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-rw-r--r--erts/emulator/beam/erl_init.c304
1 files changed, 236 insertions, 68 deletions
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 19088fd913..c17256f466 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -484,98 +484,107 @@ void erts_usage(void)
/* erts_fprintf(stderr, "-# number set the number of items to be used in traces etc\n"); */
- erts_fprintf(stderr, "-a size suggested stack size in kilo words for threads\n");
- erts_fprintf(stderr, " in the async-thread pool, valid range is [%d-%d]\n",
+ erts_fprintf(stderr, "-a size suggested stack size in kilo words for threads\n");
+ erts_fprintf(stderr, " in the async-thread pool, valid range is [%d-%d]\n",
ERTS_ASYNC_THREAD_MIN_STACK_SIZE,
ERTS_ASYNC_THREAD_MAX_STACK_SIZE);
- erts_fprintf(stderr, "-A number set number of threads in async thread pool,\n");
- erts_fprintf(stderr, " valid range is [0-%d]\n",
+ erts_fprintf(stderr, "-A number set number of threads in async thread pool,\n");
+ erts_fprintf(stderr, " valid range is [0-%d]\n",
ERTS_MAX_NO_OF_ASYNC_THREADS);
- erts_fprintf(stderr, "-B[c|d|i] c to have Ctrl-c interrupt the Erlang shell,\n");
- erts_fprintf(stderr, " d (or no extra option) to disable the break\n");
- erts_fprintf(stderr, " handler, i to ignore break signals\n");
+ erts_fprintf(stderr, "-B[c|d|i] c to have Ctrl-c interrupt the Erlang shell,\n");
+ erts_fprintf(stderr, " d (or no extra option) to disable the break\n");
+ erts_fprintf(stderr, " handler, i to ignore break signals\n");
/* erts_fprintf(stderr, "-b func set the boot function (default boot)\n"); */
- erts_fprintf(stderr, "-c disable continuous date/time correction with\n");
- erts_fprintf(stderr, " respect to uptime\n");
+ erts_fprintf(stderr, "-c disable continuous date/time correction with\n");
+ erts_fprintf(stderr, " respect to uptime\n");
- erts_fprintf(stderr, "-d don't write a crash dump for internally detected errors\n");
- erts_fprintf(stderr, " (halt(String) will still produce a crash dump)\n");
- erts_fprintf(stderr, "-fn[u|a|l] Control how filenames are interpreted\n");
- erts_fprintf(stderr, "-hms size set minimum heap size in words (default %d)\n",
+ erts_fprintf(stderr, "-d don't write a crash dump for internally detected errors\n");
+ erts_fprintf(stderr, " (halt(String) will still produce a crash dump)\n");
+ erts_fprintf(stderr, "-fn[u|a|l] Control how filenames are interpreted\n");
+ erts_fprintf(stderr, "-hms size set minimum heap size in words (default %d)\n",
H_DEFAULT_SIZE);
- erts_fprintf(stderr, "-hmbs size set minimum binary virtual heap size in words (default %d)\n",
+ erts_fprintf(stderr, "-hmbs size set minimum binary virtual heap size in words (default %d)\n",
VH_DEFAULT_SIZE);
/* erts_fprintf(stderr, "-i module set the boot module (default init)\n"); */
- erts_fprintf(stderr, "-K boolean enable or disable kernel poll\n");
- erts_fprintf(stderr, "-n[s|a|d] Control behavior of signals to ports\n");
- erts_fprintf(stderr, " Note that this flag is deprecated!\n");
- erts_fprintf(stderr, "-M<X> <Y> memory allocator switches,\n");
- erts_fprintf(stderr, " see the erts_alloc(3) documentation for more info.\n");
- erts_fprintf(stderr, "-pc <set> Control what characters are considered printable (default latin1)\n");
- erts_fprintf(stderr, "-P number set maximum number of processes on this node,\n");
