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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2002-2012. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
#ifndef __BENCHMARK_H__
#define __BENCHMARK_H__
/* The define __BENCHMARK__ is the master switch to turn on and off
* benchmarking. This will enable the benchmark-BIFs in hipe_bif1.c.
* Documentation for the BIFs is in hipe_bif1.c, and that is where you
* will find the information about how to accually get some data out
* from these timers and counters.
*/
/* #define __BENCHMARK__ */
#ifdef __BENCHMARK__
/*
* The defines below enables different parts of the benchmaring.
* Counters and timers that are disabled, always report zero in
* the BIFs.
*/
/* BM_TIMERS keeps track of the time spent in diferent parts of the
* system. It only measures accual active time, not time spent in idle
* mode. These timers requires hardware support. For Linux, use the
* package perfctr from user.it.uu.se/~mikpe/linux/perfctr. If this
* package is not specified when configuring the system
* (--with-perfctr=PATH), the Solaris hrtime_t will be used.
* To add new timers look below.
*/
#define BM_TIMERS
/* BM_COUNTERS count all kinds of events that occurs in the system.
* Among other things it counts the number of messages, then number of
* garbage collections, the number of processes spawned etc.
* To add new counters look below.
*/
#define BM_COUNTERS
/* BM_MESSAGE_SIZES keeps a log of the size of all messages sent in
* the system. This introduce an overhead in time for the shared heap
* system since all message sizes have to be calculated at send.
*/
/* #define BM_MESSAGE_SIZES */
/* BM_HEAP_SIZES goes through all processes at garbage collection time
* to sum their allocated and used heap sizes. In anything else than a
* shared heap system, this will cost.
*/
/* #define BM_HEAP_SIZES */
/* BM_STATISTICS saves an entry in the file BM_STATISTICS_FILE. This
* is done for each erlang node at exit time.
*/
/* #define BM_STATISTICS */
#endif /* __BENCHMARK__ */
#ifdef BM_STATISTICS
# define BM_STATISTICS_FILE "/tmp/erlang_statistics.joppe.log"
#endif /* BM_STATISTICS */
/************ There are no more settings below this line *************/
/*
* Maintenance and how to add new stuff is documented by the code
* below ;-)
*/
#ifdef BM_COUNTERS
/*********************************************************************
* To add new counters:
*
* Add the variable here AND in benchmark.c. Use the macro
* BM_COUNT(var) in the code where you want to increase it.
*
*/
extern unsigned long long processes_busy;
extern unsigned long long processes_spawned;
extern unsigned long long messages_sent;
extern unsigned long long messages_copied;
extern unsigned long long messages_ego;
extern unsigned long long minor_gc;
extern unsigned long long major_gc;
#define BM_COUNT(var) (var)++;
#define BM_EGO_COUNT(send,rec) { \
if ((send) == (rec)) \
BM_COUNT(messages_ego); }
#define BM_LAZY_COPY_START long long gcs = minor_global_gc + major_global_gc;
#define BM_LAZY_COPY_STOP { gcs = (minor_global_gc + major_global_gc) - gcs; \
if (gcs > gc_in_copy) gc_in_copy = gcs; }
#else /* !BM_COUNTERS */
# define BM_COUNT(var)
# define BM_EGO_COUNT(send,rec)
# define BM_LAZY_COPY_START
# define BM_LAZY_COPY_STOP
#endif /* BM_COUNTERS */
#ifdef BM_TIMERS
/*********************************************************************
* To add new timers:
*
* Add the variable below using the form extern BM_TIMER_T blah_time.
* Also add them in benchmark.c using the macro NEW_TIMER(blah). Use
* the macro BM_SWAP_TIMER(from,blah) ... BM_SWAP_TIMER(blah,to) to
* start and stop the new timer. Note, that you have to know what
* timer is running at the place where you want to insert your new
* timer to be able to stop and start (from,to) it.
