Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Sandeep Patil | a5e9d6b | 2018-12-29 21:05:38 -0800 | [diff] [blame] | 17 | #include <meminfo/procmeminfo.h> |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 18 | #include <meminfo/sysmeminfo.h> |
| 19 | |
| 20 | #include <fcntl.h> |
Sandeep Patil | 9f4028d | 2018-11-09 19:18:29 -0800 | [diff] [blame] | 21 | #include <inttypes.h> |
| 22 | #include <stdio.h> |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 23 | #include <sys/stat.h> |
| 24 | #include <sys/types.h> |
Edgar Arriaga | 0e52370 | 2021-03-01 17:07:23 -0800 | [diff] [blame] | 25 | #include <unistd.h> |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 26 | |
| 27 | #include <string> |
| 28 | |
| 29 | #include <android-base/file.h> |
| 30 | #include <android-base/logging.h> |
Sandeep Patil | 76a34f0 | 2018-12-29 14:34:20 -0800 | [diff] [blame] | 31 | #include <android-base/stringprintf.h> |
| 32 | #include <android-base/unique_fd.h> |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 33 | |
| 34 | #include <benchmark/benchmark.h> |
| 35 | |
Sandeep Patil | a5e9d6b | 2018-12-29 21:05:38 -0800 | [diff] [blame] | 36 | using ::android::meminfo::MemUsage; |
| 37 | using ::android::meminfo::ProcMemInfo; |
| 38 | using ::android::meminfo::SmapsOrRollupFromFile; |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 39 | using ::android::meminfo::SysMemInfo; |
Edgar Arriaga | 0e52370 | 2021-03-01 17:07:23 -0800 | [diff] [blame] | 40 | using ::android::meminfo::Vma; |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 41 | |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 42 | enum { |
| 43 | MEMINFO_TOTAL, |
| 44 | MEMINFO_FREE, |
| 45 | MEMINFO_BUFFERS, |
| 46 | MEMINFO_CACHED, |
| 47 | MEMINFO_SHMEM, |
| 48 | MEMINFO_SLAB, |
| 49 | MEMINFO_SLAB_RECLAIMABLE, |
| 50 | MEMINFO_SLAB_UNRECLAIMABLE, |
| 51 | MEMINFO_SWAP_TOTAL, |
| 52 | MEMINFO_SWAP_FREE, |
| 53 | MEMINFO_ZRAM_TOTAL, |
| 54 | MEMINFO_MAPPED, |
| 55 | MEMINFO_VMALLOC_USED, |
| 56 | MEMINFO_PAGE_TABLES, |
| 57 | MEMINFO_KERNEL_STACK, |
| 58 | MEMINFO_COUNT |
| 59 | }; |
| 60 | |
Sandeep Patil | 9f4028d | 2018-11-09 19:18:29 -0800 | [diff] [blame] | 61 | static void get_mem_info(uint64_t mem[], const char* file) { |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 62 | char buffer[4096]; |
| 63 | unsigned int numFound = 0; |
| 64 | |
| 65 | int fd = open(file, O_RDONLY); |
| 66 | |
| 67 | if (fd < 0) { |
| 68 | printf("Unable to open %s: %s\n", file, strerror(errno)); |
| 69 | return; |
| 70 | } |
| 71 | |
| 72 | const int len = read(fd, buffer, sizeof(buffer) - 1); |
| 73 | close(fd); |
| 74 | |
| 75 | if (len < 0) { |
| 76 | printf("Empty %s\n", file); |
| 77 | return; |
| 78 | } |
| 79 | buffer[len] = 0; |
| 80 | |
| 81 | static const char* const tags[] = { |
Sandeep Patil | 9f4028d | 2018-11-09 19:18:29 -0800 | [diff] [blame] | 82 | "MemTotal:", "MemFree:", "Buffers:", "Cached:", "Shmem:", "Slab:", |
| 83 | "SReclaimable:", "SUnreclaim:", "SwapTotal:", "SwapFree:", "ZRam:", "Mapped:", |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 84 | "VmallocUsed:", "PageTables:", "KernelStack:", NULL}; |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 85 | |
| 86 | static const int tagsLen[] = {9, 8, 8, 7, 6, 5, 13, 11, 10, 9, 5, 7, 12, 11, 12, 0}; |
| 87 | |
| 88 | memset(mem, 0, sizeof(uint64_t) * 15); |
| 89 | char* p = buffer; |
| 90 | while (*p && (numFound < (sizeof(tagsLen) / sizeof(tagsLen[0])))) { |
| 91 | int i = 0; |
| 92 | while (tags[i]) { |
Sandeep Patil | 9f4028d | 2018-11-09 19:18:29 -0800 | [diff] [blame] | 93 | // std::cout << "tag =" << tags[i] << " p = " << std::string(p, tagsLen[i]) << |
| 94 | // std::endl; |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 95 | if (strncmp(p, tags[i], tagsLen[i]) == 0) { |
| 96 | p += tagsLen[i]; |
| 97 | while (*p == ' ') p++; |
| 98 | char* num = p; |
| 99 | while (*p >= '0' && *p <= '9') p++; |
| 100 | if (*p != 0) { |
| 101 | *p = 0; |
| 102 | p++; |
| 103 | } |
| 104 | mem[i] = atoll(num); |
| 105 | numFound++; |
| 106 | break; |
| 107 | } |
| 108 | i++; |
| 109 | } |
| 110 | while (*p && *p != '\n') { |
| 111 | p++; |
| 112 | } |
| 113 | if (*p) p++; |
| 114 | } |
| 115 | } |
| 116 | |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 117 | static void BM_ReadMemInfo_old(benchmark::State& state) { |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 118 | std::string meminfo = R"meminfo(MemTotal: 3019740 kB |
| 119 | MemFree: 1809728 kB |
| 120 | MemAvailable: 2546560 kB |
| 121 | Buffers: 54736 kB |
| 122 | Cached: 776052 kB |
| 123 | SwapCached: 0 kB |
| 124 | Active: 445856 kB |
| 125 | Inactive: 459092 kB |
| 126 | Active(anon): 78492 kB |
| 127 | Inactive(anon): 2240 kB |
| 128 | Active(file): 367364 kB |
| 129 | Inactive(file): 456852 kB |
| 130 | Unevictable: 3096 kB |
| 131 | Mlocked: 3096 kB |
| 132 | SwapTotal: 0 kB |
| 133 | SwapFree: 0 kB |
| 134 | Dirty: 32 kB |
| 135 | Writeback: 0 kB |
| 136 | AnonPages: 74988 kB |
| 137 | Mapped: 62624 kB |
| 138 | Shmem: 4020 kB |
| 139 | Slab: 86464 kB |
| 140 | SReclaimable: 44432 kB |
| 141 | SUnreclaim: 42032 kB |
| 142 | KernelStack: 4880 kB |
| 143 | PageTables: 2900 kB |
| 144 | NFS_Unstable: 0 kB |
| 145 | Bounce: 0 kB |
| 146 | WritebackTmp: 0 kB |
| 147 | CommitLimit: 1509868 kB |
| 148 | Committed_AS: 80296 kB |
| 149 | VmallocTotal: 263061440 kB |
| 150 | VmallocUsed: 0 kB |
| 151 | VmallocChunk: 0 kB |
| 152 | AnonHugePages: 6144 kB |
| 153 | ShmemHugePages: 0 kB |
| 154 | ShmemPmdMapped: 0 kB |
| 155 | CmaTotal: 131072 kB |
| 156 | CmaFree: 130380 kB |
| 157 | HugePages_Total: 0 |
| 158 | HugePages_Free: 0 |
| 159 | HugePages_Rsvd: 0 |
| 160 | HugePages_Surp: 0 |
| 161 | Hugepagesize: 2048 kB)meminfo"; |
| 162 | |
| 163 | TemporaryFile tf; |
