+++ /dev/null
-/*
- * Copyright (c) 2015 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.
- */
-
-#include <vppinfra/time.h>
-#include <vppinfra/cache.h>
-#include <vppinfra/error.h>
-
-#include <vppinfra/heap.h>
-#include <vppinfra/format.h>
-#include <vppinfra/random.h>
-#include <vppinfra/hash.h>
-
-#include <vppinfra/flowhash_8_8.h>
-
-/* Not actually tested here. But included for compilation purposes. */
-#include <vppinfra/flowhash_24_16.h>
-
-typedef struct
-{
- u64 seed;
- u32 fixed_entries;
- u32 collision_buckets;
- u32 nitems;
- u32 iterations;
- u32 prefetch;
- int non_random_keys;
- uword *key_hash;
- flowhash_lkey_8_8_t *keys;
- flowhash_8_8_t *hash;
- clib_time_t clib_time;
- unformat_input_t *input;
-} test_main_t;
-
-test_main_t test_main;
-
-static clib_error_t *
-test_flowhash (test_main_t * tm)
-{
- f64 before, delta;
- u64 total;
- u32 overflow;
- int i, j;
- uword *p;
- tm->hash = flowhash_alloc_8_8 (tm->fixed_entries, tm->collision_buckets);
- if (tm->hash == NULL)
- return clib_error_return (0, "Could not alloc hash");
-
- fformat (stdout, "Allocated hash memory size: %llu\n",
- flowhash_memory_size (tm->hash));
-
- fformat (stdout, "Pick %lld unique %s keys...\n",
- tm->nitems, tm->non_random_keys ? "non-random" : "random");
-
- for (i = 0; i < tm->nitems; i++)
- {
- flowhash_lkey_8_8_t rndkey;
- if (tm->non_random_keys == 0)
- {
- again:
- rndkey.as_u64[0] = random_u64 (&tm->seed);
- if ((p = hash_get (tm->key_hash, rndkey.as_u64[0])))
- goto again;
- }
- else
- rndkey.as_u64[0] = (u64) (i + 1) << 16;
-
- hash_set (tm->key_hash, rndkey.as_u64[0], i + 1);
- vec_add1 (tm->keys, rndkey);
- }
-
- hash_free (tm->key_hash);
-
- /* Additions */
- overflow = 0;
- before = clib_time_now (&tm->clib_time);
- fformat (stdout, "Adding %u items...\n", tm->nitems);
- for (i = 0; i < tm->nitems; i++)
- {
- u32 hash = flowhash_hash_8_8 (&tm->keys[i]);
- u32 ei;
- flowhash_get_8_8 (tm->hash, &tm->keys[i], hash, 1, &ei);
- if (flowhash_is_overflow (ei))
- overflow++;
-
- /* Set value (No matter if success) */
- flowhash_value (tm->hash, ei)->as_u64[0] = i + 1;
-
- /* Save value until time > 1 */
- flowhash_timeout (tm->hash, ei) = 1;
- }
-
- delta = clib_time_now (&tm->clib_time) - before;
- total = tm->nitems;
- fformat (stdout, "%lld additions in %.6f seconds\n", total, delta);
- if (delta > 0)
- fformat (stdout, "%.f additions per second\n", ((f64) total) / delta);
-
- fformat (stdout, "%u elements in table\n", flowhash_elts_8_8 (tm->hash, 1));
- fformat (stdout, "Flowhash counters:\n");
- fformat (stdout, " collision-lookup: %lu\n",
- tm->hash->collision_lookup_counter);
- fformat (stdout, " not-enough-buckets: %lu\n",
- tm->hash->not_enough_buckets_counter);
- fformat (stdout, " overflows: %lu\n", overflow);
-
- /* Lookups (very similar to additions) */
- overflow = 0;
- before = clib_time_now (&tm->clib_time);
- fformat (stdout, "Looking up %u items %u times...\n", tm->nitems,
- tm->iterations);
-
- for (j = 0; j < tm->iterations; j++)
- {
- i = 0;
- if (tm->prefetch)
- for (; i < tm->nitems - tm->prefetch; i++)
