diff options
author | 2018-09-04 13:19:12 +0200 | |
---|---|---|
committer | 2018-09-17 10:07:27 +0000 | |
commit | 58492a83722caf1c49977d73abf931418ce1f8f2 (patch) | |
tree | 0e2f7e031fbfa10c35448c9660292146aeb442b1 /src/vpp | |
parent | 40ea3f59dca497e5f4b5a8440a9c8c2e37396701 (diff) |
STATS: Dynamically mapped shared memory segment
Move from using a hash to a vector with offsets into shared memory.
Limit exposure of VPP data structures and include files to
external stats library and applications.
Change-Id: Ic06129f12d10cf4c4946a86d9bc734eacff2c7da
Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'src/vpp')
-rw-r--r-- | src/vpp/CMakeLists.txt | 3 | ||||
-rw-r--r-- | src/vpp/app/vpp_get_stats.c | 74 | ||||
-rw-r--r-- | src/vpp/app/vpp_prometheus_export.c | 44 | ||||
-rw-r--r-- | src/vpp/stats/stat_segment.c | 580 | ||||
-rw-r--r-- | src/vpp/stats/stat_segment.h | 97 | ||||
-rw-r--r-- | src/vpp/stats/stats.c | 3 | ||||
-rw-r--r-- | src/vpp/stats/stats.h | 61 |
7 files changed, 457 insertions, 405 deletions
diff --git a/src/vpp/CMakeLists.txt b/src/vpp/CMakeLists.txt index feb75cf5a80..999b2808e87 100644 --- a/src/vpp/CMakeLists.txt +++ b/src/vpp/CMakeLists.txt @@ -113,9 +113,8 @@ add_vpp_executable(summary_stats_client add_vpp_executable(vpp_get_stats SOURCES app/vpp_get_stats.c - LINK_LIBRARIES vppapiclient vppinfra svm vlibmemoryclient + LINK_LIBRARIES vppapiclient vppinfra DEPENDS api_headers - NO_INSTALL ) add_vpp_executable(vpp_prometheus_export diff --git a/src/vpp/app/vpp_get_stats.c b/src/vpp/app/vpp_get_stats.c index 908e675b062..c1a5acb797c 100644 --- a/src/vpp/app/vpp_get_stats.c +++ b/src/vpp/app/vpp_get_stats.c @@ -22,12 +22,17 @@ #include <vpp/stats/stats.h> static int -stat_poll_loop (stat_segment_cached_pointer_t * cp) +stat_poll_loop (u8 ** patterns) { struct timespec ts, tsrem; stat_segment_data_t *res; int i, j, k, lost_connection = 0; f64 heartbeat, prev_heartbeat = 0; + u32 *stats = stat_segment_ls (patterns); + if (!stats) + { + return -1; + } printf ("\033[2J"); /* clear the screen */ while (1) @@ -49,7 +54,12 @@ stat_poll_loop (stat_segment_cached_pointer_t * cp) } printf ("\033[H"); /* Cursor top left corner */ - res = stat_segment_collect (cp); + res = stat_segment_dump (stats); + if (!res) + { + stats = stat_segment_ls (patterns); + continue; + } for (i = 0; i < vec_len (res); i++) { switch (res[i].type) @@ -57,24 +67,24 @@ stat_poll_loop (stat_segment_cached_pointer_t * cp) case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE: for (k = 0; k < vec_len (res[i].simple_counter_vec); k++) for (j = 0; j < vec_len (res[i].simple_counter_vec[k]); j++) - fformat (stdout, "[%d]: %lld packets %s\n", + fformat (stdout, "[%d]: %llu packets %s\n", j, res[i].simple_counter_vec[k][j], res[i].name); break; case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED: for (k = 0; k < vec_len (res[i].simple_counter_vec); k++) for (j = 0; j < vec_len (res[i].combined_counter_vec[k]); j++) - fformat (stdout, "[%d]: %lld packets, %lld bytes %s\n", + fformat (stdout, "[%d]: %llu packets, %llu bytes %s\n", j, res[i].combined_counter_vec[k][j].packets, res[i].combined_counter_vec[k][j].bytes, res[i].name); break; case STAT_DIR_TYPE_ERROR_INDEX: - fformat (stdout, "%lld %s\n", res[i].error_value, res[i].name); + fformat (stdout, "%llu %s\n", res[i].error_value, res[i].name); break; - case STAT_DIR_TYPE_SCALAR_POINTER: + case STAT_DIR_TYPE_SCALAR_INDEX: fformat (stdout, "%.2f %s\n", res[i].scalar_value, res[i].name); break; @@ -99,6 +109,7 @@ enum stat_client_cmd_e STAT_CLIENT_CMD_LS, STAT_CLIENT_CMD_POLL, STAT_CLIENT_CMD_DUMP, + STAT_CLIENT_CMD_TIGHTPOLL, }; int @@ -108,10 +119,9 @@ main (int argc, char **argv) u8 *stat_segment_name, *pattern = 0, **patterns = 0; int rv; enum stat_client_cmd_e cmd = STAT_CLIENT_CMD_UNKNOWN; - void *heap_base; - heap_base = clib_mem_vm_map ((void *) 0x10000000ULL, 128 << 20); - clib_mem_init (heap_base, 128 << 20); + /* Create a heap of 64MB */ + clib_mem_init (0, 64 << 20); unformat_init_command_line (a, argv); @@ -133,6 +143,10 @@ main (int argc, char **argv) { cmd = STAT_CLIENT_CMD_POLL; } + else if (unformat (a, "tightpoll")) + { + cmd = STAT_CLIENT_CMD_TIGHTPOLL; + } else if (unformat (a, "%s", &pattern)) { vec_add1 (patterns, pattern); @@ -154,10 +168,9 @@ reconnect: exit (1); } - u8 **dir; + u32 *dir; int i, j, k; stat_segment_data_t *res; - stat_segment_cached_pointer_t *cp; dir = stat_segment_ls (patterns); @@ -167,7 +180,9 @@ reconnect: /* List all counters */ for (i = 0; i < vec_len (dir); i++) { - printf ("%s\n", (char *) dir[i]); + char *n = stat_segment_index_to_name (dir[i]); + printf ("%s\n", n); + free (n); } break; @@ -180,7 +195,7 @@ reconnect: case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE: for (k = 0; k < vec_len (res[i].simple_counter_vec) - 