| 1 | |
| 2 | = GPFS Performance Report (Uses gpfsperf Command) = |
| 3 | |
| 4 | rock, rock@nchc.org.tw |
| 5 | |
| 6 | [[BR]] |
| 7 | [[BR]] |
| 8 | == Machine Informance == |
| 9 | Node |
| 10 | 8 nodes (1 server , 7 client provide disks) |
| 11 | CPU |
| 12 | Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (each node) |
| 13 | Memory |
| 14 | 2GB DDR2 667 (each node) |
| 15 | Disk |
| 16 | 320G+160G (each node) |
| 17 | All nodes: WD 320G * 7 + 160G * 7 = 3.36T |
| 18 | NIC |
| 19 | Intel Corporation 82566DM Gigabit Network Connection |
| 20 | Switch |
| 21 | D-link 24 port GE switch |
| 22 | |
| 23 | |
| 24 | |
| 25 | 1. 8 Nodes, Replicate, Adjust Parameters |
| 26 | |
| 27 | Context: Create 16G data (sequence) |
| 28 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G -n 16g -r 1m |
| 29 | ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G |
| 30 | recSize 1M nBytes 16G fileSize 16G |
| 31 | nProcesses 1 nThreadsPerProcess 1 |
| 32 | file cache flushed before test |
| 33 | not using data shipping |
| 34 | not using direct I/O |
| 35 | offsets accessed will cycle through the same file segment |
| 36 | not using shared memory buffer |
| 37 | not releasing byte-range token after open |
| 38 | no fsync at end of test |
| 39 | Data rate was 54649.55 Kbytes/sec, thread utilization 1.000 |
| 40 | |
| 41 | Context: Read 16G data (sequence) |
| 42 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G -n 16g -r 1m |
| 43 | ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G |
| 44 | recSize 1M nBytes 16G fileSize 16G |
| 45 | nProcesses 1 nThreadsPerProcess 1 |
| 46 | file cache flushed before test |
| 47 | not using data shipping |
| 48 | not using direct I/O |
| 49 | offsets accessed will cycle through the same file segment |
| 50 | not using shared memory buffer |
| 51 | not releasing byte-range token after open |
| 52 | Data rate was 83583.30 Kbytes/sec, thread utilization 1.000 |
| 53 | |
| 54 | Context: Write 16G data (sequence) |
| 55 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G -n 16g -r 1m |
| 56 | ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G |
| 57 | recSize 1M nBytes 16G fileSize 16G |
| 58 | nProcesses 1 nThreadsPerProcess 1 |
| 59 | file cache flushed before test |
| 60 | not using data shipping |
| 61 | not using direct I/O |
| 62 | offsets accessed will cycle through the same file segment |
| 63 | not using shared memory buffer |
| 64 | not releasing byte-range token after open |
| 65 | no fsync at end of test |
| 66 | Data rate was 50898.76 Kbytes/sec, thread utilization 1.000 |
| 67 | |
| 68 | |
| 69 | |
| 70 | 2. 8 Nodes, No Replicate, Adjust Parameters |
| 71 | |
| 72 | Context: Create 16G data (sequence) |
| 73 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_2 -n 16g -r 1m |
| 74 | ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_2 |
| 75 | recSize 1M nBytes 16G fileSize 16G |
| 76 | nProcesses 1 nThreadsPerProcess 1 |
| 77 | file cache flushed before test |
| 78 | not using data shipping |
| 79 | not using direct I/O |
| 80 | offsets accessed will cycle through the same file segment |
| 81 | not using shared memory buffer |
| 82 | not releasing byte-range token after open |
| 83 | no fsync at end of test |
| 84 | Data rate was 108330.24 Kbytes/sec, thread utilization 1.000 |
| 85 | |
| 86 | Context: Read 16G data (sequence) |
| 87 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_2 -n 16g -r 1m |
| 88 | ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_2 |
| 89 | recSize 1M nBytes 16G fileSize 16G |
| 90 | nProcesses 1 nThreadsPerProcess 1 |
| 91 | file cache flushed before test |
| 92 | not using data shipping |
| 93 | not using direct I/O |
| 94 | offsets accessed will cycle through the same file segment |
| 95 | not using shared memory buffer |
| 96 | not releasing byte-range token after open |
| 97 | Data rate was 82420.96 Kbytes/sec, thread utilization 1.000 |
| 98 | |
| 99 | Context: Write 16G data (sequence) |
| 100 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_2 -n 16g -r 1m |
| 101 | ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_2 |
| 102 | recSize 1M nBytes 16G fileSize 16G |
