diff options
Diffstat (limited to 'src/libsystemd-bus/test-bus-kernel-benchmark.c')
| -rw-r--r-- | src/libsystemd-bus/test-bus-kernel-benchmark.c | 110 |
1 files changed, 91 insertions, 19 deletions
diff --git a/src/libsystemd-bus/test-bus-kernel-benchmark.c b/src/libsystemd-bus/test-bus-kernel-benchmark.c index e2a872c6c5..2ece2a0029 100644 --- a/src/libsystemd-bus/test-bus-kernel-benchmark.c +++ b/src/libsystemd-bus/test-bus-kernel-benchmark.c @@ -32,7 +32,7 @@ #include "bus-kernel.h" #include "bus-internal.h" -#define MAX_SIZE (1*1024*1024) +#define MAX_SIZE (8*1024*1024) static usec_t arg_loop_usec = 100 * USEC_PER_MSEC; @@ -74,21 +74,17 @@ static void server(sd_bus *b, size_t *result) { 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; @@ -108,21 +104,22 @@ static void client(const char *address) { lsize = 1; rsize = MAX_SIZE; + printf("SIZE\tCOPY\tMEMFD\n"); + for (;;) { 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..."); + fprintf(stderr, "%zu\t", csize); + b->use_memfd = 0; t = now(CLOCK_MONOTONIC); @@ -131,10 +128,8 @@ static void client(const char *address) { if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) break; } + printf("%u\t", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec)); - log_info("%u copy transactions per second", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec)); - - log_info("sending memfd..."); b->use_memfd = -1; t = now(CLOCK_MONOTONIC); @@ -143,8 +138,7 @@ static void client(const char *address) { if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) break; } - - log_info("%u memfd transactions per second", (unsigned) ((n_memfd * USEC_PER_SEC) / arg_loop_usec)); + printf("%u\n", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec)); if (n_copying == n_memfd) break; @@ -155,6 +149,63 @@ static void client(const char *address) { 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; + + fprintf(stderr, "%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); @@ -163,6 +214,11 @@ static void client(const char *address) { } 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; @@ -173,8 +229,14 @@ int main(int argc, char *argv[]) { log_set_max_level(LOG_DEBUG); - if (argc > 1) - assert_se(parse_sec(argv[1], &arg_loop_usec) >= 0); + 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); @@ -210,7 +272,16 @@ int main(int argc, char *argv[]) { 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); } @@ -220,7 +291,8 @@ int main(int argc, char *argv[]) { 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); |