scheduler.py引數
中文版
第一題
問題
使用 SJF 和 FIFO 排程程式執行長度為 200 的 3 個作業時，計算響應時間和週轉時間。
第二題
問題
現在做同樣的事情，但有不同長度的作業，即 100、200 和 300。
第三題
問題
現在做同樣的事情，但採用 RR 排程程式，時間片為 1。
輸出太長了，不截圖了，直接把結果複製了。
[whq@whq01 cpu-sched]$ python ./scheduler.py -p RR -q 1 -l 100,200,300 -c
ARG policy RR
ARG jlist 100,200,300
Here is the job list, with the run time of each job:
Job 0 ( length = 100.0 )
Job 1 ( length = 200.0 )
Job 2 ( length = 300.0 )
** Solutions **
Execution trace:
[ time 0 ] Run job 0 for 1.00 secs
[ time 1 ] Run job 1 for 1.00 secs
[ time 2 ] Run job 2 for 1.00 secs
[ time 3 ] Run job 0 for 1.00 secs
[ time 4 ] Run job 1 for 1.00 secs
[ time 5 ] Run job 2 for 1.00 secs
[ time 6 ] Run job 0 for 1.00 secs
[ time 7 ] Run job 1 for 1.00 secs
[ time 8 ] Run job 2 for 1.00 secs
[ time 9 ] Run job 0 for 1.00 secs
[ time 10 ] Run job 1 for 1.00 secs
[ time 11 ] Run job 2 for 1.00 secs
[ time 12 ] Run job 0 for 1.00 secs
[ time 13 ] Run job 1 for 1.00 secs
[ time 14 ] Run job 2 for 1.00 secs
[ time 15 ] Run job 0 for 1.00 secs
[ time 16 ] Run job 1 for 1.00 secs
[ time 17 ] Run job 2 for 1.00 secs
[ time 18 ] Run job 0 for 1.00 secs
[ time 19 ] Run job 1 for 1.00 secs
[ time 20 ] Run job 2 for 1.00 secs
[ time 21 ] Run job 0 for 1.00 secs
[ time 22 ] Run job 1 for 1.00 secs
[ time 23 ] Run job 2 for 1.00 secs
[ time 24 ] Run job 0 for 1.00 secs
[ time 25 ] Run job 1 for 1.00 secs
[ time 26 ] Run job 2 for 1.00 secs
[ time 27 ] Run job 0 for 1.00 secs
[ time 28 ] Run job 1 for 1.00 secs
[ time 29 ] Run job 2 for 1.00 secs
[ time 30 ] Run job 0 for 1.00 secs
[ time 31 ] Run job 1 for 1.00 secs
[ time 32 ] Run job 2 for 1.00 secs
[ time 33 ] Run job 0 for 1.00 secs
[ time 34 ] Run job 1 for 1.00 secs
[ time 35 ] Run job 2 for 1.00 secs
[ time 36 ] Run job 0 for 1.00 secs
[ time 37 ] Run job 1 for 1.00 secs
[ time 38 ] Run job 2 for 1.00 secs
[ time 39 ] Run job 0 for 1.00 secs
[ time 40 ] Run job 1 for 1.00 secs
[ time 41 ] Run job 2 for 1.00 secs
[ time 42 ] Run job 0 for 1.00 secs
[ time 43 ] Run job 1 for 1.00 secs
[ time 44 ] Run job 2 for 1.00 secs
[ time 45 ] Run job 0 for 1.00 secs
[ time 46 ] Run job 1 for 1.00 secs
[ time 47 ] Run job 2 for 1.00 secs
[ time 48 ] Run job 0 for 1.00 secs
[ time 49 ] Run job 1 for 1.00 secs
[ time 50 ] Run job 2 for 1.00 secs
[ time 51 ] Run job 0 for 1.00 secs
[ time 52 ] Run job 1 for 1.00 secs
[ time 53 ] Run job 2 for 1.00 secs
[ time 54 ] Run job 0 for 1.00 secs
[ time 55 ] Run job 1 for 1.00 secs
[ time 56 ] Run job 2 for 1.00 secs
[ time 57 ] Run job 0 for 1.00 secs
[ time 58 ] Run job 1 for 1.00 secs
[ time 59 ] Run job 2 for 1.00 secs
[ time 60 ] Run job 0 for 1.00 secs
[ time 61 ] Run job 1 for 1.00 secs