1; k++) for (j = 0; j < vec_len (res[i].simple_counter_vec[k]); j++) - fformat (stdout, "[%d @ %d]: %lld packets %s\n", + fformat (stdout, "[%d @ %d]: %llu packets %s\n", j, k, res[i].simple_counter_vec[k][j], res[i].name); break; @@ -188,19 +203,18 @@ reconnect: case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED: for (k = 0; k < vec_len (res[i].combined_counter_vec); k++) for (j = 0; j < vec_len (res[i].combined_counter_vec[k]); j++) - fformat (stdout, "[%d @ %d]: %lld packets, %lld bytes %s\n", + fformat (stdout, "[%d @ %d]: %llu packets, %llu bytes %s\n", j, k, res[i].combined_counter_vec[k][j].packets, res[i].combined_counter_vec[k][j].bytes, res[i].name); break; case STAT_DIR_TYPE_ERROR_INDEX: - fformat (stdout, "%lld %s\n", res[i].error_value, dir[i]); + fformat (stdout, "%llu %s\n", res[i].error_value, res[i].name); break; - case STAT_DIR_TYPE_SCALAR_POINTER: - fformat (stdout, "%.2f %s\n", dir[i], res[i].scalar_value, - res[i].name); + case STAT_DIR_TYPE_SCALAR_INDEX: + fformat (stdout, "%.2f %s\n", res[i].scalar_value, res[i].name); break; default: @@ -211,19 +225,27 @@ reconnect: break; case STAT_CLIENT_CMD_POLL: - cp = stat_segment_register (dir); - if (!cp) - { - fformat (stderr, - "Couldn't register required counters with stat segment\n"); - exit (1); - } - stat_poll_loop (cp); + stat_poll_loop (patterns); /* We can only exist the pool loop if we lost connection to VPP */ stat_segment_disconnect (); goto reconnect; break; + case STAT_CLIENT_CMD_TIGHTPOLL: + while (1) + { + res = stat_segment_dump (dir); + if (res == 0) + { + /* Refresh */ + vec_free (dir); + dir = stat_segment_ls (patterns); + continue; + } + stat_segment_data_free (res); + } + break; + default: fformat (stderr, "%s: usage [socket-name <name>] [ls|dump|poll] <patterns> ...\n", diff --git a/src/vpp/app/vpp_prometheus_export.c b/src/vpp/app/vpp_prometheus_export.c index 4fd749af24a..65e014783a0 100644 --- a/src/vpp/app/vpp_prometheus_export.c +++ b/src/vpp/app/vpp_prometheus_export.c @@ -30,7 +30,6 @@ #include <sys/socket.h> #include <vpp-api/client/stat_client.h> #include <vlib/vlib.h> -#include <vpp/stats/stats.h> #include <ctype.h> /* https://github.com/prometheus/prometheus/wiki/Default-port-allocations */ @@ -50,12 +49,22 @@ prom_string (char *s) } static void -dump_metrics (FILE * stream, stat_segment_cached_pointer_t * cp) +dump_metrics (FILE * stream, u8 ** patterns) { stat_segment_data_t *res; int i, j, k; + static u32 *stats = 0; + +retry: + res = stat_segment_dump (stats); + if (res == 0) + { /* Memory layout has changed */ + if (stats) + vec_free (stats); + stats = stat_segment_ls (patterns); + goto retry; + } - res = stat_segment_collect (cp); for (i = 0; i < vec_len (res); i++) { switch (res[i].type) @@ -93,7 +102,7 @@ dump_metrics (FILE * stream, stat_segment_cached_pointer_t * cp) prom_string (res[i].name), res[i].error_value); break; - case STAT_DIR_TYPE_SCALAR_POINTER: + case STAT_DIR_TYPE_SCALAR_INDEX: fformat (stream, "# TYPE %s counter\n", prom_string (res[i].name)); fformat (stream, "%s %.2f\n", prom_string (res[i].name), res[i].scalar_value); @@ -113,7 +122,7 @@ dump_metrics (FILE * stream, stat_segment_cached_pointer_t * cp) #define NOT_FOUND_ERROR "<html><head><title>Document not found</title></head><body><h1>404 - Document not found</h1></body></html>" static void -http_handler (FILE * stream, stat_segment_cached_pointer_t * cp) +http_handler (FILE * stream, u8 ** patterns) { char status[80] = { 0 }; if (fgets (status, sizeof (status) - 1, stream) == 0) @@ -165,7 +174,7 @@ http_handler (FILE * stream, stat_segment_cached_pointer_t * cp) return; } fputs ("HTTP/1.0 200 OK\r\nContent-Type: text/plain\r\n\r\n", stream); - dump_metrics (stream, cp); + dump_metrics (stream, patterns); } static int @@ -223,10 +232,9 @@ main (int argc, char **argv) unformat_input_t _argv, *a = &_argv; u8 *stat_segment_name, *pattern = 0, **patterns = 0; int rv; - void *heap_base; - heap_base = clib_mem_vm_map ((void *) 0x10000000ULL, 128 << 20); - clib_mem_init (heap_base, 128 << 20); + /* Allocating 32MB heap */ + clib_mem_init (0, 32 << 20); unformat_init_command_line (a, argv); @@ -257,18 +265,6 @@ main (int argc, char **argv) exit (1); } - u8 **dir; - stat_segment_cached_pointer_t *cp; - - dir = stat_segment_ls (patterns); - cp = stat_segment_register (dir); - if (!cp) - { - fformat (stderr, - "Couldn't register required counters with stat segment\n"); - exit (1); - } - int fd = start_listen (SERVER_PORT); if (fd < 0) { @@ -291,8 +287,8 @@ main (int argc, char **argv) if (inet_ntop (AF_INET6, &clientaddr.sin6_addr, address, sizeof (address))) { - printf ("Client address is [%s]:%d\n", address, - ntohs (clientaddr.sin6_port)); + fprintf (stderr, "Client address is [%s]:%d\n", address, + ntohs (clientaddr.sin6_port)); } } @@ -304,7 +300,7 @@ main (int argc, char **argv) continue; } /* Single reader at the moment */ - http_handler (stream, cp); + http_handler (stream, patterns); fclose (stream); } diff --git a/src/vpp/stats/stat_segment.c b/src/vpp/stats/stat_segment.c index dcaeb5078b3..7bf6624e075 100644 --- a/src/vpp/stats/stat_segment.c +++ b/src/vpp/stats/stat_segment.c @@ -12,47 +12,64 @@ * See the License for the specific language governing permissions and * limitations under the License. */ + +#include <vppinfra/mem.h> #include <vpp/stats/stats.h> +#undef HAVE_MEMFD_CREATE +#include <vppinfra/linux/syscall.h> +/* + * Used only by VPP writers + */ void vlib_stat_segment_lock (void) { stats_main_t *sm = &stats_main; - vlib_main_t *vm = vlib_get_main (); - f64 deadman; - - /* 3ms is WAY long enough to be reasonably sure something is wrong */ - deadman = vlib_time_now (vm) + 3e-3; - - while (__sync_lock_test_and_set (&((*sm->stat_segment_lockp)->lock), 1)) - { - if (vlib_time_now (vm) >= deadman) - { - clib_warning ("BUG: stat segment lock held too long..."); - break; - } - } + clib_spinlock_lock (sm->stat_segment_lockp); + sm->shared_header->in_progress = 1; } void vlib_stat_segment_unlock (void) { stats_main_t *sm = &stats_main; + sm->shared_header->epoch++; + sm->shared_header->in_progress = 0; clib_spinlock_unlock (sm->stat_segment_lockp); } +/* + * Change heap to the stats shared memory segment + */ void * vlib_stats_push_heap (void) { stats_main_t *sm = &stats_main; - ssvm_private_t *ssvmp = &sm->stat_segment; - ssvm_shared_header_t *shared_header; - ASSERT (ssvmp && ssvmp->sh); + ASSERT (sm && sm->shared_header); + return clib_mem_set_heap (sm->heap); +} - shared_header = ssvmp->sh; +/* Name to vector index hash */ +static u32 +lookup_or_create_hash_index (void *oldheap, char *name, u32 next_vector_index) +{ + stats_main_t *sm = &stats_main; + u32 index; + hash_pair_t *hp; - return ssvm_push_heap (shared_header); + hp = hash_get_pair (sm->directory_vector_by_name, name); + if (!hp) + { + hash_set (sm->directory_vector_by_name, name, next_vector_index); + index = next_vector_index; + } + else + { + index = hp->value[0]; + } + + return index; } void @@ -60,250 +77,216 @@ vlib_stats_pop_heap (void *cm_arg, void *oldheap, stat_directory_type_t type) { vlib_simple_counter_main_t *cm = (vlib_simple_counter_main_t *) cm_arg; stats_main_t *sm = &stats_main; - ssvm_private_t *ssvmp = &sm->stat_segment; - ssvm_shared_header_t *shared_header; + stat_segment_shared_header_t *shared_header = sm->shared_header; char *stat_segment_name; - stat_segment_directory_entry_t *ep; - uword *p; - - ASSERT (ssvmp && ssvmp->sh); - - shared_header = ssvmp->sh; + stat_segment_directory_entry_t e = { 0 }; /* Not all counters have names / hash-table entries */ - if (cm->name || cm->stat_segment_name) + if (!cm->name && !cm->stat_segment_name) { - hash_pair_t *hp; - u8 *name_copy; + clib_mem_set_heap (oldheap); + return; + } - stat_segment_name = cm->stat_segment_name ? - cm->stat_segment_name : cm->name; + ASSERT (shared_header); - vlib_stat_segment_lock (); + vlib_stat_segment_lock (); - /* Update hash table. The name must be copied into the segment */ - hp = hash_get_pair (sm->counter_vector_by_name, stat_segment_name); - if (hp) - { - name_copy = (u8 *) hp->key; - ep = (stat_segment_directory_entry_t *) (hp->value[0]); - hash_unset_mem (sm->counter_vector_by_name, stat_segment_name); - vec_free (name_copy); - clib_mem_free (ep); - } - name_copy = format (0, "%s%c", stat_segment_name, 0); - ep = clib_mem_alloc (sizeof (*ep)); - ep->type = type; - ep->value = cm->counters; - hash_set_mem (sm->counter_vector_by_name, name_copy, ep); - - /* Reset the client hash table pointer, since it WILL change! */ - shared_header->opaque[STAT_SEGMENT_OPAQUE_DIR] - = sm->counter_vector_by_name; - - /* Warn clients to refresh any pointers they might be holding */ - shared_header->opaque[STAT_SEGMENT_OPAQUE_EPOCH] = (void *) - ((u64) shared_header->opaque[STAT_SEGMENT_OPAQUE_EPOCH] + 1); - vlib_stat_segment_unlock (); + /* Lookup hash-table is on the main heap */ + stat_segment_name = + cm->stat_segment_name ? cm->stat_segment_name : cm->name; + u32 next_vector_index = vec_len (sm->directory_vector); + clib_mem_set_heap (oldheap); /* Exit stats segment */ + u32 vector_index = lookup_or_create_hash_index (oldheap, stat_segment_name, + next_vector_index); + /* Back to stats segment */ + clib_mem_set_heap (sm->heap); /* Re-enter stat segment */ + + + /* Update the vector */ + if (vector_index == next_vector_index) + { /* New */ + strncpy (e.name, stat_segment_name, 128 - 1); + e.type = type; + vec_add1 (sm->directory_vector, e); + vector_index++; } - ssvm_pop_heap (oldheap); + + stat_segment_directory_entry_t *ep = &sm->directory_vector[vector_index]; + ep->offset = stat_segment_offset (shared_header, cm->counters); /* Vector of threads of vectors of counters */ + u64 *offset_vector = + ep->offset_vector ? stat_segment_pointer (shared_header, + ep->offset_vector) : 0; + + /* Update the 2nd dimension offset vector */ + int i; + vec_validate (offset_vector, vec_len (cm->counters) - 1); + for (i = 0; i < vec_len (cm->counters); i++) + offset_vector[i] = stat_segment_offset (shared_header, cm->counters[i]); + ep->offset_vector = stat_segment_offset (shared_header, offset_vector); + sm->directory_vector[vector_index].offset = + stat_segment_offset (shared_header, cm->counters); + + /* Reset the client hash table pointer, since it WILL change! */ + shared_header->directory_offset = + stat_segment_offset (shared_header, sm->directory_vector); + + vlib_stat_segment_unlock (); + clib_mem_set_heap (oldheap); } void -vlib_stats_register_error_index (u8 * name, u64 index) +vlib_stats_register_error_index (u8 * name, u64 * em_vec, u64 index) { stats_main_t *sm = &stats_main; - ssvm_private_t *ssvmp = &sm->stat_segment; - ssvm_shared_header_t *shared_header; - stat_segment_directory_entry_t *ep; + stat_segment_shared_header_t *shared_header = sm->shared_header; + stat_segment_directory_entry_t e; hash_pair_t *hp; - u8 *name_copy; - uword *p; - - ASSERT (ssvmp && ssvmp->sh); - shared_header = ssvmp->sh; + ASSERT (shared_header); vlib_stat_segment_lock (); - /* Update hash table. The name must be copied into the segment */ - hp = hash_get_pair (sm->counter_vector_by_name, name); - if (hp) - { - name_copy = (u8 *) hp->key; - ep = (stat_segment_directory_entry_t *) (hp->value[0]); - hash_unset_mem (sm->counter_vector_by_name, name); - vec_free (name_copy); - clib_mem_free (ep); - } - ep = clib_mem_alloc (sizeof (*ep)); - ep->type = STAT_DIR_TYPE_ERROR_INDEX; - ep->value = (void *) index; - - hash_set_mem (sm->counter_vector_by_name, name, ep); - - /* Reset the client hash table pointer, since it WILL change! */ - shared_header->opaque[STAT_SEGMENT_OPAQUE_DIR] = sm->counter_vector_by_name; + memcpy (e.name, name, vec_len (name)); + e.name[vec_len (name)] = '\0'; + e.type = STAT_DIR_TYPE_ERROR_INDEX; + e.offset = index; + vec_add1 (sm->directory_vector, e); /* Warn clients to refresh any pointers they might be holding */ - shared_header->opaque[STAT_SEGMENT_OPAQUE_EPOCH] = (void *) - ((u64) shared_header->opaque[STAT_SEGMENT_OPAQUE_EPOCH] + 1); + shared_header->directory_offset = + stat_segment_offset (shared_header, sm->directory_vector); + vlib_stat_segment_unlock (); } -void -vlib_stats_pop_heap2 (u64 * counter_vector, u32 thread_index, void *oldheap) +static void +stat_validate_counter_vector (stat_segment_directory_entry_t * ep, u32 max) { stats_main_t *sm = &stats_main; - ssvm_private_t *ssvmp = &sm->stat_segment; - ssvm_shared_header_t *shared_header; - stat_segment_directory_entry_t *ep; - hash_pair_t *hp; - u8 *error_vector_name; - u8 *name_copy; - uword *p; - - ASSERT (ssvmp && ssvmp->sh); - - shared_header = ssvmp->sh; - - vlib_stat_segment_lock (); - error_vector_name = format (0, "/err/%d/counter_vector%c", thread_index, 0); + stat_segment_shared_header_t *shared_header = sm->shared_header; + counter_t **counters = 0; + vlib_thread_main_t *tm = vlib_get_thread_main (); + int i; + u64 *offset_vector = 0; - /* Update hash table. The name must be copied into the segment */ - hp = hash_get_pair (sm->counter_vector_by_name, error_vector_name); - if (hp) + vec_validate_aligned (counters, tm->n_vlib_mains - 1, + CLIB_CACHE_LINE_BYTES); + for (i = 0; i < tm->n_vlib_mains; i++) { - name_copy = (u8 *) hp->key; - ep = (stat_segment_directory_entry_t *) (hp->value[0]); - hash_unset_mem (sm->counter_vector_by_name, error_vector_name); - vec_free (name_copy); - clib_mem_free (ep); + vec_validate_aligned (counters[i], max, CLIB_CACHE_LINE_BYTES); + vec_add1 (offset_vector, + stat_segment_offset (shared_header, counters[i])); } + ep->offset = stat_segment_offset (shared_header, counters); + ep->offset_vector = stat_segment_offset (shared_header, offset_vector); +} - ep = clib_mem_alloc (sizeof (*ep)); - ep->type = STAT_DIR_TYPE_VECTOR_POINTER; - ep->value = counter_vector; +void +vlib_stats_pop_heap2 (u64 * error_vector, u32 thread_index, void *oldheap) +{ + stats_main_t *sm = &stats_main; + stat_segment_shared_header_t *shared_header = sm->shared_header; - hash_set_mem (sm->counter_vector_by_name, error_vector_name, ep); + ASSERT (shared_header); + + vlib_stat_segment_lock (); /* Reset the client hash table pointer, since it WILL change! */ - shared_header->opaque[STAT_SEGMENT_OPAQUE_DIR] = sm->counter_vector_by_name; + shared_header->error_offset = + stat_segment_offset (shared_header, error_vector); + shared_header->directory_offset = + stat_segment_offset (shared_header, sm->directory_vector); - /* Warn