- {
- u32 ei;
- u32 hash = flowhash_hash_8_8 (&tm->keys[i + tm->prefetch]);
- flowhash_prefetch (tm->hash, hash);
- hash = flowhash_hash_8_8 (&tm->keys[i]);
- flowhash_get_8_8 (tm->hash, &tm->keys[i], hash, 1, &ei);
- if (flowhash_is_overflow (ei))
- overflow++;
- else if (flowhash_timeout (tm->hash, ei) != 1)
- clib_warning ("Key not found: %lld\n", tm->keys[i].as_u64[0]);
- else if (flowhash_value (tm->hash, ei)->as_u64[0] != i + 1)
- clib_warning ("Value mismatch for key %lld\n",
- tm->keys[i].as_u64[0]);
- }
-
- for (; i < tm->nitems; i++)
- {
- u32 ei;
- u32 hash = flowhash_hash_8_8 (&tm->keys[i]);
- flowhash_get_8_8 (tm->hash, &tm->keys[i], hash, 1, &ei);
- if (flowhash_is_overflow (ei))
- overflow++;
- else if (flowhash_timeout (tm->hash, ei) != 1)
- clib_warning ("Key not found: %lld\n", tm->keys[i].as_u64[0]);
- else if (flowhash_value (tm->hash, ei)->as_u64[0] != i + 1)
- clib_warning ("Value mismatch for key %lld\n",
- tm->keys[i].as_u64[0]);
- }
- }
-
- delta = clib_time_now (&tm->clib_time) - before;
- total = tm->nitems * tm->iterations;
- fformat (stdout, "%lld lookups in %.6f seconds\n", total, delta);
- if (delta > 0)
- fformat (stdout, "%.f lookups per second\n", ((f64) total) / delta);
-
- /* Delete */
- for (i = 0; i < tm->nitems; i++)
- {
- u32 hash = flowhash_hash_8_8 (&tm->keys[i]);
- u32 ei;
- flowhash_get_8_8 (tm->hash, &tm->keys[i], hash, 1, &ei);
- flowhash_timeout (tm->hash, ei) = 0;
- }
-
- fformat (stdout, "%u elements in table\n", flowhash_elts_8_8 (tm->hash, 1));
-
- vec_free (tm->keys);
- flowhash_free_8_8 (tm->hash);
-
- return NULL;
-}
-
-clib_error_t *
-test_flowhash_main (test_main_t * tm)
-{
- unformat_input_t *i = tm->input;
- clib_error_t *error;
-
- while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (i, "seed %u", &tm->seed))
- ;
- else if (unformat (i, "fixed-entries %d", &tm->fixed_entries))
- ;
- else if (unformat (i, "collision-buckets %d", &tm->collision_buckets))
- ;
- else if (unformat (i, "non-random-keys"))
- tm->non_random_keys = 1;
- else if (unformat (i, "nitems %d", &tm->nitems))
- ;
- else if (unformat (i, "prefetch %d", &tm->prefetch))
- ;
- else if (unformat (i, "iterations %d", &tm->iterations))
- ;
- else
- return clib_error_return (0, "unknown input '%U'",
- format_unformat_error, i);
- }
-
- error = test_flowhash (tm);
- return error;
-}
-
-#ifdef CLIB_UNIX
-int
-main (int argc, char *argv[])
-{
-
- unformat_input_t i;
- clib_error_t *error;
- test_main_t *tm = &test_main;
-
- clib_mem_init (0, 3ULL << 30);
-
- tm->fixed_entries = 8 << 20;
- tm->collision_buckets = 1 << 20;
- tm->seed = 0xdeadf00l;
- tm->iterations = 1;
- tm->input = &i;
- tm->nitems = 1000;
- tm->non_random_keys = 0;
- tm->key_hash = hash_create (0, sizeof (uword));
- tm->prefetch = 0;
- clib_time_init (&tm->clib_time);
-
- unformat_init_command_line (&i, argv);
- error = test_flowhash_main (tm);
- unformat_free (&i);
-
- if (error)
- {
- clib_error_report (error);
- return 1;
- }
- return 0;
-
- return 0;
-}
-#endif /* CLIB_UNIX */
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff