diff options
author | 2016-10-07 14:14:08 +0200 | |
---|---|---|
committer | 2016-10-07 14:14:08 +0200 | |
commit | 85f4741fcf642f52ac4fa56f0aff1728727c901b (patch) | |
tree | da8cca02913839152d2eb04c0e85a83018bcaed3 /3rdparty/libuv/test/benchmark-fs-stat.c | |
parent | ff01b716711b97c2fcaa709ea97f7650f106aa10 (diff) |
Remove libuv library (nw)
Diffstat (limited to '3rdparty/libuv/test/benchmark-fs-stat.c')
-rw-r--r-- | 3rdparty/libuv/test/benchmark-fs-stat.c | 136 |
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; -} |