| 103 | nProcesses 1 nThreadsPerProcess 1 |
| 104 | file cache flushed before test |
| 105 | not using data shipping |
| 106 | not using direct I/O |
| 107 | offsets accessed will cycle through the same file segment |
| 108 | not using shared memory buffer |
| 109 | not releasing byte-range token after open |
| 110 | no fsync at end of test |
| 111 | Data rate was 108820.45 Kbytes/sec, thread utilization 1.000 |
| 112 | |
| 113 | |
| 114 | |
| 115 | 3. Multi-thread |
| 116 | 3.1 Create Operation |
| 117 | |
| 118 | Context: Create 16G data, 1 thread |
| 119 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 1 |
| 120 | ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 |
| 121 | recSize 1M nBytes 16G fileSize 16G |
| 122 | nProcesses 1 nThreadsPerProcess 1 |
| 123 | file cache flushed before test |
| 124 | not using data shipping |
| 125 | not using direct I/O |
| 126 | offsets accessed will cycle through the same file segment |
| 127 | not using shared memory buffer |
| 128 | not releasing byte-range token after open |
| 129 | no fsync at end of test |
| 130 | Data rate was 50800.95 Kbytes/sec, thread utilization 1.000 |
| 131 | |
| 132 | Context: Create 16G data, 2 thread |
| 133 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 2 |
| 134 | ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 |
| 135 | recSize 1M nBytes 16G fileSize 16G |
| 136 | nProcesses 1 nThreadsPerProcess 2 |
| 137 | file cache flushed before test |
| 138 | not using data shipping |
| 139 | not using direct I/O |
| 140 | offsets accessed will cycle through the same file segment |
| 141 | not using shared memory buffer |
| 142 | not releasing byte-range token after open |
| 143 | no fsync at end of test |
| 144 | Data rate was 50297.13 Kbytes/sec, thread utilization 0.999 |
| 145 | |
| 146 | Context: Create 16G data, 4 thread |
| 147 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 4 |
| 148 | ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 |
| 149 | recSize 1M nBytes 16G fileSize 16G |
| 150 | nProcesses 1 nThreadsPerProcess 4 |
| 151 | file cache flushed before test |
| 152 | not using data shipping |
| 153 | not using direct I/O |
| 154 | offsets accessed will cycle through the same file segment |
| 155 | not using shared memory buffer |
| 156 | not releasing byte-range token after open |
| 157 | no fsync at end of test |
| 158 | Data rate was 50848.45 Kbytes/sec, thread utilization 0.998 |
| 159 | |
| 160 | Context: Create 16G data, 8 thread |
| 161 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 8 |
| 162 | ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 |
| 163 | recSize 1M nBytes 16G fileSize 16G |
| 164 | nProcesses 1 nThreadsPerProcess 8 |
| 165 | file cache flushed before test |
| 166 | not using data shipping |
| 167 | not using direct I/O |
| 168 | offsets accessed will cycle through the same file segment |
| 169 | not using shared memory buffer |
| 170 | not releasing byte-range token after open |
| 171 | no fsync at end of test |
| 172 | Data rate was 50469.88 Kbytes/sec, thread utilization 0.963 |
| 173 | |
| 174 | Context: Create 16G data, 16 thread |
| 175 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 16 |
| 176 | ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 |
| 177 | recSize 1M nBytes 16G fileSize 16G |
| 178 | nProcesses 1 nThreadsPerProcess 16 |
| 179 | file cache flushed before test |
| 180 | not using data shipping |
| 181 | not using direct I/O |
| 182 | offsets accessed will cycle through the same file segment |
| 183 | not using shared memory buffer |
| 184 | not releasing byte-range token after open |
| 185 | no fsync at end of test |
| 186 | Data rate was 52578.33 Kbytes/sec, thread utilization 0.919 |
| 187 | |
| 188 | Context: Create 16G data, 32 thread |
| 189 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 32 |
| 190 | ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 |
| 191 | recSize 1M nBytes 16G fileSize 16G |
| 192 | nProcesses 1 nThreadsPerProcess 32 |
| 193 | file cache flushed before test |
| 194 | not using data shipping |
| 195 | not using direct I/O |
