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| author | Rickard Green <[email protected]> | 2010-09-06 10:53:27 +0200 |
|---|---|---|
| committer | Rickard Green <[email protected]> | 2010-09-06 10:53:27 +0200 |
| commit | ac64f33f2baf717ce77337069d434d25c37d46cf (patch) | |
| tree | 9119b9695a4c943fd3b361aebc419dededa17832 /erts/emulator/beam/erl_init.c | |
| parent | d834040eeb1383157320a650984a47bb02bbb2d1 (diff) | |
| parent | d8e862b5b4a354bdeee2d2b4d6d46024d4aabb0e (diff) | |
| download | otp-ac64f33f2baf717ce77337069d434d25c37d46cf.tar.gz otp-ac64f33f2baf717ce77337069d434d25c37d46cf.tar.bz2 otp-ac64f33f2baf717ce77337069d434d25c37d46cf.zip | |
Merge branch 'rickard/scheduler-wakeup-threshold/OTP-8811' into dev
* rickard/scheduler-wakeup-threshold/OTP-8811:
Add scheduler wakup threshold as command line argument
Lower the scheduler wakeup threshold
Diffstat (limited to 'erts/emulator/beam/erl_init.c')
| -rw-r--r-- | erts/emulator/beam/erl_init.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c index 14bd10b42c..4ae656a3ad 100644 --- a/erts/emulator/beam/erl_init.c +++ b/erts/emulator/beam/erl_init.c @@ -512,6 +512,8 @@ void erts_usage(void) erts_fprintf(stderr, " u|ns|ts|ps|s|nnts|nnps|tnnps|db\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, "-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, @@ -1176,10 +1178,20 @@ erl_start(int argc, char **argv) } else if (sys_strcmp("mrq", sub_param) == 0) use_multi_run_queue = 1; - else if (sys_strcmp("srq", sub_param) == 0) - use_multi_run_queue = 0; else if (sys_strcmp("nsp", sub_param) == 0) erts_use_sender_punish = 0; + else if (sys_strcmp("srq", sub_param) == 0) + use_multi_run_queue = 0; + else if (sys_strcmp("wt", sub_param) == 0) { + arg = get_arg(sub_param+2, argv[i+1], &i); + if (erts_sched_set_wakeup_limit(arg) != 0) { + erts_fprintf(stderr, "scheduler wakeup threshold: %s\n", + arg); + erts_usage(); + } + VERBOSE(DEBUG_SYSTEM, + ("scheduler wakup threshold: %s\n", arg)); + } else if (has_prefix("ss", sub_param)) { /* suggested stack size (Kilo Words) for scheduler threads */ arg = get_arg(sub_param+2, argv[i+1], &i); |