--- a/src/os/unix/ngx_process_cycle.c
+++ b/src/os/unix/ngx_process_cycle.c
@@ -23,10 +23,6 @@ static void ngx_worker_process_cycle(ngx
 static void ngx_worker_process_init(ngx_cycle_t *cycle, ngx_int_t worker);
 static void ngx_worker_process_exit(ngx_cycle_t *cycle);
 static void ngx_channel_handler(ngx_event_t *ev);
-#if (NGX_OLD_THREADS)
-static void ngx_wakeup_worker_threads(ngx_cycle_t *cycle);
-static ngx_thread_value_t ngx_worker_thread_cycle(void *data);
-#endif
 static void ngx_cache_manager_process_cycle(ngx_cycle_t *cycle, void *data);
 static void ngx_cache_manager_process_handler(ngx_event_t *ev);
 static void ngx_cache_loader_process_handler(ngx_event_t *ev);
@@ -56,12 +52,6 @@ ngx_uint_t    ngx_noaccepting;
 ngx_uint_t    ngx_restart;
 
 
-#if (NGX_OLD_THREADS)
-volatile ngx_thread_t  ngx_threads[NGX_MAX_THREADS];
-ngx_int_t              ngx_threads_n;
-#endif
-
-
 static u_char  master_process[] = "master process";
 
 
@@ -747,52 +737,6 @@ ngx_worker_process_cycle(ngx_cycle_t *cy
 
     ngx_setproctitle("worker process");
 
-#if (NGX_OLD_THREADS)
-    {
-    ngx_int_t         n;
-    ngx_err_t         err;
-    ngx_core_conf_t  *ccf;
-
-    ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
-
-    if (ngx_threads_n) {
-        if (ngx_init_threads(ngx_threads_n, ccf->thread_stack_size, cycle)
-            == NGX_ERROR)
-        {
-            /* fatal */
-            exit(2);
-        }
-
-        err = ngx_thread_key_create(&ngx_core_tls_key);
-        if (err != 0) {
-            ngx_log_error(NGX_LOG_ALERT, cycle->log, err,
-                          ngx_thread_key_create_n " failed");
-            /* fatal */
-            exit(2);
-        }
-
-        for (n = 0; n < ngx_threads_n; n++) {
-
-            ngx_threads[n].cv = ngx_cond_init(cycle->log);
-
-            if (ngx_threads[n].cv == NULL) {
-                /* fatal */
-                exit(2);
-            }
-
-            if (ngx_create_thread((ngx_tid_t *) &ngx_threads[n].tid,
-                                  ngx_worker_thread_cycle,
-                                  (void *) &ngx_threads[n], cycle->log)
-                != 0)
-            {
-                /* fatal */
-                exit(2);
-            }
-        }
-    }
-    }
-#endif
-
     for ( ;; ) {
 
         if (ngx_exiting) {
@@ -1032,12 +976,6 @@ ngx_worker_process_exit(ngx_cycle_t *cyc
     ngx_uint_t         i;
     ngx_connection_t  *c;
 
-#if (NGX_OLD_THREADS)
-    ngx_terminate = 1;
-
-    ngx_wakeup_worker_threads(cycle);
-#endif
-
     for (i = 0; ngx_modules[i]; i++) {
         if (ngx_modules[i]->exit_process) {
             ngx_modules[i]->exit_process(cycle);
@@ -1181,132 +1119,6 @@ ngx_channel_handler(ngx_event_t *ev)
 }
 
 
-#if (NGX_OLD_THREADS)
-
-static void
-ngx_wakeup_worker_threads(ngx_cycle_t *cycle)
-{
-    ngx_int_t   i;
-    ngx_uint_t  live;
-
-    for ( ;; ) {
-
-        live = 0;
-
-        for (i = 0; i < ngx_threads_n; i++) {
-            if (ngx_threads[i].state < NGX_THREAD_EXIT) {
-                if (ngx_cond_signal(ngx_threads[i].cv) == NGX_ERROR) {
-                    ngx_threads[i].state = NGX_THREAD_DONE;
-
-                } else {
-                    live = 1;
-                }
-            }
-
-            if (ngx_threads[i].state == NGX_THREAD_EXIT) {
-                ngx_thread_join(ngx_threads[i].tid, NULL);
-                ngx_threads[i].state = NGX_THREAD_DONE;
-            }
-        }
-
-        if (live == 0) {
-            ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0,
-                           "all worker threads are joined");
-
-            /* STUB */
-            ngx_done_events(cycle);
-
-            return;
-        }
-
-        ngx_sched_yield();
-    }
-}
-
-
-static ngx_thread_value_t
-ngx_worker_thread_cycle(void *data)
-{
-    ngx_thread_t  *thr = data;
-
-    sigset_t          set;
-    ngx_err_t         err;
-    ngx_core_tls_t   *tls;
-    ngx_cycle_t      *cycle;
-
-    cycle = (ngx_cycle_t *) ngx_cycle;
-
-    sigemptyset(&set);
-    sigaddset(&set, ngx_signal_value(NGX_RECONFIGURE_SIGNAL));
-    sigaddset(&set, ngx_signal_value(NGX_REOPEN_SIGNAL));
-    sigaddset(&set, ngx_signal_value(NGX_CHANGEBIN_SIGNAL));
-
-    err = ngx_thread_sigmask(SIG_BLOCK, &set, NULL);
-    if (err) {
-        ngx_log_error(NGX_LOG_ALERT, cycle->log, err,
-                      ngx_thread_sigmask_n " failed");
-        return (ngx_thread_value_t) 1;
-    }
-
-    ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0,
-                   "thread " NGX_TID_T_FMT " started", ngx_thread_self());
-
-    ngx_setthrtitle("worker thread");
-
-    tls = ngx_calloc(sizeof(ngx_core_tls_t), cycle->log);
-    if (tls == NULL) {
-        return (ngx_thread_value_t) 1;
-    }
-
-    err = ngx_thread_set_tls(ngx_core_tls_key, tls);
-    if (err != 0) {
-        ngx_log_error(NGX_LOG_ALERT, cycle->log, err,
-                      ngx_thread_set_tls_n " failed");
-        return (ngx_thread_value_t) 1;
-    }
-
-    for ( ;; ) {
-        thr->state = NGX_THREAD_FREE;
-
-#if 0
-        if (ngx_cond_wait(thr->cv, ngx_posted_events_mutex) == NGX_ERROR) {
-            return (ngx_thread_value_t) 1;
-        }
-#endif
-
-        if (ngx_terminate) {
-            thr->state = NGX_THREAD_EXIT;
-
-            ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0,
-                           "thread " NGX_TID_T_FMT " is done",
-                           ngx_thread_self());
-
-            return (ngx_thread_value_t) 0;
-        }
-
-        thr->state = NGX_THREAD_BUSY;
-
-#if 0
-        if (ngx_event_thread_process_posted(cycle) == NGX_ERROR) {
-            return (ngx_thread_value_t) 1;
-        }
-
-        if (ngx_event_thread_process_posted(cycle) == NGX_ERROR) {
-            return (ngx_thread_value_t) 1;
-        }
-#endif
-
-        if (ngx_process_changes) {
-            if (ngx_process_changes(cycle, 1) == NGX_ERROR) {
-                return (ngx_thread_value_t) 1;
-            }
-        }
-    }
-}
-
-#endif
-
-
 static void
 ngx_cache_manager_process_cycle(ngx_cycle_t *cycle, void *data)
 {