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1 | <HTML> |
| 2 | <HEAD> |
| 3 | <META NAME="COPYRIGHT" CONTENT="Copyright 1997-2003, All Rights Reserved"> |
| 4 | <META NAME="DOCNUMBER" CONTENT="CUPS-SPS-1.2"> |
| 5 | <META NAME="Author" CONTENT="Easy Software Products"> |
| 6 | <TITLE>CUPS Software Performance Specification</TITLE> |
| 7 | </HEAD> |
| 8 | <BODY> |
| 9 | |
| 10 | <H1>Scope</H1> |
| 11 | |
| 12 | <H2>Identification</H2> |
| 13 | |
| 14 | <P>This software performance specification provides an analysis of the |
| 15 | memory, disk, and processor utilitization of each program in the |
| 16 | Common UNIX Printing System ("CUPS") Version 1.2.</P> |
| 17 | |
| 18 | <P>For the purposes of comparison, all figures are for the Linux Intel |
| 19 | platform. Memory utilization on other platforms should be similar. |
| 20 | |
| 21 | <EMBED SRC="system-overview.shtml"> |
| 22 | |
| 23 | <H2>Document Overview</H2> |
| 24 | |
| 25 | <P>This software performance specification is organized into the |
| 26 | following sections:</P> |
| 27 | |
| 28 | <UL> |
| 29 | <LI>1 - Scope</LI> |
| 30 | <LI>2 - References</LI> |
| 31 | <LI>3 - Programs</LI> |
| 32 | <LI>4 - Scheduler Objects</LI> |
| 33 | <LI>A - Glossary</LI> |
| 34 | </UL> |
| 35 | |
| 36 | <EMBED SRC="references.shtml"> |
| 37 | |
| 38 | <H1>Programs</H1> |
| 39 | |
| 40 | <P>The following table describes the average memory, disk, and CPU usage of |
| 41 | each program in CUPS. |
| 42 | |
| 43 | <P>The base memory column shows the initial memory requirements for each |
| 44 | program, including any shared libraries that are provided by CUPS. |
| 45 | |
| 46 | <P>The max memory column shows the maximum amount of memory that will be |
| 47 | used by the program based upon the default configuration settings supplied |
| 48 | with CUPS. |
| 49 | |
| 50 | <P>The temp files column indicates whether any temporary files are created. |
| 51 | |
| 52 | <P>The CPU usage column specifies a relative CPU usage by the program under |
| 53 | normal conditions, either low, medium, or high. Low usage indicates that |
| 54 | the program will never use more than 33% of the available CPU time. Medium |
| 55 | usage indicates the program will use as much as 66% of the available CPU |
| 56 | time. High usage indicates the program uses 66% or more of the available CPU |
| 57 | time. |
| 58 | |
| 59 | <CENTER><TABLE WIDTH="80%" BORDER="1"> |
| 60 | <TR> |
| 61 | <TH COLSPAN="3">Backends</TH> |
| 62 | </TR> |
| 63 | <TR> |
| 64 | <TH>Program</TH> |
| 65 | <TH>Base Memory</TH> |
| 66 | <TH>Max Memory</TH> |
| 67 | <TH>Temp Files</TH> |
| 68 | <TH>CPU Usage</TH> |
| 69 | </TR> |
| 70 | <TR> |
| 71 | <TD>ipp</TD> |
| 72 | <TD>91k</TD> |
| 73 | <TD>256k</TD> |
| 74 | <TD>Up to size of print file</TD> |
| 75 | <TD>Low</TD> |
| 76 | </TR> |
