sysctl 625 event/modules/ngx_rtsig_module.c if (sysctl(name, 2, &rtsig_max, &len, NULL, 0) == -1) { sysctl 635 event/modules/ngx_rtsig_module.c if (sysctl(name, 2, &rtsig_nr, &len, NULL, 0) == -1) { sysctl 58 os/unix/ngx_linux_init.c if (sysctl(name, 2, &ngx_linux_rtsig_max, &len, NULL, 0) == -1) {