*
* You can use the macros BM_STOP_TIMER(blah) and BM_START_TIMER(blah)
* around code that should not be timed at all. As above, you have to
* know what timer to start and stop. The system timer is running at
* most places in the emulator. Only the garbage collector and the
* message sending has its own timers at the moment.
*
* The timer_time used when stopping timers is the time it takes to
* start and stop the timers, calculated in init_benchmarking(). If it
* is not there, the time it takes to do this will accually be
* substantial compared to some small times in the system we want to
* meassure (send time in shared heap for instance).
*/
#if (defined(__i386__) || defined(__x86_64__)) && USE_PERFCTR
#include "libperfctr.h"
#define BM_TIMER_T double
extern struct vperfctr *system_clock;
extern double cpu_khz;
extern BM_TIMER_T start_time;
#define BM_START_TIMER(t) start_time = \
(BM_TIMER_T)vperfctr_read_tsc(system_clock) / \
cpu_khz;
#define BM_STOP_TIMER(t) do { \
BM_TIMER_T tmp = ((BM_TIMER_T)vperfctr_read_tsc(system_clock) / cpu_khz); \
tmp -= (start_time + timer_time); \
t##_time += (tmp > 0 ? tmp : 0); \
} while(0)
#define BM_TIME_PRINTER(str,time) do { \
int min,sec,milli,micro; \
BM_TIMER_T tmp = (time) * 1000; \
micro = (uint)(tmp - ((int)(tmp / 1000)) * 1000); \
tmp /= 1000; \
milli = (uint)(tmp - ((int)(tmp / 1000)) * 1000); \
tmp /= 1000; \
sec = (uint)(tmp - ((int)(tmp / 60)) * 60); \
min = (uint)tmp / 60; \
erts_fprintf(file,str": %d:%02d.%03d %03d\n",min,sec,milli,micro); \
} while(0)
#else /* !USE_PERFCTR (Assuming Solaris) */
#define BM_TIMER_T hrtime_t
#define BM_START_TIMER(t) system_clock = sys_gethrtime()
#define BM_STOP_TIMER(t) do { \
BM_TIMER_T tmp = (sys_gethrtime() - system_clock) - timer_time; \
t##_time += (tmp > 0 ? tmp : 0); \
} while(0)
#define BM_TIME_PRINTER(str,time) do { \
int min,sec,milli,micro; \
BM_TIMER_T tmp; \
tmp = (time) / 1000; \
micro = tmp % 1000; \
tmp /= 1000; \
milli = tmp % 1000; \
tmp /= 1000; \
sec = tmp % 60; \
min = tmp / 60; \
erts_fprintf(file,str": %d:%02d.%03d %03d\n",min,sec,milli,micro); \
} while(0)
extern BM_TIMER_T system_clock;
#endif /* USE_PERFCTR */
extern BM_TIMER_T timer_time;
extern BM_TIMER_T system_time;
extern BM_TIMER_T gc_time;
extern BM_TIMER_T minor_gc_time;
extern BM_TIMER_T major_gc_time;
extern BM_TIMER_T minor_global_gc_time;
extern BM_TIMER_T major_global_gc_time;
extern BM_TIMER_T send_time;
extern BM_TIMER_T copy_time;
extern BM_TIMER_T size_time;
extern BM_TIMER_T max_minor_time;
extern BM_TIMER_T max_major_time;
extern BM_TIMER_T max_global_minor_time;
extern BM_TIMER_T max_global_major_time;
extern BM_TIMER_T misc0_time;
extern BM_TIMER_T misc1_time;
extern BM_TIMER_T misc2_time;
#define MAX_PAUSE_TIME 500000
extern unsigned long local_pause_times[MAX_PAUSE_TIME];
extern unsigned long pause_times[MAX_PAUSE_TIME];