[ time 62 ] Run job 2 for 1.00 secs
[ time 63 ] Run job 0 for 1.00 secs
[ time 64 ] Run job 1 for 1.00 secs
[ time 65 ] Run job 2 for 1.00 secs
[ time 66 ] Run job 0 for 1.00 secs
[ time 67 ] Run job 1 for 1.00 secs
[ time 68 ] Run job 2 for 1.00 secs
[ time 69 ] Run job 0 for 1.00 secs
[ time 70 ] Run job 1 for 1.00 secs
[ time 71 ] Run job 2 for 1.00 secs
[ time 72 ] Run job 0 for 1.00 secs
[ time 73 ] Run job 1 for 1.00 secs
[ time 74 ] Run job 2 for 1.00 secs
[ time 75 ] Run job 0 for 1.00 secs
[ time 76 ] Run job 1 for 1.00 secs
[ time 77 ] Run job 2 for 1.00 secs
[ time 78 ] Run job 0 for 1.00 secs
[ time 79 ] Run job 1 for 1.00 secs
[ time 80 ] Run job 2 for 1.00 secs
[ time 81 ] Run job 0 for 1.00 secs
[ time 82 ] Run job 1 for 1.00 secs
[ time 83 ] Run job 2 for 1.00 secs
[ time 84 ] Run job 0 for 1.00 secs
[ time 85 ] Run job 1 for 1.00 secs
[ time 86 ] Run job 2 for 1.00 secs
[ time 87 ] Run job 0 for 1.00 secs
[ time 88 ] Run job 1 for 1.00 secs
[ time 89 ] Run job 2 for 1.00 secs
[ time 90 ] Run job 0 for 1.00 secs
[ time 91 ] Run job 1 for 1.00 secs
[ time 92 ] Run job 2 for 1.00 secs
[ time 93 ] Run job 0 for 1.00 secs
[ time 94 ] Run job 1 for 1.00 secs
[ time 95 ] Run job 2 for 1.00 secs
[ time 96 ] Run job 0 for 1.00 secs
[ time 97 ] Run job 1 for 1.00 secs
[ time 98 ] Run job 2 for 1.00 secs
[ time 99 ] Run job 0 for 1.00 secs
[ time 100 ] Run job 1 for 1.00 secs
[ time 101 ] Run job 2 for 1.00 secs
[ time 102 ] Run job 0 for 1.00 secs
[ time 103 ] Run job 1 for 1.00 secs
[ time 104 ] Run job 2 for 1.00 secs
[ time 105 ] Run job 0 for 1.00 secs
[ time 106 ] Run job 1 for 1.00 secs
[ time 107 ] Run job 2 for 1.00 secs
[ time 108 ] Run job 0 for 1.00 secs
[ time 109 ] Run job 1 for 1.00 secs
[ time 110 ] Run job 2 for 1.00 secs
[ time 111 ] Run job 0 for 1.00 secs
[ time 112 ] Run job 1 for 1.00 secs
[ time 113 ] Run job 2 for 1.00 secs
[ time 114 ] Run job 0 for 1.00 secs
[ time 115 ] Run job 1 for 1.00 secs
[ time 116 ] Run job 2 for 1.00 secs
[ time 117 ] Run job 0 for 1.00 secs
[ time 118 ] Run job 1 for 1.00 secs
[ time 119 ] Run job 2 for 1.00 secs
[ time 120 ] Run job 0 for 1.00 secs
[ time 121 ] Run job 1 for 1.00 secs
[ time 122 ] Run job 2 for 1.00 secs
[ time 123 ] Run job 0 for 1.00 secs
[ time 124 ] Run job 1 for 1.00 secs
[ time 125 ] Run job 2 for 1.00 secs
[ time 126 ] Run job 0 for 1.00 secs
[ time 127 ] Run job 1 for 1.00 secs
[ time 128 ] Run job 2 for 1.00 secs
[ time 129 ] Run job 0 for 1.00 secs
[ time 130 ] Run job 1 for 1.00 secs
[ time 131 ] Run job 2 for 1.00 secs
[ time 132 ] Run job 0 for 1.00 secs
[ time 133 ] Run job 1 for 1.00 secs
[ time 134 ] Run job 2 for 1.00 secs
[ time 135 ] Run job 0 for 1.00 secs