| 164 | ::android::base::WriteStringToFd(meminfo, tf.fd); |
| 165 | |
| 166 | uint64_t mem[MEMINFO_COUNT]; |
| 167 | for (auto _ : state) { |
| 168 | get_mem_info(mem, tf.path); |
| 169 | } |
| 170 | } |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 171 | BENCHMARK(BM_ReadMemInfo_old); |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 172 | |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 173 | static void BM_ReadMemInfo_new(benchmark::State& state) { |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 174 | std::string meminfo = R"meminfo(MemTotal: 3019740 kB |
| 175 | MemFree: 1809728 kB |
| 176 | MemAvailable: 2546560 kB |
| 177 | Buffers: 54736 kB |
| 178 | Cached: 776052 kB |
| 179 | SwapCached: 0 kB |
| 180 | Active: 445856 kB |
| 181 | Inactive: 459092 kB |
| 182 | Active(anon): 78492 kB |
| 183 | Inactive(anon): 2240 kB |
| 184 | Active(file): 367364 kB |
| 185 | Inactive(file): 456852 kB |
| 186 | Unevictable: 3096 kB |
| 187 | Mlocked: 3096 kB |
| 188 | SwapTotal: 0 kB |
| 189 | SwapFree: 0 kB |
| 190 | Dirty: 32 kB |
| 191 | Writeback: 0 kB |
| 192 | AnonPages: 74988 kB |
| 193 | Mapped: 62624 kB |
| 194 | Shmem: 4020 kB |
| 195 | Slab: 86464 kB |
| 196 | SReclaimable: 44432 kB |
| 197 | SUnreclaim: 42032 kB |
| 198 | KernelStack: 4880 kB |
| 199 | PageTables: 2900 kB |
| 200 | NFS_Unstable: 0 kB |
| 201 | Bounce: 0 kB |
| 202 | WritebackTmp: 0 kB |
| 203 | CommitLimit: 1509868 kB |
| 204 | Committed_AS: 80296 kB |
| 205 | VmallocTotal: 263061440 kB |
| 206 | VmallocUsed: 0 kB |
| 207 | VmallocChunk: 0 kB |
| 208 | AnonHugePages: 6144 kB |
| 209 | ShmemHugePages: 0 kB |
| 210 | ShmemPmdMapped: 0 kB |
| 211 | CmaTotal: 131072 kB |
| 212 | CmaFree: 130380 kB |
| 213 | HugePages_Total: 0 |
| 214 | HugePages_Free: 0 |
| 215 | HugePages_Rsvd: 0 |
| 216 | HugePages_Surp: 0 |
| 217 | Hugepagesize: 2048 kB)meminfo"; |
| 218 | |
| 219 | TemporaryFile tf; |
| 220 | android::base::WriteStringToFd(meminfo, tf.fd); |
| 221 | |
| 222 | std::string file = std::string(tf.path); |
Daniel Colascione | d64b5c9 | 2019-09-03 18:17:19 -0700 | [diff] [blame] | 223 | std::vector<uint64_t> mem; |
| 224 | const std::vector<std::string_view> tags = { |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 225 | SysMemInfo::kMemTotal, SysMemInfo::kMemFree, SysMemInfo::kMemBuffers, |
| 226 | SysMemInfo::kMemCached, SysMemInfo::kMemShmem, SysMemInfo::kMemSlab, |
| 227 | SysMemInfo::kMemSReclaim, SysMemInfo::kMemSUnreclaim, SysMemInfo::kMemSwapTotal, |
| 228 | SysMemInfo::kMemSwapFree, SysMemInfo::kMemMapped, SysMemInfo::kMemVmallocUsed, |
| 229 | SysMemInfo::kMemPageTables, SysMemInfo::kMemKernelStack, |
| 230 | }; |
| 231 | |
| 232 | SysMemInfo smi; |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 233 | for (auto _ : state) { |
Daniel Colascione | d64b5c9 | 2019-09-03 18:17:19 -0700 | [diff] [blame] | 234 | mem.resize(tags.size()); |
