load.c File Reference

Load generation algorithms. More...

#include <freeradius-devel/io/load.h>

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Data Structures
struct	fr_load_s

Macros
#define	DIFF(_rtt, _t)
#define	IALPHA   (8)
#define	IBETA   (4)
#define	RTT(_old, _new)   fr_time_delta_wrap((fr_time_delta_unwrap(_new) + (fr_time_delta_unwrap(_old) * (IALPHA - 1))) / IALPHA)
#define	RTTVAR(_rtt, _rttvar, _t)

Enumerations
enum	fr_load_state_t {   FR_LOAD_STATE_INIT = 0 ,   FR_LOAD_STATE_SENDING ,   FR_LOAD_STATE_GATED ,   FR_LOAD_STATE_DRAINING }

Functions
fr_load_t *	fr_load_generator_create (TALLOC_CTX *ctx, fr_event_list_t *el, fr_load_config_t *config, fr_load_callback_t callback, void *uctx)
fr_load_reply_t	fr_load_generator_have_reply (fr_load_t *l, fr_time_t request_time)
	Tell the load generator that we have a reply to a packet we sent. More...
static void	fr_load_generator_send (fr_load_t *l, fr_time_t now, int count)
	Send one or more packets. More...
int	fr_load_generator_start (fr_load_t *l)
	Start the load generator. More...
fr_load_stats_t const *	fr_load_generator_stats (fr_load_t const *l)
size_t	fr_load_generator_stats_sprint (fr_load_t *l, fr_time_t now, char *buffer, size_t buflen)
	Print load generator statistics in CVS format. More...
int	fr_load_generator_stop (fr_load_t *l)
	Stop the load generation through the simple expedient of deleting the timer associated with it. More...
static void	load_timer (fr_event_list_t *el, fr_time_t now, void *uctx)

Detailed Description

Load generation algorithms.

Id

54eac1de9329e784e91377e84c8aa1e5e36dd81a

Copyright

2019 Network RADIUS SAS (legal.nosp@m.@net.nosp@m.workr.nosp@m.adiu.nosp@m.s.com)

Definition in file load.c.

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Data Structure Documentation

fr_load_s

struct fr_load_s

Definition at line 65 of file load.c.

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Data Fields
fr_load_callback_t	callback
fr_load_config_t const *	config
uint32_t	count
fr_time_delta_t	delta	between packets
fr_event_list_t *	el
fr_event_timer_t const *	ev
bool	header	for printing statistics
fr_time_t	next	The next time we're supposed to send a packet.
uint32_t	pps
fr_load_state_t	state
fr_load_stats_t	stats	sending statistics
fr_time_t	step_end	when the current step will end
int	step_received
fr_time_t	step_start	when the current step started
void *	uctx

Macro Definition Documentation

DIFF

#define DIFF	(		_rtt,
			_t
	)

Value:

        (\
                fr_time_delta_lt(_rtt, _t) ? \
                        fr_time_delta_sub(_t, _rtt) : \
                        fr_time_delta_sub(_rtt, _t)\
        )

Definition at line 40 of file load.c.

IALPHA

#define IALPHA   (8)

Definition at line 38 of file load.c.

IBETA

#define IBETA   (4)

Definition at line 37 of file load.c.

RTT

#define RTT	(		_old,
			_new
	)		fr_time_delta_wrap((fr_time_delta_unwrap(_new) + (fr_time_delta_unwrap(_old) * (IALPHA - 1))) / IALPHA)

Definition at line 56 of file load.c.

RTTVAR

#define RTTVAR	(		_rtt,
			_rttvar,
			_t
	)

Value:

        fr_time_delta_div(\
                fr_time_delta_add(\
                        fr_time_delta_mul(_rttvar, fr_time_delta_wrap(IBETA - 1)), \
                        DIFF(_rtt, _t)\
                ), \
                fr_time_delta_wrap(IBETA)\
        )

Definition at line 47 of file load.c.

Enumeration Type Documentation

fr_load_state_t

enum fr_load_state_t

Enumerator
FR_LOAD_STATE_INIT
FR_LOAD_STATE_SENDING
FR_LOAD_STATE_GATED
FR_LOAD_STATE_DRAINING

Definition at line 58 of file load.c.

Function Documentation

fr_load_generator_create()

fr_load_t* fr_load_generator_create	(	TALLOC_CTX *	ctx,
		fr_event_list_t *	el,
		fr_load_config_t *	config,
		fr_load_callback_t	callback,
		void *	uctx
	)

Definition at line 87 of file load.c.

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fr_load_generator_have_reply()

fr_load_reply_t fr_load_generator_have_reply	(	fr_load_t *	l,
		fr_time_t	request_time
	)

Tell the load generator that we have a reply to a packet we sent.

Definition at line 263 of file load.c.

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fr_load_generator_send()

static void fr_load_generator_send ( fr_load_t *  l, fr_time_t  now, int  count  )

static

Send one or more packets.

Definition at line 110 of file load.c.

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fr_load_generator_start()

int fr_load_generator_start

(

fr_load_t *

l

)

Start the load generator.

Definition at line 230 of file load.c.

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fr_load_generator_stats()

fr_load_stats_t const* fr_load_generator_stats

(

fr_load_t const *

l

)

Definition at line 387 of file load.c.

fr_load_generator_stats_sprint()

size_t fr_load_generator_stats_sprint	(	fr_load_t *	l,
		fr_time_t	now,
		char *	buffer,
		size_t	buflen
	)

Print load generator statistics in CVS format.

Definition at line 341 of file load.c.

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fr_load_generator_stop()

int fr_load_generator_stop

(

fr_load_t *

l

)

Stop the load generation through the simple expedient of deleting the timer associated with it.

Definition at line 252 of file load.c.

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load_timer()

static void load_timer ( fr_event_list_t *  el, fr_time_t  now, void *  uctx  )

static

Definition at line 129 of file load.c.

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