[ time 136 ] Run job 1 for 1.00 secs
[ time 137 ] Run job 2 for 1.00 secs
[ time 138 ] Run job 0 for 1.00 secs
[ time 139 ] Run job 1 for 1.00 secs
[ time 140 ] Run job 2 for 1.00 secs
[ time 141 ] Run job 0 for 1.00 secs
[ time 142 ] Run job 1 for 1.00 secs
[ time 143 ] Run job 2 for 1.00 secs
[ time 144 ] Run job 0 for 1.00 secs
[ time 145 ] Run job 1 for 1.00 secs
[ time 146 ] Run job 2 for 1.00 secs
[ time 147 ] Run job 0 for 1.00 secs
[ time 148 ] Run job 1 for 1.00 secs
[ time 149 ] Run job 2 for 1.00 secs
[ time 150 ] Run job 0 for 1.00 secs
[ time 151 ] Run job 1 for 1.00 secs
[ time 152 ] Run job 2 for 1.00 secs
[ time 153 ] Run job 0 for 1.00 secs
[ time 154 ] Run job 1 for 1.00 secs
[ time 155 ] Run job 2 for 1.00 secs
[ time 156 ] Run job 0 for 1.00 secs
[ time 157 ] Run job 1 for 1.00 secs
[ time 158 ] Run job 2 for 1.00 secs
[ time 159 ] Run job 0 for 1.00 secs
[ time 160 ] Run job 1 for 1.00 secs
[ time 161 ] Run job 2 for 1.00 secs
[ time 162 ] Run job 0 for 1.00 secs
[ time 163 ] Run job 1 for 1.00 secs
[ time 164 ] Run job 2 for 1.00 secs
[ time 165 ] Run job 0 for 1.00 secs
[ time 166 ] Run job 1 for 1.00 secs
[ time 167 ] Run job 2 for 1.00 secs
[ time 168 ] Run job 0 for 1.00 secs
[ time 169 ] Run job 1 for 1.00 secs
[ time 170 ] Run job 2 for 1.00 secs
[ time 171 ] Run job 0 for 1.00 secs
[ time 172 ] Run job 1 for 1.00 secs
[ time 173 ] Run job 2 for 1.00 secs
[ time 174 ] Run job 0 for 1.00 secs
[ time 175 ] Run job 1 for 1.00 secs
[ time 176 ] Run job 2 for 1.00 secs
[ time 177 ] Run job 0 for 1.00 secs
[ time 178 ] Run job 1 for 1.00 secs
[ time 179 ] Run job 2 for 1.00 secs
[ time 180 ] Run job 0 for 1.00 secs
[ time 181 ] Run job 1 for 1.00 secs
[ time 182 ] Run job 2 for 1.00 secs
[ time 183 ] Run job 0 for 1.00 secs
[ time 184 ] Run job 1 for 1.00 secs
[ time 185 ] Run job 2 for 1.00 secs
[ time 186 ] Run job 0 for 1.00 secs
[ time 187 ] Run job 1 for 1.00 secs
[ time 188 ] Run job 2 for 1.00 secs
[ time 189 ] Run job 0 for 1.00 secs
[ time 190 ] Run job 1 for 1.00 secs
[ time 191 ] Run job 2 for 1.00 secs
[ time 192 ] Run job 0 for 1.00 secs
[ time 193 ] Run job 1 for 1.00 secs
[ time 194 ] Run job 2 for 1.00 secs
[ time 195 ] Run job 0 for 1.00 secs
[ time 196 ] Run job 1 for 1.00 secs
[ time 197 ] Run job 2 for 1.00 secs
[ time 198 ] Run job 0 for 1.00 secs
[ time 199 ] Run job 1 for 1.00 secs
[ time 200 ] Run job 2 for 1.00 secs
[ time 201 ] Run job 0 for 1.00 secs
[ time 202 ] Run job 1 for 1.00 secs
[ time 203 ] Run job 2 for 1.00 secs
[ time 204 ] Run job 0 for 1.00 secs
[ time 205 ] Run job 1 for 1.00 secs
[ time 206 ] Run job 2 for 1.00 secs
[ time 207 ] Run job 0 for 1.00 secs