- erts_fprintf(stderr, " valid range is [%d-%d]\n",
+ erts_fprintf(stderr, "-K boolean enable or disable kernel poll\n");
+ erts_fprintf(stderr, "-n[s|a|d] Control behavior of signals to ports\n");
+ erts_fprintf(stderr, " Note that this flag is deprecated!\n");
+ erts_fprintf(stderr, "-M<X> <Y> memory allocator switches,\n");
+ erts_fprintf(stderr, " see the erts_alloc(3) documentation for more info.\n");
+ erts_fprintf(stderr, "-pc <set> Control what characters are considered printable (default latin1)\n");
+ erts_fprintf(stderr, "-P number set maximum number of processes on this node,\n");
+ erts_fprintf(stderr, " valid range is [%d-%d]\n",
ERTS_MIN_PROCESSES, ERTS_MAX_PROCESSES);
- erts_fprintf(stderr, "-Q number set maximum number of ports on this node,\n");
- erts_fprintf(stderr, " valid range is [%d-%d]\n",
+ erts_fprintf(stderr, "-Q number set maximum number of ports on this node,\n");
+ erts_fprintf(stderr, " valid range is [%d-%d]\n",
ERTS_MIN_PORTS, ERTS_MAX_PORTS);
- erts_fprintf(stderr, "-R number set compatibility release number,\n");
- erts_fprintf(stderr, " valid range [%d-%d]\n",
+ erts_fprintf(stderr, "-R number set compatibility release number,\n");
+ erts_fprintf(stderr, " valid range [%d-%d]\n",
this_rel-2, this_rel);
- erts_fprintf(stderr, "-r force ets memory block to be moved on realloc\n");
- erts_fprintf(stderr, "-rg amount set reader groups limit\n");
- erts_fprintf(stderr, "-sbt type set scheduler bind type, valid types are:\n");
- erts_fprintf(stderr, "-stbt type u|ns|ts|ps|s|nnts|nnps|tnnps|db\n");
- erts_fprintf(stderr, "-sbwt val set scheduler busy wait threshold, valid values are:\n");
- erts_fprintf(stderr, " none|very_short|short|medium|long|very_long.\n");
- erts_fprintf(stderr, "-scl bool enable/disable compaction of scheduler load,\n");
- erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
- erts_fprintf(stderr, "-sct cput set cpu topology,\n");
- erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
+ erts_fprintf(stderr, "-r force ets memory block to be moved on realloc\n");
+ erts_fprintf(stderr, "-rg amount set reader groups limit\n");
+ erts_fprintf(stderr, "-sbt type set scheduler bind type, valid types are:\n");
+ erts_fprintf(stderr, "-stbt type u|ns|ts|ps|s|nnts|nnps|tnnps|db\n");
+ erts_fprintf(stderr, "-sbwt val set scheduler busy wait threshold, valid values are:\n");
+ erts_fprintf(stderr, " none|very_short|short|medium|long|very_long.\n");
+ erts_fprintf(stderr, "-scl bool enable/disable compaction of scheduler load,\n");
+ erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
+ erts_fprintf(stderr, "-sct cput set cpu topology,\n");
+ erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT
- erts_fprintf(stderr, "-sub bool enable/disable scheduler utilization balancing,\n");
+ erts_fprintf(stderr, "-sub bool enable/disable scheduler utilization balancing,\n");
#else
- erts_fprintf(stderr, "-sub false disable scheduler utilization balancing,\n");
+ erts_fprintf(stderr, "-sub false disable scheduler utilization balancing,\n");
#endif
- erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
- erts_fprintf(stderr, "-sws val set scheduler wakeup strategy, valid values are:\n");
- erts_fprintf(stderr, " default|legacy.\n");
- erts_fprintf(stderr, "-swct val set scheduler wake cleanup threshold, valid values are:\n");
- erts_fprintf(stderr, " very_lazy|lazy|medium|eager|very_eager.\n");