| 77 | <TR> |
| 78 | <TD>lpd</TD> |
| 79 | <TD>89k</TD> |
| 80 | <TD>89k</TD> |
| 81 | <TD>Up to size of print file</TD> |
| 82 | <TD>Low</TD> |
| 83 | </TR> |
| 84 | <TR> |
| 85 | <TD>parallel</TD> |
| 86 | <TD>85k</TD> |
| 87 | <TD>85k</TD> |
| 88 | <TD>Up to size of print file</TD> |
| 89 | <TD>Low</TD> |
| 90 | </TR> |
| 91 | <TR> |
| 92 | <TD>serial</TD> |
| 93 | <TD>85k</TD> |
| 94 | <TD>85k</TD> |
| 95 | <TD>Up to size of print file</TD> |
| 96 | <TD>Low</TD> |
| 97 | </TR> |
| 98 | <TR> |
| 99 | <TD>socket</TD> |
| 100 | <TD>85k</TD> |
| 101 | <TD>85k</TD> |
| 102 | <TD>Up to size of print file</TD> |
| 103 | <TD>Low</TD> |
| 104 | </TR> |
| 105 | <TR> |
| 106 | <TD>usb</TD> |
| 107 | <TD>85k</TD> |
| 108 | <TD>85k</TD> |
| 109 | <TD>Up to size of print file</TD> |
| 110 | <TD>Low</TD> |
| 111 | </TR> |
| 112 | <TR> |
| 113 | <TH COLSPAN="3">CGIs</TH> |
| 114 | </TR> |
| 115 | <TR> |
| 116 | <TH>Program</TH> |
| 117 | <TH>Base Memory</TH> |
| 118 | <TH>Max Memory</TH> |
| 119 | <TH>Temp Files</TH> |
| 120 | <TH>CPU Usage</TH> |
| 121 | </TR> |
| 122 | <TR> |
| 123 | <TD>admin.cgi</TD> |
| 124 | <TD>107k</TD> |
| 125 | <TD>256k</TD> |
| 126 | <TD>Up to size of PPD file</TD> |
| 127 | <TD>Medium</TD> |
| 128 | </TR> |
| 129 | <TR> |
| 130 | <TD>classes.cgi</TD> |
| 131 | <TD>95k</TD> |
| 132 | <TD>Size of class objects</TD> |
| 133 | <TD>None</TD> |
| 134 | <TD>Medium</TD> |
| 135 | </TR> |
| 136 | <TR> |
| 137 | <TD>jobs.cgi</TD> |
| 138 | <TD>93k</TD> |
| 139 | <TD>Size of job objects</TD> |
| 140 | <TD>None</TD> |
| 141 | <TD>Medium</TD> |
| 142 | </TR> |
| 143 | <TR> |
| 144 | <TD>printers.cgi</TD> |
| 145 | <TD>95k</TD> |
| 146 | <TD>Size of printer objects</TD> |
| 147 | <TD>None</TD> |
| 148 | <TD>Medium</TD> |
| 149 | </TR> |
| 150 | <TR> |
| 151 | <TH COLSPAN="3">Command-Line Programs</TH> |
| 152 | </TR> |
| 153 | <TR> |
| 154 | <TH>Program</TH> |
| 155 | <TH>Base Memory</TH> |
| 156 | <TH>Max Memory</TH> |
| 157 | <TH>Temp Files</TH> |
| 158 | <TH>CPU Usage</TH> |
| 159 | </TR> |
| 160 | <TR> |
| 161 | <TD>accept</TD> |
| 162 | <TD>88k</TD> |
| 163 | <TD>128k</TD> |
| 164 | <TD>None</TD> |
| 165 | <TD>Low</TD> |
| 166 | </TR> |
| 167 | <TR> |
| 168 | <TD>cancel</TD> |
| 169 | <TD>88k</TD> |
| 170 | <TD>128k</TD> |
| 171 | <TD>None</TD> |
| 172 | <TD>Low</TD> |
| 173 | </TR> |
| 174 | <TR> |
| 175 | <TD>disable</TD> |
| 176 | <TD>88k</TD> |
| 177 | <TD>128k</TD> |
| 178 | <TD>None</TD> |
| 179 | <TD>Low</TD> |
| 180 | </TR> |
| 181 | <TR> |
| 182 | <TD>enable</TD> |
| 183 | <TD>88k</TD> |
| 184 | <TD>128k</TD> |
| 185 | <TD>None</TD> |
| 186 | <TD>Low</TD> |
| 187 | </TR> |
| 188 | <TR> |
| 189 | <TD>lp</TD> |
| 190 | <TD>90k</TD> |
| 191 | <TD>256k</TD> |
| 192 | <TD>None</TD> |
| 193 | <TD>Low</TD> |
| 194 | </TR> |
| 195 | <TR> |
| 196 | <TD>lpadmin</TD> |
