From a9beb123d19304fa6999f63d755a2bda585c1f5b Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Wed, 29 Apr 2015 17:08:18 +0200 Subject: test: rename test-bus-kernel-benchmark to test-bus-benchmark This can now benchmark more than just kdbus. --- src/libsystemd/sd-bus/test-bus-benchmark.c | 371 +++++++++++++++++++++++++++++ 1 file changed, 371 insertions(+) create mode 100644 src/libsystemd/sd-bus/test-bus-benchmark.c (limited to 'src/libsystemd/sd-bus/test-bus-benchmark.c') diff --git a/src/libsystemd/sd-bus/test-bus-benchmark.c b/src/libsystemd/sd-bus/test-bus-benchmark.c new file mode 100644 index 0000000000..d14110aa04 --- /dev/null +++ b/src/libsystemd/sd-bus/test-bus-benchmark.c @@ -0,0 +1,371 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + This file is part of systemd. + + Copyright 2013 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include + +#include "def.h" +#include "util.h" +#include "time-util.h" + +#include "sd-bus.h" +#include "bus-kernel.h" +#include "bus-internal.h" +#include "bus-util.h" + +#define MAX_SIZE (2*1024*1024) + +static usec_t arg_loop_usec = 100 * USEC_PER_MSEC; + +typedef enum Type { + TYPE_KDBUS, + TYPE_LEGACY, + TYPE_DIRECT, +} Type; + +static void server(sd_bus *b, size_t *result) { + int r; + + for (;;) { + _cleanup_bus_message_unref_ sd_bus_message *m = NULL; + + r = sd_bus_process(b, &m); + assert_se(r >= 0); + + if (r == 0) + assert_se(sd_bus_wait(b, USEC_INFINITY) >= 0); + if (!m) + continue; + + if (sd_bus_message_is_method_call(m, "benchmark.server", "Ping")) + assert_se(sd_bus_reply_method_return(m, NULL) >= 0); + else if (sd_bus_message_is_method_call(m, "benchmark.server", "Work")) { + const void *p; + size_t sz; + + /* Make sure the mmap is mapped */ + assert_se(sd_bus_message_read_array(m, 'y', &p, &sz) > 0); + + r = sd_bus_reply_method_return(m, NULL); + assert_se(r >= 0); + } else if (sd_bus_message_is_method_call(m, "benchmark.server", "Exit")) { + uint64_t res; + assert_se(sd_bus_message_read(m, "t", &res) > 0); + + *result = res; + return; + + } else if (!sd_bus_message_is_signal(m, NULL, NULL)) + assert_not_reached("Unknown method"); + } +} + +static void transaction(sd_bus *b, size_t sz, const char *server_name) { + _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL; + uint8_t *p; + + assert_se(sd_bus_message_new_method_call(b, &m, server_name, "/", "benchmark.server", "Work") >= 0); + assert_se(sd_bus_message_append_array_space(m, 'y', sz, (void**) &p) >= 0); + + memset(p, 0x80, sz); + + assert_se(sd_bus_call(b, m, 0, NULL, &reply) >= 0); +} + +static void client_bisect(const char *address, const char *server_name) { + _cleanup_bus_message_unref_ sd_bus_message *x = NULL; + size_t lsize, rsize, csize; + sd_bus *b; + int r; + + r = sd_bus_new(&b); + assert_se(r >= 0); + + r = sd_bus_set_address(b, address); + assert_se(r >= 0); + + r = sd_bus_start(b); + assert_se(r >= 0); + + r = sd_bus_call_method(b, server_name, "/", "benchmark.server", "Ping", NULL, NULL, NULL); + assert_se(r >= 0); + + lsize = 1; + rsize = MAX_SIZE; + + printf("SIZE\tCOPY\tMEMFD\n"); + + for (;;) { + usec_t t; + unsigned n_copying, n_memfd; + + csize = (lsize + rsize) / 2; + + if (csize <= lsize) + break; + + if (csize <= 0) + break; + + printf("%zu\t", csize); + + b->use_memfd = 0; + + t = now(CLOCK_MONOTONIC); + for (n_copying = 0;; n_copying++) { + transaction(b, csize, server_name); + if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) + break; + } + printf("%u\t", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec)); + + b->use_memfd = -1; + + t = now(CLOCK_MONOTONIC); + for (n_memfd = 0;; n_memfd++) { + transaction(b, csize, server_name); + if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) + break; + } + printf("%u\n", (unsigned) ((n_memfd * USEC_PER_SEC) / arg_loop_usec)); + + if (n_copying == n_memfd) + break; + + if (n_copying > n_memfd) + lsize = csize; + else + rsize = csize; + } + + b->use_memfd = 1; + assert_se(sd_bus_message_new_method_call(b, &x, server_name, "/", "benchmark.server", "Exit") >= 0); + assert_se(sd_bus_message_append(x, "t", csize) >= 0); + assert_se(sd_bus_send(b, x, NULL) >= 0); + + sd_bus_unref(b); +} + +static void client_chart(Type type, const char *address, const char *server_name, int fd) { + _cleanup_bus_message_unref_ sd_bus_message *x = NULL; + size_t csize; + sd_bus *b; + int r; + + r = sd_bus_new(&b); + assert_se(r >= 0); + + if (type == TYPE_DIRECT) { + r = sd_bus_set_fd(b, fd, fd); + assert_se(r >= 0); + } else { + r = sd_bus_set_address(b, address); + assert_se(r >= 0); + + r = sd_bus_set_bus_client(b, true); + assert_se(r >= 0); + } + + r = sd_bus_start(b); + assert_se(r >= 0); + + r = sd_bus_call_method(b, server_name, "/", "benchmark.server", "Ping", NULL, NULL, NULL); + assert_se(r >= 0); + + switch (type) { + case TYPE_KDBUS: + printf("SIZE\tCOPY\tMEMFD\n"); + break; + case TYPE_LEGACY: + printf("SIZE\tLEGACY\n"); + break; + case TYPE_DIRECT: + printf("SIZE\tDIRECT\n"); + break; + } + + for (csize = 1; csize <= MAX_SIZE; csize *= 2) { + usec_t t; + unsigned n_copying, n_memfd; + + printf("%zu\t", csize); + + if (type == TYPE_KDBUS) { + b->use_memfd = 0; + + t = now(CLOCK_MONOTONIC); + for (n_copying = 0;; n_copying++) { + transaction(b, csize, server_name); + if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) + break; + } + + printf("%u\t", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec)); + + b->use_memfd = -1; + } + + t = now(CLOCK_MONOTONIC); + for (n_memfd = 0;; n_memfd++) { + transaction(b, csize, server_name); + if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) + break; + } + + printf("%u\n", (unsigned) ((n_memfd * USEC_PER_SEC) / arg_loop_usec)); + } + + b->use_memfd = 1; + assert_se(sd_bus_message_new_method_call(b, &x, server_name, "/", "benchmark.server", "Exit") >= 0); + assert_se(sd_bus_message_append(x, "t", csize) >= 0); + assert_se(sd_bus_send(b, x, NULL) >= 0); + + sd_bus_unref(b); +} + +int main(int argc, char *argv[]) { + enum { + MODE_BISECT, + MODE_CHART, + } mode = MODE_BISECT; + Type type = TYPE_KDBUS; + int i, pair[2] = { -1, -1 }; + _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL, *server_name = NULL; + _cleanup_close_ int bus_ref = -1; + const char *unique; + cpu_set_t cpuset; + size_t result; + sd_bus *b; + pid_t pid; + int r; + + for (i = 1; i < argc; i++) { + if (streq(argv[i], "chart")) { + mode = MODE_CHART; + continue; + } else if (streq(argv[i], "legacy")) { + type = TYPE_LEGACY; + continue; + } else if (streq(argv[i], "direct")) { + type = TYPE_DIRECT; + continue; + } + + assert_se(parse_sec(argv[i], &arg_loop_usec) >= 0); + } + + assert_se(!MODE_BISECT || TYPE_KDBUS); + + assert_se(arg_loop_usec > 0); + + if (type == TYPE_KDBUS) { + assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0); + + bus_ref = bus_kernel_create_bus(name, false, &bus_name); + if (bus_ref == -ENOENT) + exit(EXIT_TEST_SKIP); + + assert_se(bus_ref >= 0); + + address = strappend("kernel:path=", bus_name); + assert_se(address); + } else if (type == TYPE_LEGACY) { + const char *e; + + e = secure_getenv("DBUS_SESSION_BUS_ADDRESS"); + assert_se(e); + + address = strdup(e); + assert_se(address); + } + + r = sd_bus_new(&b); + assert_se(r >= 0); + + if (type == TYPE_DIRECT) { + assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) >= 0); + + r = sd_bus_set_fd(b, pair[0], pair[0]); + assert_se(r >= 0); + + r = sd_bus_set_server(b, true, SD_ID128_NULL); + assert_se(r >= 0); + } else { + r = sd_bus_set_address(b, address); + assert_se(r >= 0); + + r = sd_bus_set_bus_client(b, true); + assert_se(r >= 0); + } + + r = sd_bus_start(b); + assert_se(r >= 0); + + if (type != TYPE_DIRECT) { + r = sd_bus_get_unique_name(b, &unique); + assert_se(r >= 0); + + server_name = strdup(unique); + assert_se(server_name); + } + + sync(); + setpriority(PRIO_PROCESS, 0, -19); + + pid = fork(); + assert_se(pid >= 0); + + if (pid == 0) { + CPU_ZERO(&cpuset); + CPU_SET(0, &cpuset); + pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset); + + safe_close(bus_ref); + sd_bus_unref(b); + + switch (mode) { + case MODE_BISECT: + client_bisect(address, server_name); + break; + + case MODE_CHART: + client_chart(type, address, server_name, pair[1]); + break; + } + + _exit(0); + } + + CPU_ZERO(&cpuset); + CPU_SET(1, &cpuset); + pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset); + + server(b, &result); + + if (mode == MODE_BISECT) + printf("Copying/memfd are equally fast at %zu bytes\n", result); + + assert_se(waitpid(pid, NULL, 0) == pid); + + safe_close(pair[1]); + sd_bus_unref(b); + + return 0; +} -- cgit v1.2.3