- erts_fprintf(stderr, "-swt val set scheduler wakeup threshold, valid values are:\n");
- erts_fprintf(stderr, " very_low|low|medium|high|very_high.\n");
- erts_fprintf(stderr, "-sss size suggested stack size in kilo words for scheduler threads,\n");
- erts_fprintf(stderr, " valid range is [%d-%d]\n",
+ erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
+ erts_fprintf(stderr, "-sws val set scheduler wakeup strategy, valid values are:\n");
+ erts_fprintf(stderr, " default|legacy.\n");
+ erts_fprintf(stderr, "-swct val set scheduler wake cleanup threshold, valid values are:\n");
+ erts_fprintf(stderr, " very_lazy|lazy|medium|eager|very_eager.\n");
+ erts_fprintf(stderr, "-swt val set scheduler wakeup threshold, valid values are:\n");
+ erts_fprintf(stderr, " very_low|low|medium|high|very_high.\n");
+ erts_fprintf(stderr, "-sss size suggested stack size in kilo words for scheduler threads,\n");
+ erts_fprintf(stderr, " valid range is [%d-%d]\n",
ERTS_SCHED_THREAD_MIN_STACK_SIZE,
ERTS_SCHED_THREAD_MAX_STACK_SIZE);
- erts_fprintf(stderr, "-spp Bool set port parallelism scheduling hint\n");
- erts_fprintf(stderr, "-S n1:n2 set number of schedulers (n1), and number of\n");
- erts_fprintf(stderr, " schedulers online (n2), maximum for both\n");
- erts_fprintf(stderr, " numbers is %d\n",
+ erts_fprintf(stderr, "-spp Bool set port parallelism scheduling hint\n");
+ erts_fprintf(stderr, "-S n1:n2 set number of schedulers (n1), and number of\n");
+ erts_fprintf(stderr, " schedulers online (n2), maximum for both\n");
+ erts_fprintf(stderr, " numbers is %d\n",
ERTS_MAX_NO_OF_SCHEDULERS);
- erts_fprintf(stderr, "-SP p1:p2 specify schedulers (p1) and schedulers online (p2)\n");
- erts_fprintf(stderr, " as percentages of logical processors configured and logical\n");
- erts_fprintf(stderr, " processors available, respectively\n");
- erts_fprintf(stderr, "-t size set the maximum number of atoms the "
- "emulator can handle\n");
- erts_fprintf(stderr, " valid range is [%d-%d]\n",
+ erts_fprintf(stderr, "-SP p1:p2 specify schedulers (p1) and schedulers online (p2)\n");
+ erts_fprintf(stderr, " as percentages of logical processors configured and logical\n");
+ erts_fprintf(stderr, " processors available, respectively\n");
+#ifdef ERTS_DIRTY_SCHEDULERS
+ erts_fprintf(stderr, "-SDcpu n1:n2 set number of dirty CPU schedulers (n1), and number of\n");
+ erts_fprintf(stderr, " dirty CPU schedulers online (n2), valid range for both\n");
+ erts_fprintf(stderr, " numbers is [1-%d], and n2 must be less than or equal to n1\n",
+ ERTS_MAX_NO_OF_DIRTY_CPU_SCHEDULERS);
+ erts_fprintf(stderr, "-SDPcpu p1:p2 specify dirty CPU schedulers (p1) and dirty CPU schedulers\n");
+ erts_fprintf(stderr, " online (p2) as percentages of logical processors configured\n");
+ erts_fprintf(stderr, " and logical processors available, respectively\n");
+ erts_fprintf(stderr, "-SDio n set number of dirty I/O schedulers, valid range is [0-%d]\n",
+ ERTS_MAX_NO_OF_DIRTY_IO_SCHEDULERS);
+#endif
+ erts_fprintf(stderr, "-t size set the maximum number of atoms the emulator can handle\n");
+ erts_fprintf(stderr, " valid range is [%d-%d]\n",
MIN_ATOM_TABLE_SIZE, MAX_ATOM_TABLE_SIZE);
- erts_fprintf(stderr, "-T number set modified timing level,\n");
- erts_fprintf(stderr, " valid range is [0-%d]\n",
+ erts_fprintf(stderr, "-T number set modified timing level, valid range is [0-%d]\n",
