, GNUNET_YES, opt_exp_file, opt_log, opt_plot, and opt_verbose.

Referenced by main().

{
  int c;

  opt_exp_file = NULL;
  opt_log = GNUNET_NO;
  opt_plot = GNUNET_NO;

  for (c = 0; c < argc; c++)
  {
    if ((c < (argc - 1)) && (0 == strcmp (argv[c], "-e")))
    {
      GNUNET_free_non_null (opt_exp_file);
      opt_exp_file = GNUNET_strdup (argv[c + 1]);
    }
    if (0 == strcmp (argv[c], "-l"))
    {
      opt_log = GNUNET_YES;
    }
    if (0 == strcmp (argv[c], "-p"))
    {
      opt_plot = GNUNET_YES;
    }
    if (0 == strcmp (argv[c], "-v"))
    {
      opt_verbose = GNUNET_YES;
    }
  }
}

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main()

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 362 of file gnunet-ats-sim.c.

References Experiment::cfg_file, GNUNET_ATS_TEST_create_topology(), GNUNET_ATS_TEST_experimentation_load(), GNUNET_free, GNUNET_log_setup(), GNUNET_NO, log_request__cb(), Experiment::num_episodes, Experiment::num_masters, Experiment::num_slaves, opt_exp_file, parse_args(), and topology_setup_done().

{
  GNUNET_log_setup ("gnunet-ats-sim", "INFO", NULL);

  parse_args (argc, argv);
  if (NULL == opt_exp_file)
  {
    fprintf (stderr, "No experiment given...\n");
    return 1;
  }

  fprintf (stderr, "Loading experiment `%s' \n", opt_exp_file);
  e = GNUNET_ATS_TEST_experimentation_load (opt_exp_file);
  if (NULL == e)
  {
    fprintf (stderr, "Invalid experiment\n");
    return 1;
  }
  if (0 == e->num_episodes)
  {
    fprintf (stderr, "No episodes included\n");
    return 1;
  }

  /* Setup a topology with */
  GNUNET_ATS_TEST_create_topology ("gnunet-ats-sim", e->cfg_file,
                                   e->num_slaves,
                                   e->num_masters,
                                   GNUNET_NO,
                                   &topology_setup_done,
                                   NULL,
                                   &log_request__cb);
  GNUNET_free (opt_exp_file);
  return 0;
}

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Variable Documentation

masters_p

struct BenchmarkPeer* masters_p

static

Definition at line 38 of file gnunet-ats-sim.c.

slaves_p

struct BenchmarkPeer* slaves_p

static

Definition at line 39 of file gnunet-ats-sim.c.

opt_exp_file

char* opt_exp_file

static

cmd option -e: experiment file

Definition at line 44 of file gnunet-ats-sim.c.

Referenced by experiment_done_cb(), main(), and parse_args().

opt_log

int opt_log

static

cmd option -l: enable logging

Definition at line 49 of file gnunet-ats-sim.c.

Referenced by experiment_done_cb(), and parse_args().

opt_plot

int opt_plot

static

cmd option -p: enable plots

Definition at line 54 of file gnunet-ats-sim.c.

Referenced by experiment_done_cb(), and parse_args().

opt_verbose

int opt_verbose

static

cmd option -v: verbose logs

Definition at line 59 of file gnunet-ats-sim.c.

Referenced by parse_args(), and topology_setup_done().

timeout_task

struct GNUNET_SCHEDULER_Task* timeout_task

static

Definition at line 61 of file gnunet-ats-sim.c.

e

struct Experiment* e

static

Definition at line 63 of file gnunet-ats-sim.c.

l

struct LoggingHandle* l

static

Definition at line 65 of file gnunet-ats-sim.c.