diff options
Diffstat (limited to 'thread_pthread.c')
| -rw-r--r-- | thread_pthread.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/thread_pthread.c b/thread_pthread.c index 6e3ce8ef87..5b5329fd21 100644 --- a/thread_pthread.c +++ b/thread_pthread.c @@ -1799,7 +1799,12 @@ ruby_mn_threads_params(void) main_ractor->threads.sched.enable_mn_threads = enable_mn_threads; const char *max_cpu_cstr = getenv("RUBY_MAX_CPU"); - const int default_max_cpu = 8; // TODO: CPU num? +#if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN) + long nprocessors = sysconf(_SC_NPROCESSORS_ONLN); + const int default_max_cpu = (nprocessors > 0) ? (int)nprocessors : 8; +#else + const int default_max_cpu = 8; +#endif int max_cpu = default_max_cpu; if (USE_MN_THREADS && max_cpu_cstr) { |