1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <rte_cycles.h>
#include <rte_random.h>
#include <rte_memory.h>
#include <rte_lpm6.h>
#include "test.h"
#include "test_lpm6_data.h"
#define TEST_LPM_ASSERT(cond) do { \
if (!(cond)) { \
printf("Error at line %d: \n", __LINE__); \
return -1; \
} \
} while(0)
#define ITERATIONS (1 << 10)
#define BATCH_SIZE 100000
#define NUMBER_TBL8S (1 << 16)
static void
print_route_distribution(const struct rules_tbl_entry *table, uint32_t n)
{
unsigned i, j;
printf("Route distribution per prefix width: \n");
printf("DEPTH QUANTITY (PERCENT)\n");
printf("--------------------------- \n");
/* Count depths. */
for(i = 1; i <= 128; i++) {
unsigned depth_counter = 0;
double percent_hits;
for (j = 0; j < n; j++)
if (table[j].depth == (uint8_t) i)
depth_counter++;
percent_hits = ((double)depth_counter)/((double)n) * 100;
printf("%.2u%15u (%.2f)\n", i, depth_counter, percent_hits);
}
printf("\n");
}
static int
test_lpm6_perf(void)
{
struct rte_lpm6 *lpm = NULL;
struct rte_lpm6_config config;
uint64_t begin, total_time;
unsigned i, j;
uint32_t next_hop_add = 0xAA, next_hop_return = 0;
int status = 0;
int64_t count = 0;
config.max_rules = 1000000;
config.number_tbl8s = NUMBER_TBL8S;
config.flags = 0;
rte_srand(rte_rdtsc());
printf("No. routes = %u\n", (unsigned) NUM_ROUTE_ENTRIES);
print_route_distribution(large_route_table, (uint32_t) NUM_ROUTE_ENTRIES);
/* Only generate IPv6 address of each item in large IPS table,
* here next_hop is not needed.
*/
generate_large_ips_table(0);
lpm = rte_lpm6_create(__func__, SOCKET_ID_ANY, &config);
TEST_LPM_ASSERT(lpm != NULL);
/* Measure add. */
begin = rte_rdtsc();
for (i = 0; i < NUM_ROUTE_ENTRIES; i++) {
if (rte_lpm6_add(lpm, large_route_table[i].ip,
large_route_table[i].depth, next_hop_add) == 0)
status++;
}
/* End Timer. */
total_time = rte_rdtsc() - begin;
printf("Unique added entries = %d\n", status);
printf("Average LPM Add: %g cycles\n",
(double)total_time / NUM_ROUTE_ENTRIES);
/* Measure single Lookup */
total_time = 0;
count = 0;
for (i = 0; i < ITERATIONS; i ++) {
begin = rte_rdtsc();
for (j = 0; j < NUM_IPS_ENTRIES; j ++) {
if (rte_lpm6_lookup(lpm, large_ips_table[j].ip,
&next_hop_return) != 0)
count++;
}
total_time += rte_rdtsc() - begin;
}
printf("Average LPM Lookup: %.1f cycles (fails = %.1f%%)\n",
(double)total_time / ((double)ITERATIONS * BATCH_SIZE),
(count * 100.0) / (double)(ITERATIONS * BATCH_SIZE));
/* Measure bulk Lookup */
total_time = 0;
count = 0;
uint8_t ip_batch[NUM_IPS_ENTRIES][16];
int32_t next_hops[NUM_IPS_ENTRIES];
for (i = 0; i < NUM_IPS_ENTRIES; i++)
memcpy(ip_batch[i], large_ips_table[i].ip, 16);
for (i = 0; i < ITERATIONS; i ++) {
/* Lookup per batch */
begin = rte_rdtsc();
rte_lpm6_lookup_bulk_func(lpm, ip_batch, next_hops, NUM_IPS_ENTRIES);
total_time += rte_rdtsc() - begin;
for (j = 0; j < NUM_IPS_ENTRIES; j++)
if (next_hops[j] < 0)
count++;
}
printf("BULK LPM Lookup: %.1f cycles (fails = %.1f%%)\n",
(double)total_time / ((double)ITERATIONS * BATCH_SIZE),
(count * 100.0) / (double)(ITERATIONS * BATCH_SIZE));
/* Delete */
status = 0;
begin = rte_rdtsc();
for (i = 0; i < NUM_ROUTE_ENTRIES; i++) {
/* rte_lpm_delete(lpm, ip, depth) */
status += rte_lpm6_delete(lpm, large_route_table[i].ip,
large_route_table[i].depth);
}
total_time += rte_rdtsc() - begin;
printf("Average LPM Delete: %g cycles\n",
(double)total_time / NUM_ROUTE_ENTRIES);
rte_lpm6_delete_all(lpm);
rte_lpm6_free(lpm);
return 0;
}
REGISTER_TEST_COMMAND(lpm6_perf_autotest, test_lpm6_perf);
|