| 235 | smi.ReadMemInfo(tags.size(), tags.data(), mem.data(), file.c_str()); |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 236 | } |
| 237 | } |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 238 | BENCHMARK(BM_ReadMemInfo_new); |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 239 | |
Sandeep Patil | 9f4028d | 2018-11-09 19:18:29 -0800 | [diff] [blame] | 240 | static uint64_t get_zram_mem_used(const std::string& zram_dir) { |
| 241 | FILE* f = fopen((zram_dir + "mm_stat").c_str(), "r"); |
| 242 | if (f) { |
| 243 | uint64_t mem_used_total = 0; |
| 244 | |
| 245 | int matched = fscanf(f, "%*d %*d %" SCNu64 " %*d %*d %*d %*d", &mem_used_total); |
| 246 | if (matched != 1) |
| 247 | fprintf(stderr, "warning: failed to parse %s\n", (zram_dir + "mm_stat").c_str()); |
| 248 | |
| 249 | fclose(f); |
| 250 | return mem_used_total; |
| 251 | } |
| 252 | |
| 253 | f = fopen((zram_dir + "mem_used_total").c_str(), "r"); |
| 254 | if (f) { |
| 255 | uint64_t mem_used_total = 0; |
| 256 | |
| 257 | int matched = fscanf(f, "%" SCNu64, &mem_used_total); |
| 258 | if (matched != 1) |
| 259 | fprintf(stderr, "warning: failed to parse %s\n", (zram_dir + "mem_used_total").c_str()); |
| 260 | |
| 261 | fclose(f); |
| 262 | return mem_used_total; |
| 263 | } |
| 264 | |
| 265 | return 0; |
| 266 | } |
| 267 | |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 268 | static void BM_ZramTotal_old(benchmark::State& state) { |
Sandeep Patil | 9f4028d | 2018-11-09 19:18:29 -0800 | [diff] [blame] | 269 | std::string exec_dir = ::android::base::GetExecutableDirectory(); |
| 270 | std::string zram_mmstat_dir = exec_dir + "/testdata1/"; |
| 271 | for (auto _ : state) { |
| 272 | uint64_t zram_total __attribute__((unused)) = get_zram_mem_used(zram_mmstat_dir) / 1024; |
| 273 | } |
| 274 | } |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 275 | BENCHMARK(BM_ZramTotal_old); |
Sandeep Patil | 9f4028d | 2018-11-09 19:18:29 -0800 | [diff] [blame] | 276 | |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 277 | static void BM_ZramTotal_new(benchmark::State& state) { |
Sandeep Patil | 9f4028d | 2018-11-09 19:18:29 -0800 | [diff] [blame] | 278 | std::string exec_dir = ::android::base::GetExecutableDirectory(); |
| 279 | std::string zram_mmstat_dir = exec_dir + "/testdata1/"; |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 280 | SysMemInfo smi; |
Sandeep Patil | 9f4028d | 2018-11-09 19:18:29 -0800 | [diff] [blame] | 281 | for (auto _ : state) { |
Daniel Colascione | d64b5c9 | 2019-09-03 18:17:19 -0700 | [diff] [blame] | 282 | uint64_t zram_total __attribute__((unused)) = smi.mem_zram_kb(zram_mmstat_dir.c_str()); |
Sandeep Patil | 9f4028d | 2018-11-09 19:18:29 -0800 | [diff] [blame] | 283 | } |
| 284 | } |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 285 | BENCHMARK(BM_ZramTotal_new); |
| 286 | |