ERTS_MODIFIED_TIMING_LEVELS-1);
- erts_fprintf(stderr, "-V print Erlang version\n");
+ erts_fprintf(stderr, "-V print Erlang version\n");
- erts_fprintf(stderr, "-v turn on chatty mode (GCs will be reported etc)\n");
+ erts_fprintf(stderr, "-v turn on chatty mode (GCs will be reported etc)\n");
- erts_fprintf(stderr, "-W<i|w> set error logger warnings mapping,\n");
- erts_fprintf(stderr, " see error_logger documentation for details\n");
- erts_fprintf(stderr, "-zdbbl size set the distribution buffer busy limit in kilobytes\n");
- erts_fprintf(stderr, " valid range is [1-%d]\n", INT_MAX/1024);
+ erts_fprintf(stderr, "-W<i|w> set error logger warnings mapping,\n");
+ erts_fprintf(stderr, " see error_logger documentation for details\n");
+ erts_fprintf(stderr, "-zdbbl size set the distribution buffer busy limit in kilobytes\n");
+ erts_fprintf(stderr, " valid range is [1-%d]\n", INT_MAX/1024);
erts_fprintf(stderr, "\n");
erts_fprintf(stderr, "Note that if the emulator is started with erlexec (typically\n");
erts_fprintf(stderr, "from the erl script), these flags should be specified with +.\n");
@@ -643,6 +652,13 @@ early_init(int *argc, char **argv) /*
int schdlrs_percentage = 100;
int schdlrs_onln_percentage = 100;
int max_main_threads;
+#ifdef ERTS_DIRTY_SCHEDULERS
+ int dirty_cpu_scheds;
+ int dirty_cpu_scheds_online;
+ int dirty_cpu_scheds_pctg = 100;
+ int dirty_cpu_scheds_onln_pctg = 100;
+ int dirty_io_scheds;
+#endif
int max_reader_groups;
int reader_groups;
char envbuf[21]; /* enough for any 64-bit integer */
@@ -718,6 +734,12 @@ early_init(int *argc, char **argv) /*
schdlrs = no_schedulers;
schdlrs_onln = no_schedulers_online;
+#ifdef ERTS_DIRTY_SCHEDULERS
+ dirty_cpu_scheds = no_schedulers;
+ dirty_cpu_scheds_online = no_schedulers_online;
+ dirty_io_scheds = 10;
+#endif
+
envbufsz = sizeof(envbuf);
/* erts_sys_getenv(_raw)() not initialized yet; need erts_sys_getenv__() */
@@ -808,7 +830,121 @@ early_init(int *argc, char **argv) /*
VERBOSE(DEBUG_SYSTEM,
("using %d:%d scheduler percentages\n",
schdlrs_percentage, schdlrs_onln_percentage));
- } else {
+ }
+#ifdef ERTS_DIRTY_SCHEDULERS
+ else if (argv[i][2] == 'D') {
+ char *arg;
+ char *type = argv[i]+3;
+ if (strcmp(type, "Pcpu") == 0) {
+ int ptot, ponln;
+ arg = get_arg(argv[i]+7, argv[i+1], &i);
+ switch (sscanf(arg, "%d:%d", &ptot, &ponln)) {
+ case 0:
+ switch (sscanf(arg, ":%d", &ponln)) {
+ case 1:
+ if (ponln < 0)
+ goto bad_SDPcpu;
+ ptot = 100;
+ goto chk_SDPcpu;
+ default:
+ goto bad_SDPcpu;
+ }
+ case 1:
+ if (ptot < 0)
+ goto bad_SDPcpu;
+ ponln = ptot < 100 ? ptot : 100;
+ goto chk_SDPcpu;
+ case 2:
+ if (ptot < 0 || ponln < 0)
+ goto bad_SDPcpu;
+ chk_SDPcpu:
+ dirty_cpu_scheds_pctg = ptot;
+ dirty_cpu_scheds_onln_pctg = ponln;
+ break;
+ default:
+ bad_SDPcpu:
+ erts_fprintf(stderr,
+ "bad dirty CPU schedulers percentage specifier %s\n",
+ arg);
+ erts_usage();
+ break;
+ }
+ VERBOSE(DEBUG_SYSTEM,
+ ("using %d:%d dirty CPU scheduler percentages\n",
+ dirty_cpu_scheds_pctg, dirty_cpu_scheds_onln_pctg));
+ } else if (strcmp(type, "cpu") == 0) {
+ int tot, onln;
+ arg = get_arg(argv[i]+6, argv[i+1], &i);
+ switch (sscanf(arg, "%d:%d", &tot, &onln)) {
+ case 0:
+ switch (sscanf(arg, ":%d", &onln)) {
+ case 1:
+ tot = no_schedulers;
+ goto chk_SDcpu;
+ default:
+ goto bad_SDcpu;
+ }
+ case 1:
+ onln = tot < dirty_cpu_scheds_online ?