[ time 208 ] Run job 1 for 1.00 secs
[ time 209 ] Run job 2 for 1.00 secs
[ time 210 ] Run job 0 for 1.00 secs
[ time 211 ] Run job 1 for 1.00 secs
[ time 212 ] Run job 2 for 1.00 secs
[ time 213 ] Run job 0 for 1.00 secs
[ time 214 ] Run job 1 for 1.00 secs
[ time 215 ] Run job 2 for 1.00 secs
[ time 216 ] Run job 0 for 1.00 secs
[ time 217 ] Run job 1 for 1.00 secs
[ time 218 ] Run job 2 for 1.00 secs
[ time 219 ] Run job 0 for 1.00 secs
[ time 220 ] Run job 1 for 1.00 secs
[ time 221 ] Run job 2 for 1.00 secs
[ time 222 ] Run job 0 for 1.00 secs
[ time 223 ] Run job 1 for 1.00 secs
[ time 224 ] Run job 2 for 1.00 secs
[ time 225 ] Run job 0 for 1.00 secs
[ time 226 ] Run job 1 for 1.00 secs
[ time 227 ] Run job 2 for 1.00 secs
[ time 228 ] Run job 0 for 1.00 secs
[ time 229 ] Run job 1 for 1.00 secs
[ time 230 ] Run job 2 for 1.00 secs
[ time 231 ] Run job 0 for 1.00 secs
[ time 232 ] Run job 1 for 1.00 secs
[ time 233 ] Run job 2 for 1.00 secs
[ time 234 ] Run job 0 for 1.00 secs
[ time 235 ] Run job 1 for 1.00 secs
[ time 236 ] Run job 2 for 1.00 secs
[ time 237 ] Run job 0 for 1.00 secs
[ time 238 ] Run job 1 for 1.00 secs
[ time 239 ] Run job 2 for 1.00 secs
[ time 240 ] Run job 0 for 1.00 secs
[ time 241 ] Run job 1 for 1.00 secs
[ time 242 ] Run job 2 for 1.00 secs
[ time 243 ] Run job 0 for 1.00 secs
[ time 244 ] Run job 1 for 1.00 secs
[ time 245 ] Run job 2 for 1.00 secs
[ time 246 ] Run job 0 for 1.00 secs
[ time 247 ] Run job 1 for 1.00 secs
[ time 248 ] Run job 2 for 1.00 secs
[ time 249 ] Run job 0 for 1.00 secs
[ time 250 ] Run job 1 for 1.00 secs
[ time 251 ] Run job 2 for 1.00 secs
[ time 252 ] Run job 0 for 1.00 secs
[ time 253 ] Run job 1 for 1.00 secs
[ time 254 ] Run job 2 for 1.00 secs
[ time 255 ] Run job 0 for 1.00 secs
[ time 256 ] Run job 1 for 1.00 secs
[ time 257 ] Run job 2 for 1.00 secs
[ time 258 ] Run job 0 for 1.00 secs
[ time 259 ] Run job 1 for 1.00 secs
[ time 260 ] Run job 2 for 1.00 secs
[ time 261 ] Run job 0 for 1.00 secs
[ time 262 ] Run job 1 for 1.00 secs
[ time 263 ] Run job 2 for 1.00 secs
[ time 264 ] Run job 0 for 1.00 secs
[ time 265 ] Run job 1 for 1.00 secs
[ time 266 ] Run job 2 for 1.00 secs
[ time 267 ] Run job 0 for 1.00 secs
[ time 268 ] Run job 1 for 1.00 secs
[ time 269 ] Run job 2 for 1.00 secs
[ time 270 ] Run job 0 for 1.00 secs
[ time 271 ] Run job 1 for 1.00 secs
[ time 272 ] Run job 2 for 1.00 secs
[ time 273 ] Run job 0 for 1.00 secs
[ time 274 ] Run job 1 for 1.00 secs
[ time 275 ] Run job 2 for 1.00 secs
[ time 276 ] Run job 0 for 1.00 secs
[ time 277 ] Run job 1 for 1.00 secs
[ time 278 ] Run job 2 for 1.00 secs
[ time 279 ] Run job 0 for 1.00 secs