| 287 | static void BM_MemInfoWithZram_old(benchmark::State& state) { |
| 288 | std::string meminfo = R"meminfo(MemTotal: 3019740 kB |
| 289 | MemFree: 1809728 kB |
| 290 | MemAvailable: 2546560 kB |
| 291 | Buffers: 54736 kB |
| 292 | Cached: 776052 kB |
| 293 | SwapCached: 0 kB |
| 294 | Active: 445856 kB |
| 295 | Inactive: 459092 kB |
| 296 | Active(anon): 78492 kB |
| 297 | Inactive(anon): 2240 kB |
| 298 | Active(file): 367364 kB |
| 299 | Inactive(file): 456852 kB |
| 300 | Unevictable: 3096 kB |
| 301 | Mlocked: 3096 kB |
| 302 | SwapTotal: 0 kB |
| 303 | SwapFree: 0 kB |
| 304 | Dirty: 32 kB |
| 305 | Writeback: 0 kB |
| 306 | AnonPages: 74988 kB |
| 307 | Mapped: 62624 kB |
| 308 | Shmem: 4020 kB |
| 309 | Slab: 86464 kB |
| 310 | SReclaimable: 44432 kB |
| 311 | SUnreclaim: 42032 kB |
| 312 | KernelStack: 4880 kB |
| 313 | PageTables: 2900 kB |
| 314 | NFS_Unstable: 0 kB |
| 315 | Bounce: 0 kB |
| 316 | WritebackTmp: 0 kB |
| 317 | CommitLimit: 1509868 kB |
| 318 | Committed_AS: 80296 kB |
| 319 | VmallocTotal: 263061440 kB |
| 320 | VmallocUsed: 0 kB |
| 321 | VmallocChunk: 0 kB |
| 322 | AnonHugePages: 6144 kB |
| 323 | ShmemHugePages: 0 kB |
| 324 | ShmemPmdMapped: 0 kB |
| 325 | CmaTotal: 131072 kB |
| 326 | CmaFree: 130380 kB |
| 327 | HugePages_Total: 0 |
| 328 | HugePages_Free: 0 |
| 329 | HugePages_Rsvd: 0 |
| 330 | HugePages_Surp: 0 |
| 331 | Hugepagesize: 2048 kB)meminfo"; |
| 332 | |
| 333 | TemporaryFile tf; |
| 334 | ::android::base::WriteStringToFd(meminfo, tf.fd); |
| 335 | std::string exec_dir = ::android::base::GetExecutableDirectory(); |
| 336 | std::string zram_mmstat_dir = exec_dir + "/testdata1/"; |
| 337 | uint64_t mem[MEMINFO_COUNT]; |
| 338 | for (auto _ : state) { |
| 339 | get_mem_info(mem, tf.path); |
| 340 | mem[MEMINFO_ZRAM_TOTAL] = get_zram_mem_used("/sys/block/zram0/") / 1024; |
| 341 | CHECK_EQ(mem[MEMINFO_KERNEL_STACK], 4880u); |
| 342 | } |
| 343 | } |
| 344 | BENCHMARK(BM_MemInfoWithZram_old); |
| 345 | |
| 346 | static void BM_MemInfoWithZram_new(benchmark::State& state) { |
| 347 | std::string meminfo = R"meminfo(MemTotal: 3019740 kB |
| 348 | MemFree: 1809728 kB |
| 349 | MemAvailable: 2546560 kB |
| 350 | Buffers: 54736 kB |
| 351 | Cached: 776052 kB |
| 352 | SwapCached: 0 kB |
| 353 | Active: 445856 kB |
| 354 | Inactive: 459092 kB |
| 355 | Active(anon): 78492 kB |
| 356 | Inactive(anon): 2240 kB |
| 357 | Active(file): 367364 kB |
| 358 | Inactive(file): 456852 kB |
| 359 | Unevictable: 3096 kB |
| 360 | Mlocked: 3096 kB |
| 361 | SwapTotal: 0 kB |
| 362 | SwapFree: 0 kB |
| 363 | Dirty: 32 kB |
| 364 | Writeback: 0 kB |
| 365 | AnonPages: 74988 kB |
| 366 | Mapped: 62624 kB |
| 367 | Shmem: 4020 kB |
| 368 | Slab: 86464 kB |
| 369 | SReclaimable: 44432 kB |
| 370 | SUnreclaim: 42032 kB |
| 371 | KernelStack: 4880 kB |
| 372 | PageTables: 2900 kB |
| 373 | NFS_Unstable: 0 kB |
