2 * Copyright (C) 2013 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include "bandwidth.h"
22 #include <sys/resource.h>
35 option_t bandwidth_opts[] = {
37 { "num_warm_loops", true },
38 { "num_loops", true },
43 option_t per_core_opts[] = {
45 { "num_warm_loops", true},
46 { "num_loops", true },
51 option_t multithread_opts[] = {
53 { "num_warm_loops", true},
54 { "num_loops", true },
56 { "num_threads", true },
62 const char *char_value;
64 typedef std::map<const char*, arg_value_t> arg_t;
66 bool processBandwidthOptions(int argc, char** argv, option_t options[],
68 for (int i = 1; i < argc; i++) {
69 if (argv[i][0] == '-' && argv[i][1] == '-' && !isdigit(argv[i][2])) {
70 char *arg = &argv[i][2];
72 for (int j = 0; options[j].name != NULL; j++) {
73 if (strcmp(arg, options[j].name) == 0) {
74 const char *name = options[j].name;
76 printf("The option --%s requires an argument.\n", name);
79 if (options[j].int_type) {
80 (*values)[name].int_value = strtol(argv[++i], NULL, 0);
82 (*values)[name].char_value = argv[++i];
92 BandwidthBenchmark *createBandwidthBenchmarkObject(arg_t values) {
93 BandwidthBenchmark *bench = NULL;
95 const char *name = values["type"].char_value;
97 if (values.count("size") > 0) {
98 size = values["size"].int_value;
100 if (strcmp(name, "copy_ldrd_strd") == 0) {
101 bench = new CopyLdrdStrdBenchmark();
102 } else if (strcmp(name, "copy_ldmia_stmia") == 0) {
103 bench = new CopyLdmiaStmiaBenchmark();
104 } else if (strcmp(name, "copy_vld1_vst1") == 0) {
105 bench = new CopyVld1Vst1Benchmark();
106 } else if (strcmp(name, "copy_vldr_vstr") == 0) {
107 bench = new CopyVldrVstrBenchmark();
108 } else if (strcmp(name, "copy_vldmia_vstmia") == 0) {
109 bench = new CopyVldmiaVstmiaBenchmark();
110 } else if (strcmp(name, "memcpy") == 0) {
111 bench = new MemcpyBenchmark();
112 } else if (strcmp(name, "write_strd") == 0) {
113 bench = new WriteStrdBenchmark();
114 } else if (strcmp(name, "write_stmia") == 0) {
115 bench = new WriteStmiaBenchmark();
116 } else if (strcmp(name, "write_vst1") == 0) {
117 bench = new WriteVst1Benchmark();
118 } else if (strcmp(name, "write_vstr") == 0) {
119 bench = new WriteVstrBenchmark();
120 } else if (strcmp(name, "write_vstmia") == 0) {
121 bench = new WriteVstmiaBenchmark();
122 } else if (strcmp(name, "memset") == 0) {
123 bench = new MemsetBenchmark();
124 } else if (strcmp(name, "read_ldrd") == 0) {
125 bench = new ReadLdrdBenchmark();
126 } else if (strcmp(name, "read_ldmia") == 0) {
127 bench = new ReadLdmiaBenchmark();
128 } else if (strcmp(name, "read_vld1") == 0) {
129 bench = new ReadVld1Benchmark();
130 } else if (strcmp(name, "read_vldr") == 0) {
131 bench = new ReadVldrBenchmark();
132 } else if (strcmp(name, "read_vldmia") == 0) {
133 bench = new ReadVldmiaBenchmark();
135 printf("Unknown type name %s\n", name);
139 if (!bench->setSize(values["size"].int_value)) {
140 printf("Failed to allocate buffers for benchmark.\n");
144 if (values.count("num_warm_loops") > 0) {
145 bench->set_num_loops(values["num_warm_loops"].int_value);
147 if (values.count("num_loops") > 0) {
148 bench->set_num_loops(values["num_loops"].int_value);
154 bool getAvailCpus(std::vector<int> *cpu_list) {
158 if (sched_getaffinity(0, sizeof(cpuset), &cpuset) != 0) {
159 perror("sched_getaffinity failed.");
163 for (int i = 0; i < CPU_SETSIZE; i++) {
164 if (CPU_ISSET(i, &cpuset)) {
165 cpu_list->push_back(i);
174 BandwidthBenchmark *bench;
179 void *runBandwidthThread(void *data) {
180 thread_arg_t *arg = reinterpret_cast<thread_arg_t *>(data);
182 if (arg->core >= 0) {
185 CPU_SET(arg->core, &cpuset);
186 if (sched_setaffinity(0, sizeof(cpuset), &cpuset) != 0) {
187 perror("sched_setaffinity failed");
192 // Spinloop waiting for the run variable to get set to true.