[ time 280 ] Run job 1 for 1.00 secs
[ time 281 ] Run job 2 for 1.00 secs
[ time 282 ] Run job 0 for 1.00 secs
[ time 283 ] Run job 1 for 1.00 secs
[ time 284 ] Run job 2 for 1.00 secs
[ time 285 ] Run job 0 for 1.00 secs
[ time 286 ] Run job 1 for 1.00 secs
[ time 287 ] Run job 2 for 1.00 secs
[ time 288 ] Run job 0 for 1.00 secs
[ time 289 ] Run job 1 for 1.00 secs
[ time 290 ] Run job 2 for 1.00 secs
[ time 291 ] Run job 0 for 1.00 secs
[ time 292 ] Run job 1 for 1.00 secs
[ time 293 ] Run job 2 for 1.00 secs
[ time 294 ] Run job 0 for 1.00 secs
[ time 295 ] Run job 1 for 1.00 secs
[ time 296 ] Run job 2 for 1.00 secs
[ time 297 ] Run job 0 for 1.00 secs ( DONE at 298.00 )
[ time 298 ] Run job 1 for 1.00 secs
[ time 299 ] Run job 2 for 1.00 secs
[ time 300 ] Run job 1 for 1.00 secs
[ time 301 ] Run job 2 for 1.00 secs
[ time 302 ] Run job 1 for 1.00 secs
[ time 303 ] Run job 2 for 1.00 secs
[ time 304 ] Run job 1 for 1.00 secs
[ time 305 ] Run job 2 for 1.00 secs
[ time 306 ] Run job 1 for 1.00 secs
[ time 307 ] Run job 2 for 1.00 secs
[ time 308 ] Run job 1 for 1.00 secs
[ time 309 ] Run job 2 for 1.00 secs
[ time 310 ] Run job 1 for 1.00 secs
[ time 311 ] Run job 2 for 1.00 secs
[ time 312 ] Run job 1 for 1.00 secs
[ time 313 ] Run job 2 for 1.00 secs
[ time 314 ] Run job 1 for 1.00 secs
[ time 315 ] Run job 2 for 1.00 secs
[ time 316 ] Run job 1 for 1.00 secs
[ time 317 ] Run job 2 for 1.00 secs
[ time 318 ] Run job 1 for 1.00 secs
[ time 319 ] Run job 2 for 1.00 secs
[ time 320 ] Run job 1 for 1.00 secs
[ time 321 ] Run job 2 for 1.00 secs
[ time 322 ] Run job 1 for 1.00 secs
[ time 323 ] Run job 2 for 1.00 secs
[ time 324 ] Run job 1 for 1.00 secs
[ time 325 ] Run job 2 for 1.00 secs
[ time 326 ] Run job 1 for 1.00 secs
[ time 327 ] Run job 2 for 1.00 secs
[ time 328 ] Run job 1 for 1.00 secs
[ time 329 ] Run job 2 for 1.00 secs
[ time 330 ] Run job 1 for 1.00 secs
[ time 331 ] Run job 2 for 1.00 secs
[ time 332 ] Run job 1 for 1.00 secs
[ time 333 ] Run job 2 for 1.00 secs
[ time 334 ] Run job 1 for 1.00 secs
[ time 335 ] Run job 2 for 1.00 secs
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[ time 337 ] Run job 2 for 1.00 secs
[ time 338 ] Run job 1 for 1.00 secs
[ time 339 ] Run job 2 for 1.00 secs
[ time 340 ] Run job 1 for 1.00 secs
[ time 341 ] Run job 2 for 1.00 secs
[ time 342 ] Run job 1 for 1.00 secs
[ time 343 ] Run job 2 for 1.00 secs
[ time 344 ] Run job 1 for 1.00 secs
[ time 345 ] Run job 2 for 1.00 secs
[ time 346 ] Run job 1 for 1.00 secs
[ time 347 ] Run job 2 for 1.00 secs
[ time 348 ] Run job 1 for 1.00 secs
[ time 349 ] Run job 2 for 1.00 secs
[ time 350 ] Run job 1 for 1.00 secs