+ tot : dirty_cpu_scheds_online;
+ case 2:
+ chk_SDcpu:
+ if (tot > 0)
+ dirty_cpu_scheds = tot;
+ else
+ dirty_cpu_scheds = no_schedulers + tot;
+ if (onln > 0)
+ dirty_cpu_scheds_online = onln;
+ else
+ dirty_cpu_scheds_online = no_schedulers_online + onln;
+ if (dirty_cpu_scheds < 1 ||
+ ERTS_MAX_NO_OF_DIRTY_CPU_SCHEDULERS < dirty_cpu_scheds) {
+ erts_fprintf(stderr,
+ "bad amount of dirty CPU schedulers %d\n",
+ tot);
+ erts_usage();
+ }
+ if (dirty_cpu_scheds_online < 1 ||
+ dirty_cpu_scheds < dirty_cpu_scheds_online) {
+ erts_fprintf(stderr,
+ "bad amount of dirty CPU schedulers online %d "
+ "(total amount of dirty CPU schedulers %d)\n",
+ dirty_cpu_scheds_online, dirty_cpu_scheds);
+ erts_usage();
+ }
+ break;
+ default:
+ bad_SDcpu:
+ erts_fprintf(stderr,
+ "bad amount of dirty CPU schedulers %s\n",
+ arg);
+ erts_usage();
+ break;
+ }
+ VERBOSE(DEBUG_SYSTEM,
+ ("using %d:%d dirty CPU scheduler(s)\n", tot, onln));
+ } else if (strcmp(type, "io") == 0) {
+ arg = get_arg(argv[i]+5, argv[i+1], &i);
+ dirty_io_scheds = atoi(arg);
+ if (dirty_io_scheds < 0 ||
+ dirty_io_scheds > ERTS_MAX_NO_OF_DIRTY_IO_SCHEDULERS) {
+ erts_fprintf(stderr,
+ "bad number of dirty I/O schedulers %s\n",
+ arg);
+ erts_usage();
+ }
+ VERBOSE(DEBUG_SYSTEM,
+ ("using %d dirty I/O scheduler(s)\n", dirty_io_scheds));
+ } else {
+ erts_fprintf(stderr,
+ "bad or missing dirty scheduler specifier: %s\n",
+ argv[i]);
+ erts_usage();
+ break;
+ }
+ }
+#endif
+ else {
int tot, onln;
char *arg = get_arg(argv[i]+2, argv[i+1], &i);
switch (sscanf(arg, "%d:%d", &tot, &onln)) {
@@ -895,6 +1031,17 @@ early_init(int *argc, char **argv) /*
(void)schdlrs_percentage;
(void)schdlrs_onln_percentage;
#endif
+#ifdef ERTS_DIRTY_SCHEDULERS
+ /* apply any dirty scheduler precentages */
+ if (dirty_cpu_scheds_pctg != 100 || dirty_cpu_scheds_onln_pctg != 100) {
+ dirty_cpu_scheds = dirty_cpu_scheds * dirty_cpu_scheds_pctg / 100;
+ dirty_cpu_scheds_online = dirty_cpu_scheds_online * dirty_cpu_scheds_onln_pctg / 100;
+ }
+ if (dirty_cpu_scheds > schdlrs)
+ dirty_cpu_scheds = schdlrs;
+ if (dirty_cpu_scheds_online > schdlrs_onln)
+ dirty_cpu_scheds_online = schdlrs_onln;
+#endif
}
#ifndef USE_THREADS
@@ -907,6 +1054,11 @@ early_init(int *argc, char **argv) /*
erts_no_schedulers = (Uint) no_schedulers;
#endif
+#ifdef ERTS_DIRTY_SCHEDULERS
+ erts_no_dirty_cpu_schedulers = dirty_cpu_scheds;
+ erts_no_dirty_cpu_schedulers_online = dirty_cpu_scheds_online;
+ erts_no_dirty_io_schedulers = dirty_io_scheds;
+#endif
erts_early_init_scheduling(no_schedulers);
alloc_opts.ncpu = ncpu;
@@ -924,10 +1076,18 @@ early_init(int *argc, char **argv) /*
*
* * Unmanaged threads that need to register:
* ** Async threads (see erl_async.c)
+ * ** Dirty scheduler threads
*/
erts_thr_progress_init(no_schedulers,
no_schedulers+2,
- erts_async_max_threads);
+#ifndef ERTS_DIRTY_SCHEDULERS
+ erts_async_max_threads
+#else
+ erts_async_max_threads +
+ erts_no_dirty_cpu_schedulers +
+ erts_no_dirty_io_schedulers
+#endif
+ );
#endif
erts_thr_q_init();
erts_init_utils();
@@ -1392,7 +1552,15 @@ erl_start(int argc, char **argv)
break;
case 'S' : /* Was handled in early_init() just read past it */
- if (argv[i][2] == 'P')
+ if (argv[i][2] == 'D') {
+ char* type = argv[i]+3;
+ if (strcmp(type, "Pcpu") == 0)
+ (void) get_arg(argv[i]+7, argv[i+1], &i);
+ if (strcmp(type, "cpu") == 0)
+ (void) get_arg(argv[i]+6, argv[i+1], &i);
+ else if (strcmp(type, "io") == 0)
+ (void) get_arg(argv[i]+5, argv[i+1], &i);
+ } else if (argv[i][2] == 'P')
(void) get_arg(argv[i]+3, argv[i+1], &i);
else
(void) get_arg(argv[i]+2, argv[i+1], &i);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-12 23:53:00 +0000