mirror of https://github.com/proxmox/mirror_qemu
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/*
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* QEMU buffer_is_zero speed benchmark
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* (at your option) any later version. See the COPYING file in the
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* top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qemu/cutils.h"
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#include "qemu/units.h"
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static void test(const void *opaque)
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{
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size_t max = 64 * KiB;
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void *buf = g_malloc0(max);
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int accel_index = 0;
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do {
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if (accel_index != 0) {
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g_test_message("%s", ""); /* gnu_printf Werror for simple "" */
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}
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for (size_t len = 1 * KiB; len <= max; len *= 4) {
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double total = 0.0;
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g_test_timer_start();
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do {
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buffer_is_zero_ge256(buf, len);
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total += len;
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} while (g_test_timer_elapsed() < 0.5);
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total /= MiB;
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g_test_message("buffer_is_zero #%d: %2zuKB %8.0f MB/sec",
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accel_index, len / (size_t)KiB,
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total / g_test_timer_last());
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}
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accel_index++;
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} while (test_buffer_is_zero_next_accel());
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g_free(buf);
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}
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int main(int argc, char **argv)
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{
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g_test_init(&argc, &argv, NULL);
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g_test_add_data_func("/cutils/bufferiszero/speed", NULL, test);
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return g_test_run();
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}
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