[ time 351 ] Run job 2 for 1.00 secs
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[ time 353 ] Run job 2 for 1.00 secs
[ time 354 ] Run job 1 for 1.00 secs
[ time 355 ] Run job 2 for 1.00 secs
[ time 356 ] Run job 1 for 1.00 secs
[ time 357 ] Run job 2 for 1.00 secs
[ time 358 ] Run job 1 for 1.00 secs
[ time 359 ] Run job 2 for 1.00 secs
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[ time 361 ] Run job 2 for 1.00 secs
[ time 362 ] Run job 1 for 1.00 secs
[ time 363 ] Run job 2 for 1.00 secs
[ time 364 ] Run job 1 for 1.00 secs
[ time 365 ] Run job 2 for 1.00 secs
[ time 366 ] Run job 1 for 1.00 secs
[ time 367 ] Run job 2 for 1.00 secs
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[ time 369 ] Run job 2 for 1.00 secs
[ time 370 ] Run job 1 for 1.00 secs
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[ time 372 ] Run job 1 for 1.00 secs
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[ time 377 ] Run job 2 for 1.00 secs
[ time 378 ] Run job 1 for 1.00 secs
[ time 379 ] Run job 2 for 1.00 secs
[ time 380 ] Run job 1 for 1.00 secs
[ time 381 ] Run job 2 for 1.00 secs
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[ time 384 ] Run job 1 for 1.00 secs
[ time 385 ] Run job 2 for 1.00 secs
[ time 386 ] Run job 1 for 1.00 secs
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[ time 389 ] Run job 2 for 1.00 secs
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[ time 495 ] Run job 2 for 1.00 secs
[ time 496 ] Run job 1 for 1.00 secs
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[ time 498 ] Run job 1 for 1.00 secs ( DONE at 499.00 )
[ time 499 ] Run job 2 for 1.00 secs
[ time 500 ] Run job 2 for 1.00 secs
[ time 501 ] Run job 2 for 1.00 secs
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[ time 522 ] Run job 2 for 1.00 secs
[ time 523 ] Run job 2 for 1.00 secs
[ time 524 ] Run job 2 for 1.00 secs
[ time 525 ] Run job 2 for 1.00 secs
[ time 526 ] Run job 2 for 1.00 secs
[ time 527 ] Run job 2 for 1.00 secs
[ time 528 ] Run job 2 for 1.00 secs
[ time 529 ] Run job 2 for 1.00 secs
[ time 530 ] Run job 2 for 1.00 secs
[ time 531 ] Run job 2 for 1.00 secs
[ time 532 ] Run job 2 for 1.00 secs
[ time 533 ] Run job 2 for 1.00 secs
[ time 534 ] Run job 2 for 1.00 secs
[ time 535 ] Run job 2 for 1.00 secs
[ time 536 ] Run job 2 for 1.00 secs
[ time 537 ] Run job 2 for 1.00 secs
[ time 538 ] Run job 2 for 1.00 secs
[ time 539 ] Run job 2 for 1.00 secs
[ time 540 ] Run job 2 for 1.00 secs
[ time 541 ] Run job 2 for 1.00 secs
[ time 542 ] Run job 2 for 1.00 secs
[ time 543 ] Run job 2 for 1.00 secs
[ time 544 ] Run job 2 for 1.00 secs
[ time 545 ] Run job 2 for 1.00 secs
[ time 546 ] Run job 2 for 1.00 secs