clients to refresh any pointers they might be holding */ - shared_header->opaque[STAT_SEGMENT_OPAQUE_EPOCH] = (void *) - ((u64) shared_header->opaque[STAT_SEGMENT_OPAQUE_EPOCH] + 1); vlib_stat_segment_unlock (); - ssvm_pop_heap (oldheap); + clib_mem_set_heap (oldheap); } clib_error_t * vlib_map_stat_segment_init (void) { stats_main_t *sm = &stats_main; - ssvm_private_t *ssvmp = &sm->stat_segment; - ssvm_shared_header_t *shared_header; + stat_segment_shared_header_t *shared_header; stat_segment_directory_entry_t *ep; + f64 *scalar_data; u8 *name; void *oldheap; u32 *lock; int rv; - u64 memory_size; + ssize_t memory_size; + + + int mfd; + char *mem_name = "stat_segment_test"; + void *memaddr; memory_size = sm->memory_size; if (memory_size == 0) memory_size = STAT_SEGMENT_DEFAULT_SIZE; - ssvmp->ssvm_size = memory_size; - ssvmp->i_am_master = 1; - ssvmp->my_pid = getpid (); - ssvmp->name = format (0, "/stats%c", 0); - ssvmp->requested_va = 0; - - rv = ssvm_master_init (ssvmp, SSVM_SEGMENT_MEMFD); - - if (rv) - return clib_error_return (0, "stat segment ssvm init failure"); - shared_header = ssvmp->sh; - - oldheap = ssvm_push_heap (shared_header); - - /* Set up the name to counter-vector hash table */ - sm->counter_vector_by_name = hash_create_string (0, sizeof (uword)); - + /* Create shared memory segment */ + if ((mfd = memfd_create (mem_name, 0)) < 0) + return clib_error_return (0, "stat segment memfd_create failure"); + + /* Set size */ + if ((ftruncate (mfd, memory_size)) == -1) + return clib_error_return (0, "stat segment ftruncate failure"); + + if ((memaddr = + mmap (NULL, memory_size, PROT_READ | PROT_WRITE, MAP_SHARED, mfd, + 0)) == MAP_FAILED) + return clib_error_return (0, "stat segment mmap failure"); + + void *heap; +#if USE_DLMALLOC == 0 + heap = mheap_alloc_with_flags (((u8 *) memaddr) + getpagesize (), + memory_size - getpagesize (), + MHEAP_FLAG_DISABLE_VM | + MHEAP_FLAG_THREAD_SAFE); +#else + heap = + create_mspace_with_base (((u8 *) memaddr) + getpagesize (), + memory_size - getpagesize (), 1 /* locked */ ); + mspace_disable_expand (heap); +#endif + + sm->heap = heap; + sm->memfd = mfd; + + sm->directory_vector_by_name = hash_create_string (0, sizeof (uword)); + sm->shared_header = shared_header = memaddr; sm->stat_segment_lockp = clib_mem_alloc (sizeof (clib_spinlock_t)); - - /* Save the hash table address in the shared segment, for clients */ clib_spinlock_init (sm->stat_segment_lockp); - shared_header->opaque[STAT_SEGMENT_OPAQUE_LOCK] = sm->stat_segment_lockp; - shared_header->opaque[STAT_SEGMENT_OPAQUE_EPOCH] = (void *) 1; - - /* Set up a few scalar stats */ - - scalar_data = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, - CLIB_CACHE_LINE_BYTES); - sm->vector_rate_ptr = (scalar_data + 0); - sm->input_rate_ptr = (scalar_data + 1); - sm->last_runtime_ptr = (scalar_data + 2); - sm->last_runtime_stats_clear_ptr = (scalar_data + 3); - sm->heartbeat_ptr = (scalar_data + 4); - - name = format (0, "/sys/vector_rate%c", 0); - ep = clib_mem_alloc (sizeof (*ep)); - ep->type = STAT_DIR_TYPE_SCALAR_POINTER; - ep->value = sm->vector_rate_ptr; - - hash_set_mem (sm->counter_vector_by_name, name, ep); - - name = format (0, "/sys/input_rate%c", 0); - ep = clib_mem_alloc (sizeof (*ep)); - ep->type = STAT_DIR_TYPE_SCALAR_POINTER; - ep->value = sm->input_rate_ptr; - - hash_set_mem (sm->counter_vector_by_name, name, ep); - name = format (0, "/sys/last_update%c", 0); - ep = clib_mem_alloc (sizeof (*ep)); - ep->type = STAT_DIR_TYPE_SCALAR_POINTER; - ep->value = sm->last_runtime_ptr; + oldheap = clib_mem_set_heap (sm->heap); - hash_set_mem (sm->counter_vector_by_name, name, ep); - - name = format (0, "/sys/last_stats_clear%c", 0); - ep = clib_mem_alloc (sizeof (*ep)); - ep->type = STAT_DIR_TYPE_SCALAR_POINTER; - ep->value = sm->last_runtime_stats_clear_ptr; - - hash_set_mem (sm->counter_vector_by_name, name, ep); - - name = format (0, "/sys/heartbeat%c", 0); - ep = clib_mem_alloc (sizeof (*ep)); - ep->type = STAT_DIR_TYPE_SCALAR_POINTER; - ep->value = sm->heartbeat_ptr; - - hash_set_mem (sm->counter_vector_by_name, name, ep); + /* Set up the name to counter-vector hash table */ + sm->directory_vector = 0; + shared_header->epoch = 1; - /* Publish the hash table */ - shared_header->opaque[STAT_SEGMENT_OPAQUE_DIR] = sm->counter_vector_by_name; + /* Scalar stats and node counters */ + vec_validate (sm->directory_vector, STAT_COUNTERS - 1); +#define _(E,t,n,p) \ + strcpy(sm->directory_vector[STAT_COUNTER_##E].name, "/sys" #p "/" #n); \ + sm->directory_vector[STAT_COUNTER_##E].type = STAT_DIR_TYPE_##t; + foreach_stat_segment_counter_name +#undef _ + /* Save the vector offset in the shared segment, for clients */ + shared_header->directory_offset = + stat_segment_offset (shared_header, sm->directory_vector); - ssvm_pop_heap (oldheap); + clib_mem_set_heap (oldheap); return 0; } -typedef struct -{ - u8 *name; - stat_segment_directory_entry_t *dir_entry; -} show_stat_segment_t; - static int name_sort_cmp (void *a1, void *a2) { - show_stat_segment_t *n1 = a1; - show_stat_segment_t *n2 = a2; + stat_segment_directory_entry_t *n1 = a1; + stat_segment_directory_entry_t *n2 = a2; return strcmp ((char *) n1->name, (char *) n2->name); } @@ -316,30 +299,21 @@ format_stat_dir_entry (u8 * s, va_list * args) char *type_name; char *format_string; - format_string = "%-10s %20llx"; + format_string = "%-74s %-10s %10lld"; switch (ep->type) { - case STAT_DIR_TYPE_SCALAR_POINTER: + case STAT_DIR_TYPE_SCALAR_INDEX: type_name = "ScalarPtr"; break; - case STAT_DIR_TYPE_VECTOR_POINTER: - type_name = "VectorPtr"; - break; - case STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE: case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED: type_name = "CMainPtr"; break; - case STAT_DIR_TYPE_SERIALIZED_NODES: - type_name = "SerNodesPtr"; - break; - case STAT_DIR_TYPE_ERROR_INDEX: type_name = "ErrIndex"; - format_string = "%-10s %20lld"; break; default: @@ -347,7 +321,7 @@ format_stat_dir_entry (u8 * s, va_list * args) break; } - return format (s, format_string, type_name, ep->value); + return format (s, format_string, ep->name, type_name, ep->offset); } static clib_error_t * @@ -356,13 +330,10 @@ show_stat_segment_command_fn (vlib_main_t * vm, vlib_cli_command_t * cmd) { stats_main_t *sm = &stats_main; - ssvm_private_t *ssvmp = &sm->stat_segment; - ssvm_shared_header_t *shared_header; counter_t *counter; hash_pair_t *p; - show_stat_segment_t *show_data = 0; - show_stat_segment_t *this; - int i; + stat_segment_directory_entry_t *show_data, *this; + int i, j; int verbose = 0; u8 *s; @@ -370,40 +341,25 @@ show_stat_segment_command_fn (vlib_main_t * vm, if (unformat (input, "verbose")) verbose = 1; + /* Lock even as reader, as this command doesn't handle epoch changes */ vlib_stat_segment_lock (); - - /* *INDENT-OFF* */ - hash_foreach_pair (p, sm->counter_vector_by_name, - ({ - vec_add2 (show_data, this, 1); - - this->name = (u8 *) (p->key); - this->dir_entry = (stat_segment_directory_entry_t *)(p->value[0]); - })); - /* *INDENT-ON* */ - + show_data = vec_dup (sm->directory_vector); vlib_stat_segment_unlock (); vec_sort_with_function (show_data, name_sort_cmp); - vlib_cli_output (vm, "%-60s %10s %20s", "Name", "Type", "Value"); + vlib_cli_output (vm, "%-74s %10s %10s", "Name", "Type", "Value"); for (i = 0; i < vec_len (show_data); i++) { - this = vec_elt_at_index (show_data, i); - - vlib_cli_output (vm, "%-60s %31U", - this->name, format_stat_dir_entry, this->dir_entry); + vlib_cli_output (vm, "%-100U", format_stat_dir_entry, + vec_elt_at_index (show_data, i)); } if (verbose) { - ASSERT (ssvmp && ssvmp->sh); - - shared_header = ssvmp->sh; - - vlib_cli_output (vm, "%U", format_mheap, - shared_header->heap, 0 /* verbose */ ); + ASSERT (sm->heap); + vlib_cli_output (vm, "%U", format_mheap, sm->heap, 0 /* verbose */ ); } return 0; @@ -418,71 +374,95 @@ VLIB_CLI_COMMAND (show_stat_segment_command, static) = }; /* *INDENT-ON* */ +/* + * Node performance counters: + * total_calls [threads][node-index] + * total_vectors + * total_calls + * total suspends + */ + static inline void -update_serialized_nodes (stats_main_t * sm) +update_node_counters (stats_main_t * sm) { - int i; vlib_main_t *vm = vlib_mains[0]; - ssvm_private_t *ssvmp = &sm->stat_segment; - ssvm_shared_header_t *shared_header; - void *oldheap; - stat_segment_directory_entry_t *ep; - hash_pair_t *hp; - u8 *name_copy; - - ASSERT (ssvmp && ssvmp->sh); - - vec_reset_length (sm->serialized_nodes); - - shared_header = ssvmp->sh; - - oldheap = ssvm_push_heap (shared_header); + vlib_main_t **stat_vms = 0; + vlib_node_t ***node_dups = 0; + int i, j; + stat_segment_shared_header_t *shared_header = sm->shared_header; + static u32 no_max_nodes = 0; - vlib_stat_segment_lock (); vlib_node_get_nodes (0 /* vm, for barrier sync */ , (u32) ~ 0 /* all threads */ , 1 /* include stats */ , 0 /* barrier sync */ , - &sm->node_dups, &sm->stat_vms); + &node_dups, &stat_vms); - sm->serialized_nodes = vlib_node_serialize (vm, sm->node_dups, - sm->serialized_nodes, - 0 /* include nexts */ , - 1 /* include stats */ ); + u32 l = vec_len (node_dups[0]); - hp = hash_get_pair (sm->counter_vector_by_name, "serialized_nodes"); - if (hp) + /* + * Extend performance nodes if necessary + */ + if (l > no_max_nodes) { - name_copy = (u8 *) hp->key; - ep = (stat_segment_directory_entry_t *) (hp->value[0]); + void *oldheap = clib_mem_set_heap (sm->heap); + vlib_stat_segment_lock (); - if (ep->value != sm->serialized_nodes) - { - ep->value = sm->serialized_nodes; - /* Warn clients to refresh any pointers they might be holding */ - shared_header->opaque[STAT_SEGMENT_OPAQUE_EPOCH] = (void *) - ((u64) shared_header->opaque[STAT_SEGMENT_OPAQUE_EPOCH] + 1); - } + stat_validate_counter_vector (&sm->directory_vector + [STAT_COUNTER_NODE_CLOCKS], l); + stat_validate_counter_vector (&sm->directory_vector + [STAT_COUNTER_NODE_VECTORS], l); + stat_validate_counter_vector (&sm->directory_vector + [STAT_COUNTER_NODE_CALLS], l); + stat_validate_counter_vector (&sm->directory_vector + [STAT_COUNTER_NODE_SUSPENDS], l); + + vlib_stat_segment_unlock (); + clib_mem_set_heap (oldheap); + no_max_nodes = l; } - else + + for (j = 0; j < vec_len (node_dups); j++) { - name_copy = format (0, "%s%c", "serialized_nodes", 0); - ep = clib_mem_alloc (sizeof (*ep)); - ep->type = STAT_DIR_TYPE_SERIALIZED_NODES; - ep->value = sm->serialized_nodes; - hash_set_mem (sm->counter_vector_by_name, name_copy, ep); - - /* Reset the client hash table pointer */ - shared_header->opaque[STAT_SEGMENT_OPAQUE_DIR] - = sm->counter_vector_by_name; - - /* Warn clients to refresh any pointers they might be holding */ - shared_header->opaque[STAT_SEGMENT_OPAQUE_EPOCH] = (void *) - ((u64) shared_header->opaque[STAT_SEGMENT_OPAQUE_EPOCH] + 1); - } + vlib_node_t **nodes = node_dups[j]; + u32 l = vec_len (nodes); - vlib_stat_segment_unlock (); - ssvm_pop_heap (oldheap); + for (i = 0; i < vec_len (nodes); i++) + { + counter_t **counters; + counter_t *c; + vlib_node_t *n = nodes[i]; + + counters = + stat_segment_pointer (shared_header, + sm->directory_vector + [STAT_COUNTER_NODE_CLOCKS].offset); + c = counters[j]; + c[n->index] = n->stats_total.clocks - n->stats_last_clear.clocks; + + counters = + stat_segment_pointer (shared_header, + sm->directory_vector + [STAT_COUNTER_NODE_VECTORS].offset); + c = counters[j]; + c[n->index] = n->stats_total.vectors - n->stats_last_clear.vectors; + + counters = + stat_segment_pointer (shared_header, + sm->directory_vector + [STAT_COUNTER_NODE_CALLS].offset); + c = counters[j]; + c[n->index] = n->stats_total.calls - n->stats_last_clear.calls; + + counters = + stat_segment_pointer (shared_header, + sm->directory_vector + [STAT_COUNTER_NODE_SUSPENDS].offset); + c = counters[j]; + c[n->index] = + n->stats_total.suspends - n->stats_last_clear.suspends; + } + } } /* @@ -515,25 +495,27 @@ do_stat_segment_updates (stats_main_t * sm) } vector_rate /= (f64) (i - start); - *sm->vector_rate_ptr = vector_rate / ((f64) (vec_len (vlib_mains) - start)); + sm->directory_vector[STAT_COUNTER_VECTOR_RATE].value = + vector_rate / ((f64) (vec_len (vlib_mains) - start)); /* * Compute the aggregate input rate */ now = vlib_time_now (vm); - dt = now - sm->last_runtime_ptr[0]; + dt = now - sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value; input_packets = vnet_get_aggregate_rx_packets (); - *sm->input_rate_ptr = (f64) (input_packets - sm->last_input_packets) / dt; - sm->last_runtime_ptr[0] = now; + sm->directory_vector[STAT_COUNTER_INPUT_RATE].value = + (f64) (input_packets - sm->last_input_packets) / dt; + sm->directory_vector[STAT_COUNTER_LAST_UPDATE].value = now; sm->last_input_packets = input_packets; - sm->last_runtime_stats_clear_ptr[0] = + sm->directory_vector[STAT_COUNTER_LAST_STATS_CLEAR].value = vm->node_main.time_last_runtime_stats_clear; - if (sm->serialize_nodes) - update_serialized_nodes (sm); + if (sm->node_counters_enabled) + update_node_counters (sm); /* Heartbeat, so clients detect we're still here */ - (*sm->heartbeat_ptr)++; + sm->directory_vector[STAT_COUNTER_HEARTBEAT].value++; } static clib_error_t * @@ -546,10 +528,10 @@ statseg_config (vlib_main_t * vm, unformat_input_t * input) { if (unformat (input, "size %U", unformat_memory_size, &sm->memory_size)) ; - else if (unformat (input, "serialize-nodes on")) - sm->serialize_nodes = 1; - else if (unformat (input, "serialize-nodes off")) - sm->serialize_nodes = 0; + else if (unformat (input, "per-node-counters on")) + sm->node_counters_enabled = 1; + else if (unformat (input, "per-node-counters off")) + sm->node_counters_enabled = 0; else return clib_error_return (0, "unknown input `%U'", format_unformat_error, input); diff --git a/src/vpp/stats/stat_segment.h b/src/vpp/stats/stat_segment.h new file mode 100644 index 00000000000..0efd45ac5f0 --- /dev/null +++ b/src/vpp/stats/stat_segment.h @@ -0,0 +1,97 @@ +/* + * Copyright (c) 2018 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef included_stat_segment_h +#define included_stat_segment_h + +#include <stdatomic.h> + +/* Default socket to exchange segment fd */ +#define STAT_SEGMENT_SOCKET_FILE "/run/vpp/stats.sock" + +typedef enum +{ + STAT_DIR_TYPE_ILLEGAL = 0, + STAT_DIR_TYPE_SCALAR_INDEX, + STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE, + STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED, + STAT_DIR_TYPE_ERROR_INDEX, +} stat_directory_type_t; + +typedef