diff options
author | Tom Gundersen <teg@jklm.no> | 2014-01-13 17:30:51 +0100 |
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committer | Tom Gundersen <teg@jklm.no> | 2014-01-13 18:54:19 +0100 |
commit | 6bb648a16ae4a682ad4784412af706d2e6a3e4da (patch) | |
tree | 16e7919cb609b92e879aeeab95c70ce1fc2eb4e2 /src/libsystemd-bus/test-bus-kernel-benchmark.c | |
parent | 883b36908788361a8bb945ce884dc518da83b371 (diff) |
libsystemd-bus: rename to libsystemd
Documentation was updated to refer to either 'libsystemd' or 'sd-bus' in place
of libsystemd-bus.
Diffstat (limited to 'src/libsystemd-bus/test-bus-kernel-benchmark.c')
-rw-r--r-- | src/libsystemd-bus/test-bus-kernel-benchmark.c | 303 |
1 files changed, 0 insertions, 303 deletions
diff --git a/src/libsystemd-bus/test-bus-kernel-benchmark.c b/src/libsystemd-bus/test-bus-kernel-benchmark.c deleted file mode 100644 index 04627d9a77..0000000000 --- a/src/libsystemd-bus/test-bus-kernel-benchmark.c +++ /dev/null @@ -1,303 +0,0 @@ -/*-*- 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 <http://www.gnu.org/licenses/>. -***/ - -#include <ctype.h> -#include <sys/wait.h> - -#include "util.h" -#include "log.h" -#include "time-util.h" - -#include "sd-bus.h" -#include "bus-message.h" -#include "bus-error.h" -#include "bus-kernel.h" -#include "bus-internal.h" -#include "bus-util.h" - -#define MAX_SIZE (4*1024*1024) - -static usec_t arg_loop_usec = 100 * USEC_PER_MSEC; - -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_t) -1) >= 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); - - assert_se(sd_bus_reply_method_return(m, NULL) >= 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 - assert_not_reached("Unknown method"); - } -} - -static void transaction(sd_bus *b, size_t sz) { - _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL; - uint8_t *p; - - assert_se(sd_bus_message_new_method_call(b, ":1.1", "/", "benchmark.server", "Work", &m) >= 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) { - _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); - - assert_se(sd_bus_call_method(b, ":1.1", "/", "benchmark.server", "Ping", NULL, NULL, NULL) >= 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); - 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); - 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, ":1.1", "/", "benchmark.server", "Exit", &x) >= 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(const char *address) { - _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); - - r = sd_bus_set_address(b, address); - assert_se(r >= 0); - - r = sd_bus_start(b); - assert_se(r >= 0); - - assert_se(sd_bus_call_method(b, ":1.1", "/", "benchmark.server", "Ping", NULL, NULL, NULL) >= 0); - - printf("SIZE\tCOPY\tMEMFD\n"); - - for (csize = 1; csize <= MAX_SIZE; csize *= 2) { - usec_t t; - unsigned n_copying, n_memfd; - - printf("%zu\t", csize); - - b->use_memfd = 0; - - t = now(CLOCK_MONOTONIC); - for (n_copying = 0;; n_copying++) { - transaction(b, csize); - 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); - 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, ":1.1", "/", "benchmark.server", "Exit", &x) >= 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; - int i; - _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL; - _cleanup_close_ int bus_ref = -1; - 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; - } - - assert_se(parse_sec(argv[i], &arg_loop_usec) >= 0); - } - - assert_se(arg_loop_usec > 0); - - 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); - - 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); - - 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); - - close_nointr_nofail(bus_ref); - sd_bus_unref(b); - - switch (mode) { - case MODE_BISECT: - client_bisect(address); - break; - - case MODE_CHART: - client_chart(address); - 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); - - sd_bus_unref(b); - - return 0; -} |