| 196 | offsets accessed will cycle through the same file segment |
| 197 | not using shared memory buffer |
| 198 | not releasing byte-range token after open |
| 199 | no fsync at end of test |
| 200 | Data rate was 53107.28 Kbytes/sec, thread utilization 0.966 |
| 201 | |
| 202 | Context: Create 16G data, 64 thread |
| 203 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 -n 16g -r 1m -th 64 |
| 204 | ./gpfsperf create seq /home/gpfs_mount/gpfsperf_16G_3 |
| 205 | recSize 1M nBytes 16G fileSize 16G |
| 206 | nProcesses 1 nThreadsPerProcess 64 |
| 207 | file cache flushed before test |
| 208 | not using data shipping |
| 209 | not using direct I/O |
| 210 | offsets accessed will cycle through the same file segment |
| 211 | not using shared memory buffer |
| 212 | not releasing byte-range token after open |
| 213 | no fsync at end of test |
| 214 | Data rate was 53019.53 Kbytes/sec, thread utilization 0.978 |
| 215 | |
| 216 | |
| 217 | 3.2 Read Operation |
| 218 | |
| 219 | Context: Read 16G data, 1 thread |
| 220 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 1 |
| 221 | |
| 222 | ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 |
| 223 | |
| 224 | recSize 1M nBytes 16G fileSize 16G |
| 225 | |
| 226 | nProcesses 1 nThreadsPerProcess 1 |
| 227 | |
| 228 | file cache flushed before test |
| 229 | |
| 230 | not using data shipping |
| 231 | |
| 232 | not using direct I/O |
| 233 | |
| 234 | offsets accessed will cycle through the same file segment |
| 235 | |
| 236 | not using shared memory buffer |
| 237 | |
| 238 | not releasing byte-range token after open |
| 239 | |
| 240 | Data rate was 81685.18 Kbytes/sec, thread utilization 1.000 |
| 241 | |
| 242 | |
| 243 | Context: Read 16G data, 2 thread |
| 244 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 2 |
| 245 | |
| 246 | ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 |
| 247 | |
| 248 | recSize 1M nBytes 16G fileSize 16G |
| 249 | |
| 250 | nProcesses 1 nThreadsPerProcess 2 |
| 251 | |
| 252 | file cache flushed before test |
| 253 | |
| 254 | not using data shipping |
| 255 | |
| 256 | not using direct I/O |
| 257 | |
| 258 | offsets accessed will cycle through the same file segment |
| 259 | |
| 260 | not using shared memory buffer |
| 261 | |
| 262 | not releasing byte-range token after open |
| 263 | |
| 264 | Data rate was 90844.61 Kbytes/sec, thread utilization 0.999 |
| 265 | |
| 266 | |
| 267 | Context: Read 16G data, 4 thread |
| 268 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 4 |
| 269 | |
| 270 | ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 |
| 271 | |
| 272 | recSize 1M nBytes 16G fileSize 16G |
| 273 | |
| 274 | nProcesses 1 nThreadsPerProcess 4 |
| 275 | |
| 276 | file cache flushed before test |
| 277 | |
| 278 | not using data shipping |
| 279 | |
| 280 | not using direct I/O |
| 281 | |
| 282 | offsets accessed will cycle through the same file segment |
| 283 | |
| 284 | not using shared memory buffer |
| 285 | |
| 286 | not releasing byte-range token after open |
| 287 | |
| 288 | Data rate was 89538.89 Kbytes/sec, thread utilization 0.997 |
| 289 | |
| 290 | |
| 291 | Context: Read 16G data, 8 thread |
| 292 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 8 |
| 293 | |
| 294 | ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 |
| 295 | |
| 296 | recSize 1M nBytes 16G fileSize 16G |
| 297 | |
| 298 | nProcesses 1 nThreadsPerProcess 8 |
| 299 | |
| 300 | file cache flushed before test |
| 301 | |
| 302 | not using data shipping |
| 303 | |
| 304 | not using direct I/O |
| 305 | |
| 306 | offsets accessed will cycle through the same file segment |
| 307 | |
| 308 | not using shared memory buffer |
| 309 | |
| 310 | not releasing byte-range token after open |
| 311 | |
| 312 | Data rate was 87044.97 Kbytes/sec, thread utilization 0.994 |
| 313 | |
| 314 | |
| 315 | Context: Read 16G data, 16 thread |
| 316 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 16 |
| 317 | |
| 318 | ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 |
| 319 | |
| 320 | recSize 1M nBytes 16G fileSize 16G |
| 321 | |
| 322 | nProcesses 1 nThreadsPerProcess 16 |
