diff --git a/src/applet/crontab.c b/src/applet/crontab.c
index 9aa9604..ddd18d7 100644
--- a/src/applet/crontab.c
+++ b/src/applet/crontab.c
@@ -27,6 +27,7 @@ void crontab_dump(crontab *info) { // show crontab options in debug log
 
 process* crontab_load(crontab *info) { // load crontab options
     crontab_dump(info);
+    // TODO: use getpid()
     char *cron_cmd = string_join(info->cron, " kill -14 $(ps -o pid,comm | grep cleardns | awk '{print $1}')");
     save_file("/var/spool/cron/crontabs/root", cron_cmd); // SIGALRM -> 14
     free(cron_cmd);
diff --git a/src/cleardns.c b/src/cleardns.c
index d69f339..8ca9c17 100644
--- a/src/cleardns.c
+++ b/src/cleardns.c
@@ -108,9 +108,7 @@ void cleardns() { // cleardns service
 
     process_list_run(); // start all process
     if (loader.crond != NULL) { // assets not disabled
-        pid_t my_pid = getpid();
-        log_info("ClearDNS PID -> %d", my_pid);
-        kill(my_pid, SIGALRM); // send alarm signal to itself
+        kill(getpid(), SIGALRM); // send alarm signal to cleardns
         crontab_free(loader.crond);
     }
     process_list_daemon(); // daemon all process
diff --git a/src/utils/process.c b/src/utils/process.c
index a37f2cd..c48c886 100644
--- a/src/utils/process.c
+++ b/src/utils/process.c
@@ -15,8 +15,8 @@
 
 process **process_list;
 
-uint8_t EXITING = FALSE;
 uint8_t EXITED = FALSE;
+uint8_t EXITING = FALSE;
 
 void get_sub_exit();
 void get_exit_signal();
@@ -93,7 +93,6 @@ void process_list_run() { // start process list
     signal(SIGCHLD, get_sub_exit); // callback when child process die
     for (process **proc = process_list; *proc != NULL; ++proc) {
         process_exec(*proc);
-        usleep(50 * 1000); // delay 50ms
     }
     log_info("Process start complete");
 }
@@ -152,7 +151,7 @@ void get_sub_exit() { // catch child process exit
         return;
     }
     int status;
-    log_debug("Handle sub-process start");
+    log_debug("Handle SIGCHLD start");
     for (process **proc = process_list; *proc != NULL; ++proc) {
         if ((*proc)->pid == 0) {
             continue; // skip not running process
@@ -165,9 +164,9 @@ void get_sub_exit() { // catch child process exit
             char *exit_msg = get_exit_msg(status);
             log_warn("%s (PID = %d) -> %s", (*proc)->name, (*proc)->pid, exit_msg);
             free(exit_msg);
+            // TODO: delay with global const
             sleep(1); // reduce restart frequency
             process_exec(*proc);
-            usleep(50 * 1000); // delay 50ms
             log_info("%s restart complete", (*proc)->name);
             return; // skip following check
         }
@@ -181,5 +180,5 @@ void get_sub_exit() { // catch child process exit
         log_debug("Sub-process (PID = %d) -> %s", wait_ret, exit_msg);
         free(exit_msg);
     }
-    log_debug("Handle sub-process complete");
+    log_debug("Handle SIGCHLD complete");
 }