diff options
Diffstat (limited to 'samples/bpf/map_perf_test_user.c')
| -rw-r--r-- | samples/bpf/map_perf_test_user.c | 77 |
1 files changed, 74 insertions, 3 deletions
diff --git a/samples/bpf/map_perf_test_user.c b/samples/bpf/map_perf_test_user.c index bccbf8478e43..f388254896f6 100644 --- a/samples/bpf/map_perf_test_user.c +++ b/samples/bpf/map_perf_test_user.c @@ -46,6 +46,7 @@ enum test_type { HASH_LOOKUP, ARRAY_LOOKUP, INNER_LRU_HASH_PREALLOC, + LRU_HASH_LOOKUP, NR_TESTS, }; @@ -60,6 +61,7 @@ const char *test_map_names[NR_TESTS] = { [HASH_LOOKUP] = "hash_map", [ARRAY_LOOKUP] = "array_map", [INNER_LRU_HASH_PREALLOC] = "inner_lru_hash_map", + [LRU_HASH_LOOKUP] = "lru_hash_lookup_map", }; static int test_flags = ~0; @@ -67,6 +69,8 @@ static uint32_t num_map_entries; static uint32_t inner_lru_hash_size; static int inner_lru_hash_idx = -1; static int array_of_lru_hashs_idx = -1; +static int lru_hash_lookup_idx = -1; +static int lru_hash_lookup_test_entries = 32; static uint32_t max_cnt = 1000000; static int check_test_flags(enum test_type t) @@ -86,6 +90,32 @@ static void test_hash_prealloc(int cpu) cpu, max_cnt * 1000000000ll / (time_get_ns() - start_time)); } +static int pre_test_lru_hash_lookup(int tasks) +{ + int fd = map_fd[lru_hash_lookup_idx]; + uint32_t key; + long val = 1; + int ret; + + if (num_map_entries > lru_hash_lookup_test_entries) + lru_hash_lookup_test_entries = num_map_entries; + + /* Populate the lru_hash_map for LRU_HASH_LOOKUP perf test. + * + * It is fine that the user requests for a map with + * num_map_entries < 32 and some of the later lru hash lookup + * may return not found. For LRU map, we are not interested + * in such small map performance. + */ + for (key = 0; key < lru_hash_lookup_test_entries; key++) { + ret = bpf_map_update_elem(fd, &key, &val, BPF_NOEXIST); + if (ret) + return ret; + } + + return 0; +} + static void do_test_lru(enum test_type test, int cpu) { static int inner_lru_map_fds[MAX_NR_CPUS]; @@ -135,13 +165,17 @@ static void do_test_lru(enum test_type test, int cpu) if (test == LRU_HASH_PREALLOC) { test_name = "lru_hash_map_perf"; - in6.sin6_addr.s6_addr16[7] = 0; + in6.sin6_addr.s6_addr16[2] = 0; } else if (test == NOCOMMON_LRU_HASH_PREALLOC) { test_name = "nocommon_lru_hash_map_perf"; - in6.sin6_addr.s6_addr16[7] = 1; + in6.sin6_addr.s6_addr16[2] = 1; } else if (test == INNER_LRU_HASH_PREALLOC) { test_name = "inner_lru_hash_map_perf"; - in6.sin6_addr.s6_addr16[7] = 2; + in6.sin6_addr.s6_addr16[2] = 2; + } else if (test == LRU_HASH_LOOKUP) { + test_name = "lru_hash_lookup_perf"; + in6.sin6_addr.s6_addr16[2] = 3; + in6.sin6_addr.s6_addr32[3] = 0; } else { assert(0); } @@ -150,6 +184,11 @@ static void do_test_lru(enum test_type test, int cpu) for (i = 0; i < max_cnt; i++) { ret = connect(-1, (const struct sockaddr *)&in6, sizeof(in6)); assert(ret == -1 && errno == EBADF); + if (in6.sin6_addr.s6_addr32[3] < + lru_hash_lookup_test_entries - 32) + in6.sin6_addr.s6_addr32[3] += 32; + else + in6.sin6_addr.s6_addr32[3] = 0; } printf("%d:%s pre-alloc %lld events per sec\n", cpu, test_name, @@ -171,6 +210,11 @@ static void test_inner_lru_hash_prealloc(int cpu) do_test_lru(INNER_LRU_HASH_PREALLOC, cpu); } +static void test_lru_hash_lookup(int cpu) +{ + do_test_lru(LRU_HASH_LOOKUP, cpu); +} + static void test_percpu_hash_prealloc(int cpu) { __u64 start_time; @@ -243,6 +287,11 @@ static void test_array_lookup(int cpu) cpu, max_cnt * 1000000000ll * 64 / (time_get_ns() - start_time)); } +typedef int (*pre_test_func)(int tasks); +const pre_test_func pre_test_funcs[] = { + [LRU_HASH_LOOKUP] = pre_test_lru_hash_lookup, +}; + typedef void (*test_func)(int cpu); const test_func test_funcs[] = { [HASH_PREALLOC] = test_hash_prealloc, @@ -255,8 +304,25 @@ const test_func test_funcs[] = { [HASH_LOOKUP] = test_hash_lookup, [ARRAY_LOOKUP] = test_array_lookup, [INNER_LRU_HASH_PREALLOC] = test_inner_lru_hash_prealloc, + [LRU_HASH_LOOKUP] = test_lru_hash_lookup, }; +static int pre_test(int tasks) +{ + int i; + + for (i = 0; i < NR_TESTS; i++) { + if (pre_test_funcs[i] && check_test_flags(i)) { + int ret = pre_test_funcs[i](tasks); + + if (ret) + return ret; + } + } + + return 0; +} + static void loop(int cpu) { cpu_set_t cpuset; @@ -277,6 +343,8 @@ static void run_perf_test(int tasks) pid_t pid[tasks]; int i; + assert(!pre_test(tasks)); + for (i = 0; i < tasks; i++) { pid[i] = fork(); if (pid[i] == 0) { @@ -344,6 +412,9 @@ static void fixup_map(struct bpf_map_data *map, int idx) array_of_lru_hashs_idx = idx; } + if (!strcmp("lru_hash_lookup_map", map->name)) + lru_hash_lookup_idx = idx; + if (num_map_entries <= 0) return; |