| 374 | Bounce: 0 kB |
| 375 | WritebackTmp: 0 kB |
| 376 | CommitLimit: 1509868 kB |
| 377 | Committed_AS: 80296 kB |
| 378 | VmallocTotal: 263061440 kB |
| 379 | VmallocUsed: 0 kB |
| 380 | VmallocChunk: 0 kB |
| 381 | AnonHugePages: 6144 kB |
| 382 | ShmemHugePages: 0 kB |
| 383 | ShmemPmdMapped: 0 kB |
| 384 | CmaTotal: 131072 kB |
| 385 | CmaFree: 130380 kB |
| 386 | HugePages_Total: 0 |
| 387 | HugePages_Free: 0 |
| 388 | HugePages_Rsvd: 0 |
| 389 | HugePages_Surp: 0 |
| 390 | Hugepagesize: 2048 kB)meminfo"; |
| 391 | |
| 392 | TemporaryFile tf; |
| 393 | android::base::WriteStringToFd(meminfo, tf.fd); |
| 394 | |
| 395 | std::string file = std::string(tf.path); |
Daniel Colascione | d64b5c9 | 2019-09-03 18:17:19 -0700 | [diff] [blame] | 396 | std::vector<uint64_t> mem; |
| 397 | std::vector<std::string_view> tags(SysMemInfo::kDefaultSysMemInfoTags.begin(), |
| 398 | SysMemInfo::kDefaultSysMemInfoTags.end()); |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 399 | auto it = tags.begin(); |
| 400 | tags.insert(it + MEMINFO_ZRAM_TOTAL, "Zram:"); |
| 401 | SysMemInfo smi; |
| 402 | |
| 403 | for (auto _ : state) { |
Daniel Colascione | d64b5c9 | 2019-09-03 18:17:19 -0700 | [diff] [blame] | 404 | mem.resize(tags.size()); |
| 405 | smi.ReadMemInfo(tags.size(), tags.data(), mem.data(), file.c_str()); |
Sandeep Patil | e473d7e | 2018-12-11 09:28:38 -0800 | [diff] [blame] | 406 | CHECK_EQ(mem[MEMINFO_KERNEL_STACK], 4880u); |
| 407 | } |
| 408 | } |
| 409 | BENCHMARK(BM_MemInfoWithZram_new); |
Sandeep Patil | 9f4028d | 2018-11-09 19:18:29 -0800 | [diff] [blame] | 410 | |
Sandeep Patil | 76a34f0 | 2018-12-29 14:34:20 -0800 | [diff] [blame] | 411 | // Current implementation is in frameworks/base/core/jni/android_os_Debug.cpp. |
| 412 | // That implementation is still buggy and it skips over vmalloc allocated memory by kernel modules. |
| 413 | // This is the *fixed* version of the same implementation intended for benchmarking against the new |
| 414 | // one. |
| 415 | static uint64_t get_allocated_vmalloc_memory(const std::string& vm_file) { |
| 416 | char line[1024]; |
| 417 | |
| 418 | uint64_t vmalloc_allocated_size = 0; |
| 419 | auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(vm_file.c_str(), "re"), fclose}; |
| 420 | if (fp == nullptr) { |
| 421 | return 0; |
| 422 | } |
| 423 | |
| 424 | while (true) { |
| 425 | if (fgets(line, 1024, fp.get()) == NULL) { |
| 426 | break; |
| 427 | } |
| 428 | |
| 429 | // check to see if there are pages mapped in vmalloc area |
| 430 | if (!strstr(line, "pages=")) { |
| 431 | continue; |
| 432 | } |
| 433 | |
| 434 | long nr_pages; |
| 435 | if (sscanf(line, "%*x-%*x %*ld %*s pages=%ld", &nr_pages) == 1) { |
| 436 | vmalloc_allocated_size += (nr_pages * getpagesize()); |
| 437 | } else if (sscanf(line, "%*x-%*x %*ld %*s %*s pages=%ld", &nr_pages) == 1) { |