| 323 | |
| 324 | file cache flushed before test |
| 325 | |
| 326 | not using data shipping |
| 327 | |
| 328 | not using direct I/O |
| 329 | |
| 330 | offsets accessed will cycle through the same file segment |
| 331 | |
| 332 | not using shared memory buffer |
| 333 | |
| 334 | not releasing byte-range token after open |
| 335 | |
| 336 | Data rate was 94899.75 Kbytes/sec, thread utilization 0.990 |
| 337 | |
| 338 | Context: Read 16G data, 32 thread |
| 339 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 32 |
| 340 | ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 |
| 341 | recSize 1M nBytes 16G fileSize 16G |
| 342 | nProcesses 1 nThreadsPerProcess 32 |
| 343 | file cache flushed before test |
| 344 | not using data shipping |
| 345 | not using direct I/O |
| 346 | offsets accessed will cycle through the same file segment |
| 347 | not using shared memory buffer |
| 348 | not releasing byte-range token after open |
| 349 | Data rate was 90657.18 Kbytes/sec, thread utilization 0.983 |
| 350 | |
| 351 | Context: Read 16G data, 64 thread |
| 352 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 64 |
| 353 | ./gpfsperf read seq /home/gpfs_mount/gpfsperf_16G_3 |
| 354 | recSize 1M nBytes 16G fileSize 16G |
| 355 | nProcesses 1 nThreadsPerProcess 64 |
| 356 | file cache flushed before test |
| 357 | not using data shipping |
| 358 | not using direct I/O |
| 359 | offsets accessed will cycle through the same file segment |
| 360 | not using shared memory buffer |
| 361 | not releasing byte-range token after open |
| 362 | Data rate was 89751.67 Kbytes/sec, thread utilization 0.983 |
| 363 | |
| 364 | |
| 365 | 3.3 Write Operation |
| 366 | |
| 367 | Context: Write 16G data, 1 thread |
| 368 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 1 |
| 369 | |
| 370 | ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 |
| 371 | |
| 372 | recSize 1M nBytes 16G fileSize 16G |
| 373 | |
| 374 | nProcesses 1 nThreadsPerProcess 1 |
| 375 | |
| 376 | file cache flushed before test |
| 377 | |
| 378 | not using data shipping |
| 379 | |
| 380 | not using direct I/O |
| 381 | |
| 382 | offsets accessed will cycle through the same file segment |
| 383 | |
| 384 | not using shared memory buffer |
| 385 | |
| 386 | not releasing byte-range token after open |
| 387 | |
| 388 | no fsync at end of test |
| 389 | |
| 390 | Data rate was 50819.17 Kbytes/sec, thread utilization 1.000 |
| 391 | |
| 392 | Context: Write 16G data, 2 thread |
| 393 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 2 |
| 394 | |
| 395 | ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 |
| 396 | |
| 397 | recSize 1M nBytes 16G fileSize 16G |
| 398 | |
| 399 | nProcesses 1 nThreadsPerProcess 2 |
| 400 | |
| 401 | file cache flushed before test |
| 402 | |
| 403 | not using data shipping |
| 404 | |
| 405 | not using direct I/O |
| 406 | |
| 407 | offsets accessed will cycle through the same file segment |
| 408 | |
| 409 | not using shared memory buffer |
| 410 | |
| 411 | not releasing byte-range token after open |
| 412 | |
| 413 | no fsync at end of test |
| 414 | |
| 415 | Data rate was 50588.81 Kbytes/sec, thread utilization 1.000 |
| 416 | |
| 417 | Context: Write 16G data, 4 thread |
| 418 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 4 |
| 419 | |
| 420 | ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 |
| 421 | |
| 422 | recSize 1M nBytes 16G fileSize 16G |
| 423 | |
| 424 | nProcesses 1 nThreadsPerProcess 4 |
| 425 | |
| 426 | file cache flushed before test |
| 427 | |
| 428 | not using data shipping |
| 429 | |
| 430 | not using direct I/O |
| 431 | |
| 432 | offsets accessed will cycle through the same file segment |
| 433 | |
| 434 | not using shared memory buffer |
| 435 | |
| 436 | not releasing byte-range token after open |
| 437 | |
| 438 | no fsync at end of test |
| 439 | |
| 440 | Data rate was 50694.87 Kbytes/sec, thread utilization 0.999 |
| 441 | |
| 442 | |
| 443 | Context: Write 16G data, 8 thread |
| 444 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 8 |
| 445 | |
| 446 | ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 |
