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-rw-r--r--3rdparty/libuv/test/benchmark-fs-stat.c136
1 files changed, 0 insertions, 136 deletions
diff --git a/3rdparty/libuv/test/benchmark-fs-stat.c b/3rdparty/libuv/test/benchmark-fs-stat.c
deleted file mode 100644
index 32d2589586c..00000000000
--- a/3rdparty/libuv/test/benchmark-fs-stat.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#include "task.h"
-#include "uv.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#define NUM_SYNC_REQS (10 * 1e5)
-#define NUM_ASYNC_REQS (1 * (int) 1e5)
-#define MAX_CONCURRENT_REQS 32
-
-#define sync_stat(req, path) \
- do { \
- uv_fs_stat(NULL, (req), (path), NULL); \
- uv_fs_req_cleanup((req)); \
- } \
- while (0)
-
-struct async_req {
- const char* path;
- uv_fs_t fs_req;
- int* count;
-};
-
-
-static void warmup(const char* path) {
- uv_fs_t reqs[MAX_CONCURRENT_REQS];
- unsigned int i;
-
- /* warm up the thread pool */
- for (i = 0; i < ARRAY_SIZE(reqs); i++)
- uv_fs_stat(uv_default_loop(), reqs + i, path, uv_fs_req_cleanup);
-
- uv_run(uv_default_loop(), UV_RUN_DEFAULT);
-
- /* warm up the OS dirent cache */
- for (i = 0; i < 16; i++)
- sync_stat(reqs + 0, path);
-}
-
-
-static void sync_bench(const char* path) {
- uint64_t before;
- uint64_t after;
- uv_fs_t req;
- int i;
-
- /* do the sync benchmark */
- before = uv_hrtime();
-
- for (i = 0; i < NUM_SYNC_REQS; i++)
- sync_stat(&req, path);
-
- after = uv_hrtime();
-
- printf("%s stats (sync): %.2fs (%s/s)\n",
- fmt(1.0 * NUM_SYNC_REQS),
- (after - before) / 1e9,
- fmt((1.0 * NUM_SYNC_REQS) / ((after - before) / 1e9)));
- fflush(stdout);
-}
-
-
-static void stat_cb(uv_fs_t* fs_req) {
- struct async_req* req = container_of(fs_req, struct async_req, fs_req);
- uv_fs_req_cleanup(&req->fs_req);
- if (*req->count == 0) return;
- uv_fs_stat(uv_default_loop(), &req->fs_req, req->path, stat_cb);
- (*req->count)--;
-}
-
-
-static void async_bench(const char* path) {
- struct async_req reqs[MAX_CONCURRENT_REQS];
- struct async_req* req;
- uint64_t before;
- uint64_t after;
- int count;
- int i;
-
- for (i = 1; i <= MAX_CONCURRENT_REQS; i++) {
- count = NUM_ASYNC_REQS;
-
- for (req = reqs; req < reqs + i; req++) {
- req->path = path;
- req->count = &count;
- uv_fs_stat(uv_default_loop(), &req->fs_req, req->path, stat_cb);
- }
-
- before = uv_hrtime();
- uv_run(uv_default_loop(), UV_RUN_DEFAULT);
- after = uv_hrtime();
-
- printf("%s stats (%d concurrent): %.2fs (%s/s)\n",
- fmt(1.0 * NUM_ASYNC_REQS),
- i,
- (after - before) / 1e9,
- fmt((1.0 * NUM_ASYNC_REQS) / ((after - before) / 1e9)));
- fflush(stdout);
- }
-}
-
-
-/* This benchmark aims to measure the overhead of doing I/O syscalls from
- * the thread pool. The stat() syscall was chosen because its results are
- * easy for the operating system to cache, taking the actual I/O overhead
- * out of the equation.
- */
-BENCHMARK_IMPL(fs_stat) {
- const char path[] = ".";
- warmup(path);
- sync_bench(path);
- async_bench(path);
- MAKE_VALGRIND_HAPPY();
- return 0;
-}