197 for (int run = 1; ; run++) {
200 // Throw away the last data point since it's possible not
201 // all of the threads are running at this point.
204 avg_mb = (avg_mb/run) * (run-1) + arg->bench->mb_per_sec()/run;
206 arg->avg_mb = avg_mb;
211 bool processThreadArgs(int argc, char** argv, option_t options[],
213 // Use some smaller values for the number of loops.
214 (*values)["num_warm_loops"].int_value = 1000000;
215 (*values)["num_loops"].int_value = 10000000;
217 if (!processBandwidthOptions(argc, argv, options, values)) {
220 if (values->count("size") > 0 && ((*values)["size"].int_value % 64) != 0) {
221 printf("The size values must be a multiple of 64.\n");
224 if (values->count("type") == 0) {
225 printf("Must specify the type value.\n");
229 BandwidthBenchmark *bench = createBandwidthBenchmarkObject(*values);
234 if (setpriority(PRIO_PROCESS, 0, -20)) {
235 perror("Unable to raise priority of process.");
239 printf("Calculating optimum run time...\n");
240 nsecs_t t = system_time();
242 t = system_time() - t;
243 // Since this is only going to be running single threaded, assume that
244 // if the number is set to ten times this value, we should get at least
245 // a couple of samples per thread.
246 int run_time = int((t/1000000000.0)*10 + 0.5) + 5;
248 (*values)["run_time"].int_value = run_time;
249 (*values)["size"].int_value = bench->size();
250 (*values)["num_warm_loops"].int_value = bench->num_warm_loops();
251 (*values)["num_loops"].int_value = bench->num_loops();
257 bool runThreadedTest(thread_arg_t args[], int num_threads, int run_time) {
258 pthread_t threads[num_threads];
259 volatile bool run = false;
262 for (int i = 0; i < num_threads; i++) {
264 rc = pthread_create(&threads[i], NULL, runBandwidthThread,
267 printf("Failed to launch thread %d\n", i);
272 // Kick start the threads.
275 // Let the threads run.
281 // Wait for the threads to complete.
282 for (int i = 0; i < num_threads; i++) {
283 rc = pthread_join(threads[i], NULL);
285 printf("Thread %d failed to join.\n", i);
288 printf("Thread %d: bandwidth using %s %0.2f MB/s\n", i,
289 args[i].bench->getName(), args[i].avg_mb);
295 int per_core_bandwidth(int argc, char** argv) {
297 if (!processThreadArgs(argc, argv, per_core_opts, &values)) {
301 std::vector<int> cpu_list;
302 if (!getAvailCpus(&cpu_list)) {
303 printf("Failed to get available cpu list.\n");
307 thread_arg_t args[cpu_list.size()];
310 for (std::vector<int>::iterator it = cpu_list.begin();
311 it != cpu_list.end(); ++it, ++i) {
313 args[i].bench = createBandwidthBenchmarkObject(values);
314 if (!args[i].bench) {
319 printf("Running on %d cores\n", cpu_list.size());
320 printf(" run_time = %ds\n", values["run_time"].int_value);
321 printf(" size = %d\n", values["size"].int_value);
322 printf(" num_warm_loops = %d\n", values["num_warm_loops"].int_value);
323 printf(" num_loops = %d\n", values["num_loops"].int_value);
326 if (!runThreadedTest(args, cpu_list.size(), values["run_time"].int_value)) {
333 int multithread_bandwidth(int argc, char** argv) {
335 if (!processThreadArgs(argc, argv, multithread_opts, &values)) {
338 if (values.count("num_threads") == 0) {
339 printf("Must specify the num_threads value.\n");
342 int num_threads = values["num_threads"].int_value;
344 thread_arg_t args[num_threads];