| 438 | // The second case is for kernel modules. If allocation comes from the module, |
| 439 | // kernel puts an extra string containing the module name before "pages=" in |
| 440 | // the line. |
| 441 | // See: https://elixir.bootlin.com/linux/latest/source/kernel/kallsyms.c#L373 |
| 442 | vmalloc_allocated_size += (nr_pages * getpagesize()); |
| 443 | } |
| 444 | } |
| 445 | return vmalloc_allocated_size; |
| 446 | } |
| 447 | |
| 448 | static void BM_VmallocInfo_old_fixed(benchmark::State& state) { |
| 449 | std::string exec_dir = ::android::base::GetExecutableDirectory(); |
| 450 | std::string vmallocinfo = |
| 451 | ::android::base::StringPrintf("%s/testdata1/vmallocinfo", exec_dir.c_str()); |
| 452 | for (auto _ : state) { |
| 453 | CHECK_EQ(get_allocated_vmalloc_memory(vmallocinfo), 29884416); |
| 454 | } |
| 455 | } |
| 456 | BENCHMARK(BM_VmallocInfo_old_fixed); |
| 457 | |
| 458 | static void BM_VmallocInfo_new(benchmark::State& state) { |
| 459 | std::string exec_dir = ::android::base::GetExecutableDirectory(); |
| 460 | std::string vmallocinfo = |
| 461 | ::android::base::StringPrintf("%s/testdata1/vmallocinfo", exec_dir.c_str()); |
| 462 | for (auto _ : state) { |
Daniel Colascione | d64b5c9 | 2019-09-03 18:17:19 -0700 | [diff] [blame] | 463 | CHECK_EQ(::android::meminfo::ReadVmallocInfo(vmallocinfo.c_str()), 29884416); |
Sandeep Patil | 76a34f0 | 2018-12-29 14:34:20 -0800 | [diff] [blame] | 464 | } |
| 465 | } |
| 466 | BENCHMARK(BM_VmallocInfo_new); |
| 467 | |
Sandeep Patil | a5e9d6b | 2018-12-29 21:05:38 -0800 | [diff] [blame] | 468 | // This implementation is picked up as-is from frameworks/base/core/jni/android_os_Debug.cpp |
| 469 | // and only slightly modified to use std:unique_ptr. |
| 470 | static bool get_smaps_rollup(const std::string path, MemUsage* rollup) { |
| 471 | char lineBuffer[1024]; |
| 472 | auto fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(path.c_str(), "re"), fclose}; |
| 473 | if (fp != nullptr) { |
| 474 | char* line; |
| 475 | while (true) { |
| 476 | if (fgets(lineBuffer, sizeof(lineBuffer), fp.get()) == NULL) { |
| 477 | break; |
| 478 | } |
| 479 | line = lineBuffer; |
| 480 | |
| 481 | switch (line[0]) { |
| 482 | case 'P': |
| 483 | if (strncmp(line, "Pss:", 4) == 0) { |
| 484 | char* c = line + 4; |
| 485 | while (*c != 0 && (*c < '0' || *c > '9')) { |
| 486 | c++; |
| 487 | } |
| 488 | rollup->pss += atoi(c); |
| 489 | } else if (strncmp(line, "Private_Clean:", 14) == 0 || |
| 490 | strncmp(line, "Private_Dirty:", 14) == 0) { |
| 491 | char* c = line + 14; |
| 492 | while (*c != 0 && (*c < '0' || *c > '9')) { |
| 493 | c++; |
| 494 | } |
| 495 | rollup->uss += atoi(c); |
| 496 | } |
| 497 | break; |
| 498 | case 'R': |
| 499 | if (strncmp(line, "Rss:", 4) == 0) { |
| 500 | char* c = line + 4; |
| 501 | while (*c != 0 && (*c < '0' || *c > '9')) { |
| 502 | c++; |
| 503 | } |
| 504 | rollup->rss += atoi(c); |