[ time 547 ] Run job 2 for 1.00 secs
[ time 548 ] Run job 2 for 1.00 secs
[ time 549 ] Run job 2 for 1.00 secs
[ time 550 ] Run job 2 for 1.00 secs
[ time 551 ] Run job 2 for 1.00 secs
[ time 552 ] Run job 2 for 1.00 secs
[ time 553 ] Run job 2 for 1.00 secs
[ time 554 ] Run job 2 for 1.00 secs
[ time 555 ] Run job 2 for 1.00 secs
[ time 556 ] Run job 2 for 1.00 secs
[ time 557 ] Run job 2 for 1.00 secs
[ time 558 ] Run job 2 for 1.00 secs
[ time 559 ] Run job 2 for 1.00 secs
[ time 560 ] Run job 2 for 1.00 secs
[ time 561 ] Run job 2 for 1.00 secs
[ time 562 ] Run job 2 for 1.00 secs
[ time 563 ] Run job 2 for 1.00 secs
[ time 564 ] Run job 2 for 1.00 secs
[ time 565 ] Run job 2 for 1.00 secs
[ time 566 ] Run job 2 for 1.00 secs
[ time 567 ] Run job 2 for 1.00 secs
[ time 568 ] Run job 2 for 1.00 secs
[ time 569 ] Run job 2 for 1.00 secs
[ time 570 ] Run job 2 for 1.00 secs
[ time 571 ] Run job 2 for 1.00 secs
[ time 572 ] Run job 2 for 1.00 secs
[ time 573 ] Run job 2 for 1.00 secs
[ time 574 ] Run job 2 for 1.00 secs
[ time 575 ] Run job 2 for 1.00 secs
[ time 576 ] Run job 2 for 1.00 secs
[ time 577 ] Run job 2 for 1.00 secs
[ time 578 ] Run job 2 for 1.00 secs
[ time 579 ] Run job 2 for 1.00 secs
[ time 580 ] Run job 2 for 1.00 secs
[ time 581 ] Run job 2 for 1.00 secs
[ time 582 ] Run job 2 for 1.00 secs
[ time 583 ] Run job 2 for 1.00 secs
[ time 584 ] Run job 2 for 1.00 secs
[ time 585 ] Run job 2 for 1.00 secs
[ time 586 ] Run job 2 for 1.00 secs
[ time 587 ] Run job 2 for 1.00 secs
[ time 588 ] Run job 2 for 1.00 secs
[ time 589 ] Run job 2 for 1.00 secs
[ time 590 ] Run job 2 for 1.00 secs
[ time 591 ] Run job 2 for 1.00 secs
[ time 592 ] Run job 2 for 1.00 secs
[ time 593 ] Run job 2 for 1.00 secs
[ time 594 ] Run job 2 for 1.00 secs
[ time 595 ] Run job 2 for 1.00 secs
[ time 596 ] Run job 2 for 1.00 secs
[ time 597 ] Run job 2 for 1.00 secs
[ time 598 ] Run job 2 for 1.00 secs
[ time 599 ] Run job 2 for 1.00 secs ( DONE at 600.00 )
Final statistics:
Job 0 -- Response: 0.00 Turnaround 298.00 Wait 198.00
Job 1 -- Response: 1.00 Turnaround 499.00 Wait 299.00
Job 2 -- Response: 2.00 Turnaround 600.00 Wait 300.00
Average -- Response: 1.00 Turnaround 465.67 Wait 265.67
[whq@whq01 cpu-sched]$
第四題
問題
對於什麼型別的工作負載，SJF 提供與 FIFO 相同的週轉時間？
長度更短的負載先到的情況下，SLF 與 SJF 有相同的週轉時間。
第五題
問題
對於什麼型別的工作負載和量子長度，SJF 與 RR 提供相同的響應時間？
量子長度大於最長的工作負載的長度時，RR可以看作是SJF，因此有相同的響應時間
第六題
問題
隨著工作長度的增加，SJF 的響應時間會怎樣？你能使用模擬程式來展示趨勢嗎？
隨著工作長度的增加，響應時間會越來越大。
模擬程式：
三次模擬，每次的任務長度分別為100，200，300，每次都是三個任務
可以看到，響應時間分別為100，200，300
響應時間隨著工作長度的增加而增加。
第七題
問題
隨著量子長度的增加，RR 的響應時間會怎樣？你能寫出一個方程，計算給定 N 個工作時，最壞情況的響應時間嗎？
隨著量子長度的增加，RR 的響應時間會越來越大。
設量子長度為m，且每個任務的長度比量子長度更長，則響應時間的計算過程為：
