98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
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/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "spdk/stdinc.h"
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#include "spdk/env.h"
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#include "spdk/util.h"
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#include "spdk/histogram_data.h"
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/*
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* This applications is a simple test app used to test the performance of
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* tallying datapoints with struct spdk_histogram_data. It can be used
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* to measure the effect of changes to the spdk_histogram_data implementation.
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*
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* There are no command line parameters currently - it just tallies
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* datapoints for 10 seconds in a default-sized histogram structure and
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* then prints out the number of tallies performed.
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*/
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static void
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usage(const char *prog)
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{
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printf("usage: %s\n", prog);
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printf("Options:\n");
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}
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int
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main(int argc, char **argv)
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{
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struct spdk_histogram_data h;
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struct spdk_env_opts opts;
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uint64_t tsc[128], t, end_tsc, count;
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uint32_t i;
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int ch;
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int rc = 0;
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while ((ch = getopt(argc, argv, "")) != -1) {
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switch (ch) {
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default:
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usage(argv[0]);
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return 1;
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}
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}
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spdk_env_opts_init(&opts);
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spdk_env_init(&opts);
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for (i = 0; i < SPDK_COUNTOF(tsc); i++) {
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tsc[i] = spdk_get_ticks();
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}
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end_tsc = spdk_get_ticks() + (10 * spdk_get_ticks_hz());
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count = 0;
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spdk_histogram_data_reset(&h);
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while (true) {
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t = spdk_get_ticks();
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spdk_histogram_data_tally(&h, t - tsc[count % 128]);
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count++;
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if (t > end_tsc) {
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break;
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}
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}
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printf("count = %ju\n", count);
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return rc;
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}
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