// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */
#include <sys/types.h>
#include <sys/socket.h>
#include <pthread.h>
#include <argp.h>
#include "bench.h"
#include "bench_local_storage_create.skel.h"
struct thread {
int *fds;
pthread_t *pthds;
int *pthd_results;
};
static struct bench_local_storage_create *skel;
static struct thread *threads;
static long create_owner_errs;
static int storage_type = BPF_MAP_TYPE_SK_STORAGE;
static int batch_sz = 32;
enum {
ARG_BATCH_SZ = 9000,
ARG_STORAGE_TYPE = 9001,
};
static const struct argp_option opts[] = {
{ "batch-size", ARG_BATCH_SZ, "BATCH_SIZE", 0,
"The number of storage creations in each batch" },
{ "storage-type", ARG_STORAGE_TYPE, "STORAGE_TYPE", 0,
"The type of local storage to test (socket or task)" },
{},
};
static error_t parse_arg(int key, char *arg, struct argp_state *state)
{
int ret;
switch (key) {
case ARG_BATCH_SZ:
ret = atoi(arg);
if (ret < 1) {
fprintf(stderr, "invalid batch-size\n");
argp_usage(state);
}
batch_sz = ret;
break;
case ARG_STORAGE_TYPE:
if (!strcmp(arg, "task")) {
storage_type = BPF_MAP_TYPE_TASK_STORAGE;
} else if (!strcmp(arg, "socket")) {
storage_type = BPF_MAP_TYPE_SK_STORAGE;
} else {
fprintf(stderr, "invalid storage-type (socket or task)\n");
argp_usage(state);
}
break;
default:
return ARGP_ERR_UNKNOWN;
}
return 0;
}
const struct argp bench_local_storage_create_argp = {
.options = opts,
.parser = parse_arg,
};
static void validate(void)
{
if (env.consumer_cnt != 0) {
fprintf(stderr,
"local-storage-create benchmark does not need consumer\n");
exit(1);
}
}
static void setup(void)
{
int i;
skel = bench_local_storage_create__open_and_load();
if (!skel) {
fprintf(stderr, "error loading skel\n");
exit(1);
}
skel->bss->bench_pid = getpid();
if (storage_type == BPF_MAP_TYPE_SK_STORAGE) {
if (!bpf_program__attach(skel->progs.socket_post_create)) {
fprintf(stderr, "Error attaching bpf program\n");
exit(1);
}
} else {
if (!bpf_program__attach(skel->progs.sched_process_fork)) {
fprintf(stderr, "Error attaching bpf program\n");
exit(1);
}
}
if (!bpf_program__attach(skel->progs.kmalloc)) {
fprintf(stderr, "Error attaching bpf program\n");
exit(1);
}
threads = calloc(env.producer_cnt, sizeof(*threads));
if (!threads) {
fprintf(stderr, "cannot alloc thread_res\n");
exit(1);
}
for (i = 0; i < env.producer_cnt; i++) {
struct thread *t = &threads[i];
if (storage_type == BPF_MAP_TYPE_SK_STORAGE) {
t->fds = malloc(batch_sz * sizeof(*t->fds));
if (!t->fds) {
fprintf(stderr, "cannot alloc t->fds\n");
exit(1);
}
} else {
t->pthds = malloc(batch_sz * sizeof(*t->pthds));
if (!t->pthds) {
fprintf(stderr, "cannot alloc t->pthds\n");
exit(1);
}
t->pthd_results = malloc(batch_sz * sizeof(*t->pthd_results));
if (!t->pthd_results) {
fprintf(stderr, "cannot alloc t->pthd_results\n");
exit(1);
}
}
}
}
static void measure(struct bench_res *res)
{
res->hits = atomic_swap(&skel->bss->create_cnts, 0);
res->drops = atomic_swap(&skel->bss->kmalloc_cnts, 0);
}
static void *sk_producer(void *input)
{
struct thread *t = &threads[(long)(input)];
int *fds = t->fds;
int i;
while (true) {
for (i = 0; i < batch_sz; i++) {
fds[i] = socket(AF_INET6, SOCK_DGRAM, 0);
if (fds[i] == -1)
atomic_inc(&create_owner_errs);
}
for (i = 0; i < batch_sz; i++) {
if (fds[i] != -1)
close(fds[i]);
}
}
return NULL;
}
static void *thread_func(void *arg)
{
return NULL;
}
static void *task_producer(void *input)
{
struct thread *t = &threads[(long)(input)];
pthread_t *pthds = t->pthds;
int *pthd_results = t->pthd_results;
int i;
while (true) {
for (i = 0; i < batch_sz; i++) {
pthd_results[i] = pthread_create(&pthds[i], NULL, thread_func, NULL);
if (pthd_results[i])
atomic_inc(&create_owner_errs);
}
for (i = 0; i < batch_sz; i++) {
if (!pthd_results[i])
pthread_join(pthds[i], NULL);
}
}
return NULL;
}
static void *producer(void *input)
{
if (storage_type == BPF_MAP_TYPE_SK_STORAGE)
return sk_producer(input);
else
return task_producer(input);
}
static void report_progress(int iter, struct bench_res *res, long delta_ns)
{
double creates_per_sec, kmallocs_per_create;
creates_per_sec = res->hits / 1000.0 / (delta_ns / 1000000000.0);
kmallocs_per_create = (double)res->drops / res->hits;
printf("Iter %3d (%7.3lfus): ",
iter, (delta_ns - 1000000000) / 1000.0);
printf("creates %8.3lfk/s (%7.3lfk/prod), ",
creates_per_sec, creates_per_sec / env.producer_cnt);
printf("%3.2lf kmallocs/create\n", kmallocs_per_create);
}
static void report_final(struct bench_res res[], int res_cnt)
{
double creates_mean = 0.0, creates_stddev = 0.0;
long total_creates = 0, total_kmallocs = 0;
int i;
for (i = 0; i < res_cnt; i++) {
creates_mean += res[i].hits / 1000.0 / (0.0 + res_cnt);
total_creates += res[i].hits;
total_kmallocs += res[i].drops;
}
if (res_cnt > 1) {
for (i = 0; i < res_cnt; i++)
creates_stddev += (creates_mean - res[i].hits / 1000.0) *
(creates_mean - res[i].hits / 1000.0) /
(res_cnt - 1.0);
creates_stddev = sqrt(creates_stddev);
}
printf("Summary: creates %8.3lf \u00B1 %5.3lfk/s (%7.3lfk/prod), ",
creates_mean, creates_stddev, creates_mean / env.producer_cnt);
printf("%4.2lf kmallocs/create\n", (double)total_kmallocs / total_creates);
if (create_owner_errs || skel->bss->create_errs)
printf("%s() errors %ld create_errs %ld\n",
storage_type == BPF_MAP_TYPE_SK_STORAGE ?
"socket" : "pthread_create",
create_owner_errs,
skel->bss->create_errs);
}
/* Benchmark performance of creating bpf local storage */
const struct bench bench_local_storage_create = {
.name = "local-storage-create",
.argp = &bench_local_storage_create_argp,
.validate = validate,
.setup = setup,
.producer_thread = producer,
.measure = measure,
.report_progress = report_progress,
.report_final = report_final,
};
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