Exemplos de ucs_time_from_sec em C++ (Cpp)

Exemplo n.º 1

Arquivo: libperf.c Projeto: xinzhao3/ucx

static void ucx_perf_test_reset(ucx_perf_context_t *perf,
                                ucx_perf_params_t *params)
{
    unsigned i;

    perf->params            = *params;
    perf->start_time        = ucs_get_time();
    perf->prev_time         = perf->start_time;
    perf->end_time          = (perf->params.max_time == 0.0) ? UINT64_MAX :
                               ucs_time_from_sec(perf->params.max_time) + perf->start_time;
    perf->max_iter          = (perf->params.max_iter == 0) ? UINT64_MAX :
                               perf->params.max_iter;
    perf->report_interval   = ucs_time_from_sec(perf->params.report_interval);
    perf->current.time      = 0;
    perf->current.msgs      = 0;
    perf->current.bytes     = 0;
    perf->current.iters     = 0;
    perf->prev.time         = perf->start_time;
    perf->prev.msgs         = 0;
    perf->prev.bytes        = 0;
    perf->prev.iters        = 0;
    perf->timing_queue_head = 0;
    perf->offset            = 0;
    for (i = 0; i < TIMING_QUEUE_SIZE; ++i) {
        perf->timing_queue[i] = 0;
    }
}

Exemplo n.º 2

Arquivo: sys_info.c Projeto: openucx/ucx

static double measure_memcpy_bandwidth(size_t size)
{
    ucs_time_t start_time, end_time;
    void *src, *dst;
    double result = 0.0;
    int iter;

    src = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
    if (src == MAP_FAILED) {
        goto out;
    }

    dst = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
    if (dst == MAP_FAILED) {
        goto out_unmap_src;
    }

    memset(dst, 0, size);
    memset(src, 0, size);
    memcpy(dst, src, size);

    iter = 0;
    start_time = ucs_get_time();
    do {
        memcpy(dst, src, size);
        end_time = ucs_get_time();
        ++iter;
    } while (end_time < start_time + ucs_time_from_sec(0.5));

    result = size * iter / ucs_time_to_sec(end_time - start_time);

    munmap(dst, size);
out_unmap_src:
    munmap(src, size);
out:
    return result;
}

Exemplo n.º 3

Arquivo: libperf.c Projeto: xinzhao3/ucx

void ucx_perf_calc_result(ucx_perf_context_t *perf, ucx_perf_result_t *result)
{
    double factor;
    double sec_value;

    sec_value = ucs_time_from_sec(1.0);
    if (perf->params.test_type == UCX_PERF_TEST_TYPE_PINGPONG) {
        factor = 2.0;
    } else {
        factor = 1.0;
    }

    result->iters = perf->current.iters;
    result->bytes = perf->current.bytes;
    result->elapsed_time = perf->current.time - perf->start_time;

    /* Latency */

    result->latency.typical =
        __find_median_quick_select(perf->timing_queue, TIMING_QUEUE_SIZE)
        / sec_value
        / factor;

    result->latency.moment_average =
        (double)(perf->current.time - perf->prev.time)
        / (perf->current.iters - perf->prev.iters)
        / sec_value
        / factor;

    result->latency.total_average =
        (double)(perf->current.time - perf->start_time)
        / perf->current.iters
        / sec_value
        / factor;


    /* Bandwidth */

    result->bandwidth.typical = 0.0; // Undefined

    result->bandwidth.moment_average =
        (perf->current.bytes - perf->prev.bytes) * sec_value
        / (double)(perf->current.time - perf->prev.time) * factor;

    result->bandwidth.total_average =
        perf->current.bytes * sec_value
        / (double)(perf->current.time - perf->start_time) * factor;


    /* Packet rate */

    result->msgrate.typical = 0.0; // Undefined

    result->msgrate.moment_average =
        (perf->current.msgs - perf->prev.msgs) * sec_value
        / (double)(perf->current.time - perf->prev.time) * factor;

    result->msgrate.total_average =
        perf->current.msgs * sec_value
        / (double)(perf->current.time - perf->start_time) * factor;

}