enum +{ + STAT_COUNTER_VECTOR_RATE = 0, + STAT_COUNTER_INPUT_RATE, + STAT_COUNTER_LAST_UPDATE, + STAT_COUNTER_LAST_STATS_CLEAR, + STAT_COUNTER_HEARTBEAT, + STAT_COUNTER_NODE_CLOCKS, + STAT_COUNTER_NODE_VECTORS, + STAT_COUNTER_NODE_CALLS, + STAT_COUNTER_NODE_SUSPENDS, + STAT_COUNTERS +} stat_segment_counter_t; + +#define foreach_stat_segment_counter_name \ + _(VECTOR_RATE, SCALAR_INDEX, vector_rate,) \ + _(INPUT_RATE, SCALAR_INDEX, input_rate,) \ + _(LAST_UPDATE, SCALAR_INDEX, last_update,) \ + _(LAST_STATS_CLEAR, SCALAR_INDEX, last_stats_clear,) \ + _(HEARTBEAT, SCALAR_INDEX, heartbeat,) \ + _(NODE_CLOCKS, COUNTER_VECTOR_SIMPLE, clocks, /node) \ + _(NODE_VECTORS, COUNTER_VECTOR_SIMPLE, vectors, /node) \ + _(NODE_CALLS, COUNTER_VECTOR_SIMPLE, calls, /node) \ + _(NODE_SUSPENDS, COUNTER_VECTOR_SIMPLE, suspends, /node) + +typedef struct +{ + stat_directory_type_t type; + union { + uint64_t offset; + uint64_t index; + uint64_t value; + }; + uint64_t offset_vector; + char name[128]; // TODO change this to pointer to "somewhere" +} stat_segment_directory_entry_t; + +/* Default stat segment 32m */ +#define STAT_SEGMENT_DEFAULT_SIZE (32<<20) + +/* + * Shared header first in the shared memory segment. + */ +typedef struct +{ + atomic_int_fast64_t epoch; + atomic_int_fast64_t in_progress; + atomic_int_fast64_t directory_offset; + atomic_int_fast64_t error_offset; + atomic_int_fast64_t stats_offset; +} stat_segment_shared_header_t; + +static inline uint64_t +stat_segment_offset (void *start, void *data) +{ + return (char *) data - (char *) start; +} + +static inline void * +stat_segment_pointer (void *start, uint64_t offset) +{ + return ((char *) start + offset); +} + +#endif diff --git a/src/vpp/stats/stats.c b/src/vpp/stats/stats.c index d0753741997..5eea25e4464 100644 --- a/src/vpp/stats/stats.c +++ b/src/vpp/stats/stats.c @@ -2348,7 +2348,6 @@ static clib_error_t * stats_socket_accept_ready (clib_file_t * uf) { stats_main_t *sm = &stats_main; - ssvm_private_t *ssvmp = &sm->stat_segment; clib_error_t *err; clib_socket_t client = { 0 }; @@ -2360,7 +2359,7 @@ stats_socket_accept_ready (clib_file_t * uf) } /* Send the fd across and close */ - err = clib_socket_sendmsg (&client, 0, 0, &ssvmp->fd, 1); + err = clib_socket_sendmsg (&client, 0, 0, &sm->memfd, 1); if (err) clib_error_report (err); clib_socket_close (&client); diff --git a/src/vpp/stats/stats.h b/src/vpp/stats/stats.h index 911706cbb09..f21451d352b 100644 --- a/src/vpp/stats/stats.h +++ b/src/vpp/stats/stats.h @@ -26,11 +26,7 @@ #include <vlib/unix/unix.h> #include <vlibmemory/api.h> #include <vlibapi/api_helper_macros.h> -#include <svm/queue.h> -#include <svm/ssvm.h> - -/* Default socket to exchange segment fd */ -#define STAT_SEGMENT_SOCKET_FILE "/run/vpp/stats.sock" +#include <vpp/stats/stat_segment.h> typedef struct { @@ -99,7 +95,6 @@ typedef struct } vpe_client_stats_registration_t; - typedef struct { void *mheap; @@ -162,32 +157,18 @@ typedef struct vpe_client_registration_t **clients_tmp; /* statistics segment */ - ssvm_private_t stat_segment; - uword *counter_vector_by_name; + uword *directory_vector_by_name; + stat_segment_directory_entry_t *directory_vector; clib_spinlock_t *stat_segment_lockp; clib_socket_t *socket; u8 *socket_name; - uword memory_size; - u8 serialize_nodes; - - /* Pointers to scalar stats maintained by the stat thread */ - f64 *input_rate_ptr; - f64 *last_runtime_ptr; - f64 *last_runtime_stats_clear_ptr; - f64 *vector_rate_ptr; - f64 *heartbeat_ptr; - u64 last_input_packets; - - /* Pointers to vector stats maintained by the stat thread */ - u8 *serialized_nodes; - vlib_main_t **stat_vms; - vlib_node_t ***node_dups; + ssize_t memory_size; + u8 node_counters_enabled; + void *heap; + stat_segment_shared_header_t *shared_header; /* pointer to shared memory segment */ + int memfd; - f64 *vectors_per_node; - f64 *vector_rate_in; - f64 *vector_rate_out; - f64 *vector_rate_drop; - f64 *vector_rate_punt; + u64 last_input_packets; /* convenience */ vlib_main_t *vlib_main; @@ -198,30 +179,6 @@ typedef struct extern stats_main_t stats_main; -/* Default stat segment 32m */ -#define STAT_SEGMENT_DEFAULT_SIZE (32<<20) - -#define STAT_SEGMENT_OPAQUE_LOCK 0 -#define STAT_SEGMENT_OPAQUE_DIR 1 -#define STAT_SEGMENT_OPAQUE_EPOCH 2 - -typedef enum -{ - STAT_DIR_TYPE_ILLEGAL = 0, - STAT_DIR_TYPE_SCALAR_POINTER, - STAT_DIR_TYPE_VECTOR_POINTER, - STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE, - STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED, - STAT_DIR_TYPE_ERROR_INDEX, - STAT_DIR_TYPE_SERIALIZED_NODES, -} stat_directory_type_t; - -typedef struct -{ - stat_directory_type_t type; - void *value; -} stat_segment_directory_entry_t; - void do_stat_segment_updates (stats_main_t * sm); #endif /* __included_stats_h__ */ |