X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvlib%2Fthreads.c;h=8a06887561785a755e2c28de7ae6808472830718;hb=f617b145ebc2f6ea2ad9bc3b6fa26968a0493821;hp=52886df37e0c6e47b7e80da008e228bdffee356a;hpb=9ae190e9d228bfc1358482d4f07da1f4cfd41c90;p=vpp.git diff --git a/src/vlib/threads.c b/src/vlib/threads.c index 52886df37e0..8a068875617 100644 --- a/src/vlib/threads.c +++ b/src/vlib/threads.c @@ -23,9 +23,10 @@ #include #include +#include + DECLARE_CJ_GLOBAL_LOG; -#define FRAME_QUEUE_NELTS 64 u32 vl (void *p) @@ -43,28 +44,6 @@ vlib_thread_main_t vlib_thread_main; * imapacts observed timings. */ -u32 -elog_global_id_for_msg_name (const char *msg_name) -{ - uword *p, r; - static uword *h; - u8 *name_copy; - - if (!h) - h = hash_create_string (0, sizeof (uword)); - - p = hash_get_mem (h, msg_name); - if (p) - return p[0]; - r = elog_string (&vlib_global_main.elog_main, "%s", msg_name); - - name_copy = format (0, "%s%c", msg_name, 0); - - hash_set_mem (h, name_copy, r); - - return r; -} - static inline void barrier_trace_sync (f64 t_entry, f64 t_open, f64 t_closed) { @@ -85,8 +64,8 @@ barrier_trace_sync (f64 t_entry, f64 t_open, f64 t_closed) ed = ELOG_DATA (&vlib_global_main.elog_main, e); ed->count = (int) vlib_worker_threads[0].barrier_sync_count; - ed->caller = elog_global_id_for_msg_name - (vlib_worker_threads[0].barrier_caller); + ed->caller = elog_string (&vlib_global_main.elog_main, + (char *) vlib_worker_threads[0].barrier_caller); ed->t_entry = (int) (1000000.0 * t_entry); ed->t_open = (int) (1000000.0 * t_open); ed->t_closed = (int) (1000000.0 * t_closed); @@ -112,8 +91,8 @@ barrier_trace_sync_rec (f64 t_entry) ed = ELOG_DATA (&vlib_global_main.elog_main, e); ed->depth = (int) vlib_worker_threads[0].recursion_level - 1; - ed->caller = elog_global_id_for_msg_name - (vlib_worker_threads[0].barrier_caller); + ed->caller = elog_string (&vlib_global_main.elog_main, + (char *) vlib_worker_threads[0].barrier_caller); } static inline void @@ -169,13 +148,7 @@ barrier_trace_release (f64 t_entry, f64 t_closed_total, f64 t_update_main) uword os_get_nthreads (void) { - u32 len; - - len = vec_len (vlib_thread_stacks); - if (len == 0) - return 1; - else - return len; + return vec_len (vlib_thread_stacks); } void @@ -299,11 +272,8 @@ vlib_thread_init (vlib_main_t * vm) pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset); } - /* as many threads as stacks... */ - vec_validate_aligned (vlib_worker_threads, vec_len (vlib_thread_stacks) - 1, - CLIB_CACHE_LINE_BYTES); - - /* Preallocate thread 0 */ + /* Set up thread 0 */ + vec_validate_aligned (vlib_worker_threads, 0, CLIB_CACHE_LINE_BYTES); _vec_len (vlib_worker_threads) = 1; w = vlib_worker_threads; w->thread_mheap = clib_mem_get_heap (); @@ -313,6 +283,8 @@ vlib_thread_init (vlib_main_t * vm) w->thread_id = pthread_self (); tm->n_vlib_mains = 1; + vlib_get_thread_core_numa (w, w->cpu_id); + if (tm->sched_policy != ~0) { struct sched_param sched_param; @@ -358,8 +330,7 @@ vlib_thread_init (vlib_main_t * vm) avail_cpu = clib_bitmap_set(avail_cpu, c, 0); })); -/* *INDENT-ON* */ - + /* *INDENT-ON* */ } else { @@ -381,9 +352,14 @@ vlib_thread_init (vlib_main_t * vm) tm->n_vlib_mains = n_vlib_mains; + /* + * Allocate the remaining worker threads, and thread stack vector slots + * from now on, calls to os_get_nthreads() will return the correct + * answer. + */ vec_validate_aligned (vlib_worker_threads, first_index - 1, CLIB_CACHE_LINE_BYTES); - + vec_validate (vlib_thread_stacks, vec_len (vlib_worker_threads) - 1); return 0; } @@ -603,12 +579,12 @@ vlib_worker_thread_bootstrap_fn (void *arg) return rv; } -static void -vlib_get_thread_core_socket (vlib_worker_thread_t * w, unsigned cpu_id) +void +vlib_get_thread_core_numa (vlib_worker_thread_t * w, unsigned cpu_id) { const char *sys_cpu_path = "/sys/devices/system/cpu/cpu"; u8 *p = 0; - int core_id = -1, socket_id = -1; + int core_id = -1, numa_id = -1; p = format (p, "%s%u/topology/core_id%c", sys_cpu_path, cpu_id, 0); clib_sysfs_read ((char *) p, "%d", &core_id); @@ -616,11 +592,11 @@ vlib_get_thread_core_socket (vlib_worker_thread_t * w, unsigned cpu_id) p = format (p, "%s%u/topology/physical_package_id%c", sys_cpu_path, cpu_id, 0); - clib_sysfs_read ((char *) p, "%d", &socket_id); + clib_sysfs_read ((char *) p, "%d", &numa_id); vec_free (p); w->core_id = core_id; - w->socket_id = socket_id; + w->numa_id = numa_id; } static clib_error_t * @@ -628,9 +604,29 @@ vlib_launch_thread_int (void *fp, vlib_worker_thread_t * w, unsigned cpu_id) { vlib_thread_main_t *tm = &vlib_thread_main; void *(*fp_arg) (void *) = fp; + void *numa_heap; w->cpu_id = cpu_id; - vlib_get_thread_core_socket (w, cpu_id); + vlib_get_thread_core_numa (w, cpu_id); + os_set_numa_index (w->numa_id); + + /* Set up NUMA-bound heap if indicated */ + if (clib_per_numa_mheaps[w->numa_id] == 0) + { + /* If the user requested a NUMA heap, create it... */ + if (tm->numa_heap_size) + { + numa_heap = clib_mem_init_thread_safe_numa + (0 /* DIY */ , tm->numa_heap_size); + clib_per_numa_mheaps[w->numa_id] = numa_heap; + } + else + { + /* Or, use the main heap */ + clib_per_numa_mheaps[w->numa_id] = w->thread_mheap; + } + } + if (tm->cb.vlib_launch_thread_cb && !w->registration->use_pthreads) return tm->cb.vlib_launch_thread_cb (fp, (void *) w, cpu_id); else @@ -871,14 +867,20 @@ start_workers (vlib_main_t * vm) #ifdef VLIB_SUPPORTS_ARBITRARY_SCALAR_SIZES nm_clone->frame_size_hash = hash_create (0, sizeof (uword)); #endif + nm_clone->node_by_error = nm->node_by_error; /* Packet trace buffers are guaranteed to be empty, nothing to do here */ clib_mem_set_heap (oldheap); vec_add1_aligned (vlib_mains, vm_clone, CLIB_CACHE_LINE_BYTES); + /* Switch to the stats segment ... */ + void *oldheap = vlib_stats_push_heap (0); vm_clone->error_main.counters = vec_dup_aligned (vlib_mains[0]->error_main.counters, CLIB_CACHE_LINE_BYTES); + vlib_stats_pop_heap2 (vm_clone->error_main.counters, + worker_thread_index, oldheap, 1); + vm_clone->error_main.counters_last_clear = vec_dup_aligned (vlib_mains[0]->error_main.counters_last_clear, CLIB_CACHE_LINE_BYTES); @@ -1041,9 +1043,15 @@ vlib_worker_thread_node_refork (void) clib_memcpy_fast (&vm_clone->error_main, &vm->error_main, sizeof (vm->error_main)); j = vec_len (vm->error_main.counters) - 1; + + /* Switch to the stats segment ... */ + void *oldheap = vlib_stats_push_heap (0); vec_validate_aligned (old_counters, j, CLIB_CACHE_LINE_BYTES); - vec_validate_aligned (old_counters_all_clear, j, CLIB_CACHE_LINE_BYTES); vm_clone->error_main.counters = old_counters; + vlib_stats_pop_heap2 (vm_clone->error_main.counters, vm_clone->thread_index, + oldheap, 0); + + vec_validate_aligned (old_counters_all_clear, j, CLIB_CACHE_LINE_BYTES); vm_clone->error_main.counters_last_clear = old_counters_all_clear; nm_clone = &vm_clone->node_main; @@ -1074,11 +1082,7 @@ vlib_worker_thread_node_refork (void) clib_mem_alloc_no_fail (vec_len (nm->nodes) * sizeof (*new_n_clone)); for (j = 0; j < vec_len (nm->nodes); j++) { - vlib_node_t *old_n_clone; - vlib_node_t *new_n; - - new_n = nm->nodes[j]; - old_n_clone = old_nodes_clone[j]; + vlib_node_t *new_n = nm->nodes[j]; clib_memcpy_fast (new_n_clone, new_n, sizeof (*new_n)); /* none of the copied nodes have enqueue rights given out */ @@ -1094,6 +1098,7 @@ vlib_worker_thread_node_refork (void) } else { + vlib_node_t *old_n_clone = old_nodes_clone[j]; /* Copy stats if the old data is valid */ clib_memcpy_fast (&new_n_clone->stats_total, &old_n_clone->stats_total, @@ -1197,6 +1202,7 @@ vlib_worker_thread_node_refork (void) nm_clone->processes = vec_dup_aligned (nm->processes, CLIB_CACHE_LINE_BYTES); + nm_clone->node_by_error = nm->node_by_error; } void @@ -1258,6 +1264,9 @@ cpu_config (vlib_main_t * vm, unformat_input_t * input) ; else if (unformat (input, "skip-cores %u", &tm->skip_cores)) ; + else if (unformat (input, "numa-heap-size %U", + unformat_memory_size, &tm->numa_heap_size)) + ; else if (unformat (input, "coremask-%s %U", &name, unformat_bitmap_mask, &bitmap) || unformat (input, "corelist-%s %U", &name, @@ -1381,6 +1390,31 @@ vlib_worker_thread_fork_fixup (vlib_fork_fixup_t which) #define BARRIER_MINIMUM_OPEN_FACTOR 3 #endif +void +vlib_worker_thread_initial_barrier_sync_and_release (vlib_main_t * vm) +{ + f64 deadline; + f64 now = vlib_time_now (vm); + u32 count = vec_len (vlib_mains) - 1; + + /* No worker threads? */ + if (count == 0) + return; + + deadline = now + BARRIER_SYNC_TIMEOUT; + *vlib_worker_threads->wait_at_barrier = 1; + while (*vlib_worker_threads->workers_at_barrier != count) + { + if ((now = vlib_time_now (vm)) > deadline) + { + fformat (stderr, "%s: worker thread deadlock\n", __FUNCTION__); + os_panic (); + } + CLIB_PAUSE (); + } + *vlib_worker_threads->wait_at_barrier = 0; +} + void vlib_worker_thread_barrier_sync_int (vlib_main_t * vm, const char *func_name) { @@ -1420,7 +1454,7 @@ vlib_worker_thread_barrier_sync_int (vlib_main_t * vm, const char *func_name) for (i = 1; i < vec_len (vlib_mains); i++) max_vector_rate = clib_max (max_vector_rate, - vlib_last_vectors_per_main_loop_as_f64 (vlib_mains[i])); + (f64) vlib_last_vectors_per_main_loop (vlib_mains[i])); vlib_worker_threads[0].barrier_sync_count++; @@ -1471,18 +1505,6 @@ vlib_worker_thread_barrier_sync_int (vlib_main_t * vm, const char *func_name) } -void vlib_stat_segment_lock (void) __attribute__ ((weak)); -void -vlib_stat_segment_lock (void) -{ -} - -void vlib_stat_segment_unlock (void) __attribute__ ((weak)); -void -vlib_stat_segment_unlock (void) -{ -} - void vlib_worker_thread_barrier_release (vlib_main_t * vm) { @@ -1653,6 +1675,7 @@ vlib_frame_queue_dequeue (vlib_main_t * vm, vlib_frame_queue_main_t * fqm) while (1) { + vlib_buffer_t *b; if (fq->head == fq->tail) { fq->head_hint = fq->head; @@ -1675,6 +1698,11 @@ vlib_frame_queue_dequeue (vlib_main_t * vm, vlib_frame_queue_main_t * fqm) f = vlib_get_frame_to_node (vm, fqm->node_index); + /* If the first vector is traced, set the frame trace flag */ + b = vlib_get_buffer (vm, from[0]); + if (b->flags & VLIB_BUFFER_IS_TRACED) + f->frame_flags |= VLIB_NODE_FLAG_TRACE; + to = vlib_frame_vector_args (f); n_left_to_node = elt->n_vectors; @@ -1736,15 +1764,15 @@ vlib_worker_thread_fn (void *arg) clib_time_init (&vm->clib_time); clib_mem_set_heap (w->thread_mheap); + e = vlib_call_init_exit_functions_no_sort + (vm, &vm->worker_init_function_registrations, 1 /* call_once */ ); + if (e) + clib_error_report (e); + /* Wait until the dpdk init sequence is complete */ while (tm->extern_thread_mgmt && tm->worker_thread_release == 0) vlib_worker_thread_barrier_check (); - e = vlib_call_init_exit_functions - (vm, vm->worker_init_function_registrations, 1 /* call_once */ ); - if (e) - clib_error_report (e); - vlib_worker_loop (vm); } @@ -1765,7 +1793,7 @@ vlib_frame_queue_main_init (u32 node_index, u32 frame_queue_nelts) int i; if (frame_queue_nelts == 0) - frame_queue_nelts = FRAME_QUEUE_NELTS; + frame_queue_nelts = FRAME_QUEUE_MAX_NELTS; ASSERT (frame_queue_nelts >= 8); @@ -1845,11 +1873,11 @@ show_clock_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { int i; - f64 now; + int verbose = 0; - now = vlib_time_now (vm); + (void) unformat (input, "verbose %=", &verbose, 1); - vlib_cli_output (vm, "Time now %.9f", now); + vlib_cli_output (vm, "%U", format_clib_time, &vm->clib_time, verbose); if (vec_len (vlib_mains) == 1) return 0; @@ -1861,6 +1889,10 @@ show_clock_command_fn (vlib_main_t * vm, { if (vlib_mains[i] == 0) continue; + + vlib_cli_output (vm, "%d: %U", i, format_clib_time, + &vlib_mains[i]->clib_time, verbose); + vlib_cli_output (vm, "Thread %d offset %.9f error %.9f", i, vlib_mains[i]->time_offset, vm->time_last_barrier_release -