347 for (int i = 0; i < num_threads; i++) {
349 args[i].bench = createBandwidthBenchmarkObject(values);
350 if (!args[i].bench) {
355 printf("Running %d threads\n", num_threads);
356 printf(" run_time = %ds\n", values["run_time"].int_value);
357 printf(" size = %d\n", values["size"].int_value);
358 printf(" num_warm_loops = %d\n", values["num_warm_loops"].int_value);
359 printf(" num_loops = %d\n", values["num_loops"].int_value);
362 if (!runThreadedTest(args, num_threads, values["run_time"].int_value)) {
369 bool run_bandwidth_benchmark(int argc, char** argv, const char *name,
370 std::vector<BandwidthBenchmark*> bench_objs) {
372 values["size"].int_value = 0;
373 values["num_warm_loops"].int_value = 0;
374 values["num_loops"].int_value = 0;
375 if (!processBandwidthOptions(argc, argv, bandwidth_opts, &values)) {
379 size_t size = values["size"].int_value;
380 if ((size % 64) != 0) {
381 printf("The size value must be a multiple of 64.\n");
385 if (setpriority(PRIO_PROCESS, 0, -20)) {
386 perror("Unable to raise priority of process.");
390 bool preamble_printed = false;
391 size_t num_warm_loops = values["num_warm_loops"].int_value;
392 size_t num_loops = values["num_loops"].int_value;
393 for (std::vector<BandwidthBenchmark*>::iterator it = bench_objs.begin();
394 it != bench_objs.end(); ++it) {
395 if (!(*it)->canRun()) {
398 if (!(*it)->setSize(values["num_warm_loops"].int_value)) {
399 printf("Failed creating buffer for bandwidth test.\n");
402 if (num_warm_loops) {
403 (*it)->set_num_warm_loops(num_warm_loops);
406 (*it)->set_num_loops(num_loops);
408 if (!preamble_printed) {
409 preamble_printed = true;
410 printf("Benchmarking %s bandwidth\n", name);
411 printf(" size = %d\n", (*it)->size());
412 printf(" num_warm_loops = %d\n", (*it)->num_warm_loops());
413 printf(" num_loops = %d\n\n", (*it)->num_loops());
416 printf(" %s bandwidth with %s: %0.2f MB/s\n", name, (*it)->getName(),
417 (*it)->mb_per_sec());
423 int copy_bandwidth(int argc, char** argv) {
424 std::vector<BandwidthBenchmark*> bench_objs;
425 bench_objs.push_back(new CopyLdrdStrdBenchmark());
426 bench_objs.push_back(new CopyLdmiaStmiaBenchmark());
427 bench_objs.push_back(new CopyVld1Vst1Benchmark());
428 bench_objs.push_back(new CopyVldrVstrBenchmark());
429 bench_objs.push_back(new CopyVldmiaVstmiaBenchmark());
430 bench_objs.push_back(new MemcpyBenchmark());
432 if (!run_bandwidth_benchmark(argc, argv, "copy", bench_objs)) {
438 int write_bandwidth(int argc, char** argv) {
439 std::vector<BandwidthBenchmark*> bench_objs;
440 bench_objs.push_back(new WriteStrdBenchmark());
441 bench_objs.push_back(new WriteStmiaBenchmark());
442 bench_objs.push_back(new WriteVst1Benchmark());
443 bench_objs.push_back(new WriteVstrBenchmark());
444 bench_objs.push_back(new WriteVstmiaBenchmark());
445 bench_objs.push_back(new MemsetBenchmark());
447 if (!run_bandwidth_benchmark(argc, argv, "write", bench_objs)) {
454 int read_bandwidth(int argc, char** argv) {
455 std::vector<BandwidthBenchmark*> bench_objs;
456 bench_objs.push_back(new ReadLdrdBenchmark());
457 bench_objs.push_back(new ReadLdmiaBenchmark());
458 bench_objs.push_back(new ReadVld1Benchmark());
459 bench_objs.push_back(new ReadVldrBenchmark());
460 bench_objs.push_back(new ReadVldmiaBenchmark());
462 if (!run_bandwidth_benchmark(argc, argv, "read", bench_objs)) {