extern unsigned long pause_times_old[MAX_PAUSE_TIME];
#define MMU_INTERVAL 5 /* milli seconds */
extern BM_TIMER_T mmu_counter;
extern BM_TIMER_T mmu;
#define BM_NEW_TIMER(t) BM_TIMER_T t##_time = 0;
#define BM_RESET_TIMER(t) t##_time = 0;
#define BM_SWAP_TIMER(t1,t2) do { BM_STOP_TIMER(t1); BM_START_TIMER(t2); } while(0)
#define BM_MMU_INIT() do { \
BM_TIMER_T gc = gc_time; \
while (gc > 0) { \
if (gc > MMU_INTERVAL) { \
gc -= MMU_INTERVAL - mmu_counter; \
erts_printf("%d\n",(int)((mmu / MMU_INTERVAL) * 100)); \
mmu_counter = 0; mmu = 0; \
} else { \
mmu_counter += gc; \
if (mmu_counter >= MMU_INTERVAL) { \
mmu_counter -= MMU_INTERVAL; \
erts_printf("%d\n",(int)((mmu / MMU_INTERVAL) * 100)); \
mmu = 0; \
} \
gc = 0; \
} \
} \
BM_RESET_TIMER(system); \
BM_RESET_TIMER(send); \
BM_RESET_TIMER(copy); \
BM_RESET_TIMER(size); \
} while(0)
#define BM_MMU_READ() do { \
BM_TIMER_T mut = system_time + send_time + copy_time + size_time; \
while (mut > 0) { \
if (mut > MMU_INTERVAL) { \
BM_TIMER_T tmp = MMU_INTERVAL - mmu_counter; \
mmu += tmp; mut -= tmp; \
erts_printf("%d\n",(int)((mmu / MMU_INTERVAL) * 100)); \
mmu_counter = 0; mmu = 0; \
} else { \
mmu_counter += mut; mmu += mut; \
if (mmu_counter >= MMU_INTERVAL) { \
mmu_counter -= MMU_INTERVAL; \
mmu -= mmu_counter; \
erts_printf("%d\n",(int)((mmu / MMU_INTERVAL) * 100)); \
mmu = mmu_counter; \
} \
mut = 0; \
} \
} \
} while(0)
#else /* !BM_TIMERS */
# define BM_NEW_TIMER(t)
# define BM_START_TIMER(t)
# define BM_STOP_TIMER(t)
# define BM_RESET_TIMER(t)
# define BM_SWAP_TIMER(t1,t2)
# define BM_TIME_PRINTER(str,time)
# define BM_MMU_INIT()
# define BM_MMU_READ()
#endif /* BM_TIMERS */
#ifdef BM_HEAP_SIZES
extern unsigned long long max_used_heap;
extern unsigned long long max_allocated_heap;
extern unsigned long long max_used_global_heap;
extern unsigned long long max_allocated_global_heap;
#endif /* BM_HEAP_SIZES */
#ifdef BM_MESSAGE_SIZES
extern unsigned long long words_sent;
extern unsigned long long words_copied;
extern unsigned long long words_prealloc;
extern unsigned long long message_sizes[1000];
#define BM_MESSAGE_COPIED(size) { \
words_copied += size; \
BM_COUNT(messages_copied); }
#define BM_PREALLOC_DATA(size) { \
words_prealloc += size; }
#define BM_MESSAGE(mess,send,rec) { \
Uint msize = size_object(mess); \
words_sent += msize; \
if (msize < 1000) \
message_sizes[msize]++; \
else \
message_sizes[999]++; \
BM_EGO_COUNT(send,rec); \
BM_COUNT(messages_sent); }
#else /* !BM_MESSAGE_SIZES */
#define BM_MESSAGE_COPIED(size) BM_COUNT(messages_copied);
#define BM_PREALLOC_DATA(size)
#define BM_MESSAGE(mess,send,rec) { \
BM_EGO_COUNT(send,rec); \
BM_COUNT(messages_sent); }
#endif /* BM_MESSAGE_SIZES */
void init_benchmarking(void);
void save_statistics(void);
#endif /* _BENCHMARK_H_ */
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