#include "util.h"
#include "log.h"
+#include "time-util.h"
#include "sd-bus.h"
#include "bus-message.h"
#include "bus-kernel.h"
#include "bus-internal.h"
-#define N_TRIES 10000
-#define MAX_SIZE (1*1024*1024)
+#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;
static void transaction(sd_bus *b, size_t sz) {
_cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
- /* size_t psz, i; */
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);
- /* Touch every page */
- /* psz = page_size(); */
- /* for (i = 0; i < sz; i += psz) */
- /* p[i] = 'X'; */
+ memset(p, 0x80, sz);
assert_se(sd_bus_send_with_reply_and_block(b, m, 0, NULL, &reply) >= 0);
}
-static void client(const char *address) {
+static void client_bisect(const char *address) {
_cleanup_bus_message_unref_ sd_bus_message *x = NULL;
size_t lsize, rsize, csize;
sd_bus *b;
lsize = 1;
rsize = MAX_SIZE;
+ printf("SIZE\tCOPY\tMEMFD\n");
+
for (;;) {
- usec_t copy, memfd, t;
- unsigned i;
+ usec_t t;
+ unsigned n_copying, n_memfd;
csize = (lsize + rsize) / 2;
- log_info("Trying size=%zu", csize);
-
if (csize <= lsize)
break;
if (csize <= 0)
break;
- log_info("copying...");
+ printf("%zu\t", csize);
+
b->use_memfd = 0;
+
t = now(CLOCK_MONOTONIC);
- for (i = 0; i < N_TRIES; i++)
+ for (n_copying = 0;; n_copying++) {
transaction(b, csize);
- copy = (now(CLOCK_MONOTONIC) - t);
- log_info("%llu usec per copy transaction", (unsigned long long) (copy / N_TRIES));
+ if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec)
+ break;
+ }
+ printf("%u\t", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec));
- log_info("sending memfd...");
b->use_memfd = -1;
+
t = now(CLOCK_MONOTONIC);
- for (i = 0; i < N_TRIES; i++)
+ for (n_memfd = 0;; n_memfd++) {
transaction(b, csize);
- memfd = (now(CLOCK_MONOTONIC) - t);
- log_info("%llu usec per memfd transaction", (unsigned long long) (memfd / N_TRIES));
+ if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec)
+ break;
+ }
+ printf("%u\n", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec));
- if (copy == memfd)
+ if (n_copying == n_memfd)
break;
- if (copy < memfd)
+ 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);
}
int main(int argc, char *argv[]) {
+ enum {
+ MODE_BISECT,
+ MODE_CHART,
+ } mode = MODE_BISECT;
+ int i;
_cleanup_free_ char *bus_name = NULL, *address = NULL;
_cleanup_close_ int bus_ref = -1;
cpu_set_t cpuset;
log_set_max_level(LOG_DEBUG);
+ 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);
+
bus_ref = bus_kernel_create("deine-mutter", &bus_name);
if (bus_ref == -ENOENT)
exit(EXIT_TEST_SKIP);
close_nointr_nofail(bus_ref);
sd_bus_unref(b);
- client(address);
+ switch (mode) {
+ case MODE_BISECT:
+ client_bisect(address);
+ break;
+
+ case MODE_CHART:
+ client_chart(address);
+ break;
+ }
+
_exit(0);
}
server(b, &result);
- log_info("Copying/memfd are equally fast at %zu", result);
+ if (mode == MODE_BISECT)
+ printf("Copying/memfd are equally fast at %zu bytes\n", result);
assert_se(waitpid(pid, NULL, 0) == pid);
~ianmdlvl / elogind.git / blobdiff