| 447 | |
| 448 | recSize 1M nBytes 16G fileSize 16G |
| 449 | |
| 450 | nProcesses 1 nThreadsPerProcess 8 |
| 451 | |
| 452 | file cache flushed before test |
| 453 | |
| 454 | not using data shipping |
| 455 | |
| 456 | not using direct I/O |
| 457 | |
| 458 | offsets accessed will cycle through the same file segment |
| 459 | |
| 460 | not using shared memory buffer |
| 461 | |
| 462 | not releasing byte-range token after open |
| 463 | |
| 464 | no fsync at end of test |
| 465 | |
| 466 | Data rate was 51648.90 Kbytes/sec, thread utilization 0.985 |
| 467 | |
| 468 | |
| 469 | Context: Write 16G data, 16 thread |
| 470 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 16 |
| 471 | |
| 472 | ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 |
| 473 | |
| 474 | recSize 1M nBytes 16G fileSize 16G |
| 475 | |
| 476 | nProcesses 1 nThreadsPerProcess 16 |
| 477 | |
| 478 | file cache flushed before test |
| 479 | |
| 480 | not using data shipping |
| 481 | |
| 482 | not using direct I/O |
| 483 | |
| 484 | offsets accessed will cycle through the same file segment |
| 485 | |
| 486 | not using shared memory buffer |
| 487 | |
| 488 | not releasing byte-range token after open |
| 489 | |
| 490 | no fsync at end of test |
| 491 | |
| 492 | Data rate was 53019.51 Kbytes/sec, thread utilization 0.924 |
| 493 | |
| 494 | Context: Write 16G data, 32 thread |
| 495 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 32 |
| 496 | |
| 497 | ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 |
| 498 | |
| 499 | recSize 1M nBytes 16G fileSize 16G |
| 500 | |
| 501 | nProcesses 1 nThreadsPerProcess 32 |
| 502 | |
| 503 | file cache flushed before test |
| 504 | |
| 505 | not using data shipping |
| 506 | |
| 507 | not using direct I/O |
| 508 | |
| 509 | offsets accessed will cycle through the same file segment |
| 510 | |
| 511 | not using shared memory buffer |
| 512 | |
| 513 | not releasing byte-range token after open |
| 514 | |
| 515 | no fsync at end of test |
| 516 | |
| 517 | Data rate was 53003.69 Kbytes/sec, thread utilization 0.966 |
| 518 | |
| 519 | |
| 520 | Context: Write 16G data, 64 thread |
| 521 | gpfs-server:/usr/lpp/mmfs/samples/perf# ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 -r 1m -n 16g -th 64 |
| 522 | |
| 523 | ./gpfsperf write seq /home/gpfs_mount/gpfsperf_16G_3 |
| 524 | |
| 525 | recSize 1M nBytes 16G fileSize 16G |
| 526 | |
| 527 | nProcesses 1 nThreadsPerProcess 64 |
| 528 | |
| 529 | file cache flushed before test |
| 530 | |
| 531 | not using data shipping |
| 532 | |
| 533 | not using direct I/O |
| 534 | |
| 535 | offsets accessed will cycle through the same file segment |
| 536 | |
| 537 | not using shared memory buffer |
| 538 | |
| 539 | not releasing byte-range token after open |
| 540 | |
| 541 | no fsync at end of test |
| 542 | |
| 543 | Data rate was 53590.98 Kbytes/sec, thread utilization 0.971 |
| 544 | |
| 545 | |
| 546 | |
| 547 | |
| 548 | 4. Compare |
| 549 | |
| 550 | |
| 551 | All kind Operation (sequence) |
| 552 | |
| 553 | Replicate & Adjust Parameters |
| 554 | No Replicate & Adjust Parameters |
| 555 | Create |
| 556 | 54649.55 KB/s |
| 557 | 108330.24 KB/s |
| 558 | Read |
| 559 | 83583.30 KB/s |
| 560 | 82420.96 KB/s |
| 561 | Write |
| 562 | 50898.76 KB/s |
| 563 | 108820.45 KB/s |
| 564 | |
| 565 | |
| 566 | |
| 567 | |
| 568 | |
| 569 | |
| 570 | |
| 571 | Multi-thread (sequence) |
| 572 | |
| 573 | |
| 574 | 1 |
| 575 | 2 |
| 576 | 4 |
| 577 | 8 |
| 578 | 16 |
| 579 | 32 |
| 580 | 64 |
| 581 | Create |
| 582 | 50800.95 KB/s |
| 583 | 50297.13 KB/s |
| 584 | 50848.45 KB/s |
| 585 | 50469.88 KB/s |
| 586 | 52578.33 KB/s |
| 587 | 53107.28 KB/s |
| 588 | 53019.53 KB/s |
| 589 | Read |
| 590 | 81685.18 KB/s |
| 591 | 90844.61 KB/s |
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| 593 | 87044.97 KB/s |
| 594 | 94899.75 KB/s |
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| 596 | 89751.67 KB/s |
| 597 | Write |
| 598 | 50819.17 KB/s |
| 599 | 50588.81 KB/s |
| 600 | 50694.87 KB/s |
| 601 | 51648.90 KB/s |
| 602 | 53019.51 KB/s |
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