| 505 | } |
| 506 | break; |
| 507 | case 'S': |
| 508 | if (strncmp(line, "SwapPss:", 8) == 0) { |
| 509 | char* c = line + 8; |
| 510 | long lSwapPss; |
| 511 | while (*c != 0 && (*c < '0' || *c > '9')) { |
| 512 | c++; |
| 513 | } |
| 514 | lSwapPss = atoi(c); |
| 515 | rollup->swap_pss += lSwapPss; |
| 516 | } |
| 517 | break; |
| 518 | } |
| 519 | } |
| 520 | } else { |
| 521 | return false; |
| 522 | } |
| 523 | |
| 524 | return true; |
| 525 | } |
| 526 | |
| 527 | static void BM_SmapsRollup_old(benchmark::State& state) { |
| 528 | std::string exec_dir = ::android::base::GetExecutableDirectory(); |
| 529 | std::string path = ::android::base::StringPrintf("%s/testdata1/smaps", exec_dir.c_str()); |
| 530 | for (auto _ : state) { |
| 531 | MemUsage stats; |
| 532 | CHECK_EQ(get_smaps_rollup(path, &stats), true); |
| 533 | CHECK_EQ(stats.pss, 108384); |
| 534 | } |
| 535 | } |
| 536 | BENCHMARK(BM_SmapsRollup_old); |
| 537 | |
| 538 | static void BM_SmapsRollup_new(benchmark::State& state) { |
| 539 | std::string exec_dir = ::android::base::GetExecutableDirectory(); |
| 540 | std::string path = ::android::base::StringPrintf("%s/testdata1/smaps", exec_dir.c_str()); |
| 541 | for (auto _ : state) { |
| 542 | MemUsage stats; |
| 543 | CHECK_EQ(SmapsOrRollupFromFile(path, &stats), true); |
| 544 | CHECK_EQ(stats.pss, 108384); |
| 545 | } |
| 546 | } |
| 547 | BENCHMARK(BM_SmapsRollup_new); |
| 548 | |
Edgar Arriaga | 0e52370 | 2021-03-01 17:07:23 -0800 | [diff] [blame] | 549 | static void BM_MapsVmaParsing_ForEachVmaFromMaps(benchmark::State& state) { |
| 550 | state.PauseTiming(); |
| 551 | int pid = getpid(); |
| 552 | ProcMemInfo meminfo(pid); |
| 553 | state.ResumeTiming(); |
| 554 | |
| 555 | std::vector<Vma> vmas; |
| 556 | auto vmaCollectorCb = [&](const Vma& vma) { vmas.push_back(vma); }; |
| 557 | for (int i = 0; i < 100000; ++i) { |
| 558 | meminfo.ForEachVmaFromMaps(vmaCollectorCb); |
| 559 | |
| 560 | state.PauseTiming(); |
| 561 | vmas.clear(); |
| 562 | state.ResumeTiming(); |
| 563 | } |
| 564 | } |
| 565 | BENCHMARK(BM_MapsVmaParsing_ForEachVmaFromMaps)->Unit(benchmark::kMillisecond); |
| 566 | |
| 567 | static void BM_MapsVmaParsing_ForEachVma(benchmark::State& state) { |
| 568 | state.PauseTiming(); |
| 569 | int pid = getpid(); |
| 570 | ProcMemInfo meminfo(pid); |
| 571 | state.ResumeTiming(); |
| 572 | |
| 573 | std::vector<Vma> vmas; |
| 574 | auto vmaCollectorCb = [&](const Vma& vma) { vmas.push_back(vma); }; |
| 575 | for (int i = 0; i < 100000; ++i) { |
| 576 | meminfo.ForEachVma(vmaCollectorCb, false); |
| 577 | |
| 578 | state.PauseTiming(); |
| 579 | vmas.clear(); |
| 580 | state.ResumeTiming(); |
| 581 | } |
| 582 | } |
| 583 | BENCHMARK(BM_MapsVmaParsing_ForEachVma)->Unit(benchmark::kMillisecond); |
| 584 | |
Sandeep Patil | a60a776 | 2018-08-29 17:10:47 -0700 | [diff] [blame] | 585 | BENCHMARK_MAIN(); |