| 197 | <TD>148k</TD> |
| 198 | <TD>256k</TD> |
| 199 | <TD>None</TD> |
| 200 | <TD>Low</TD> |
| 201 | </TR> |
| 202 | <TR> |
| 203 | <TD>lpc</TD> |
| 204 | <TD>86k</TD> |
| 205 | <TD>Size of job and printer objects</TD> |
| 206 | <TD>None</TD> |
| 207 | <TD>Medium</TD> |
| 208 | </TR> |
| 209 | <TR> |
| 210 | <TD>lpinfo</TD> |
| 211 | <TD>89k</TD> |
| 212 | <TD>Size of device and PPD objects</TD> |
| 213 | <TD>None</TD> |
| 214 | <TD>Medium</TD> |
| 215 | </TR> |
| 216 | <TR> |
| 217 | <TD>lpmove</TD> |
| 218 | <TD>88k</TD> |
| 219 | <TD>128k</TD> |
| 220 | <TD>None</TD> |
| 221 | <TD>Low</TD> |
| 222 | </TR> |
| 223 | <TR> |
| 224 | <TD>lpoptions</TD> |
| 225 | <TD>89k</TD> |
| 226 | <TD>128k</TD> |
| 227 | <TD>None</TD> |
| 228 | <TD>Low</TD> |
| 229 | </TR> |
| 230 | <TR> |
| 231 | <TD>lppasswd</TD> |
| 232 | <TD>90k</TD> |
| 233 | <TD>90k</TD> |
| 234 | <TD>None</TD> |
| 235 | <TD>Low</TD> |
| 236 | </TR> |
| 237 | <TR> |
| 238 | <TD>lpq</TD> |
| 239 | <TD>87k</TD> |
| 240 | <TD>Size of job objects</TD> |
| 241 | <TD>None</TD> |
| 242 | <TD>Medium</TD> |
| 243 | </TR> |
| 244 | <TR> |
| 245 | <TD>lpr</TD> |
| 246 | <TD>87k</TD> |
| 247 | <TD>256k</TD> |
| 248 | <TD>None</TD> |
| 249 | <TD>Low</TD> |
| 250 | </TR> |
| 251 | <TR> |
| 252 | <TD>lprm</TD> |
| 253 | <TD>84k</TD> |
| 254 | <TD>128k</TD> |
| 255 | <TD>None</TD> |
| 256 | <TD>Low</TD> |
| 257 | </TR> |
| 258 | <TR> |
| 259 | <TD>lpstat</TD> |
| 260 | <TD>119k</TD> |
| 261 | <TD>Size of job, printer, and class objects</TD> |
| 262 | <TD>None</TD> |
| 263 | <TD>Medium</TD> |
| 264 | </TR> |
| 265 | <TR> |
| 266 | <TD>reject</TD> |
| 267 | <TD>88k</TD> |
| 268 | <TD>128k</TD> |
| 269 | <TD>None</TD> |
| 270 | <TD>Low</TD> |
| 271 | </TR> |
| 272 | <TR> |
| 273 | <TH COLSPAN="3">Daemons</TH> |
| 274 | </TR> |
| 275 | <TR> |
| 276 | <TH>Program</TH> |
| 277 | <TH>Base Memory</TH> |
| 278 | <TH>Max Memory</TH> |
| 279 | <TH>Temp Files</TH> |
| 280 | <TH>CPU Usage</TH> |
| 281 | </TR> |
| 282 | <TR> |
| 283 | <TD>cups-lpd</TD> |
| 284 | <TD>92k</TD> |
| 285 | <TD>256k</TD> |
| 286 | <TD>One file per control or data file from client</TD> |
| 287 | <TD>Low</TD> |
| 288 | </TR> |
| 289 | <TR> |
| 290 | <TD>cupsd</TD> |
| 291 | <TD>308k</TD> |
| 292 | <TD>See Scheduler Requirements</TD> |
| 293 | <TD>See Scheduler Requirements</TD> |
| 294 | <TD>Medium</TD> |
| 295 | </TR> |
| 296 | <TR> |
| 297 | <TD>cups-polld</TD> |
| 298 | <TD>84k</TD> |
| 299 | <TD>Size of printer and class objects</TD> |
| 300 | <TD>None</TD> |
| 301 | <TD>Low</TD> |
| 302 | </TR> |
| 303 | <TR> |
| 304 | <TH COLSPAN="3">Filters</TH> |
| 305 | </TR> |
| 306 | <TR> |
| 307 | <TH>Program</TH> |
| 308 | <TH>Base Memory</TH> |
| 309 | <TH>Max Memory</TH> |
| 310 | <TH>Temp Files</TH> |
| 311 | <TH>CPU Usage</TH> |
| 312 | </TR> |
| 313 | <TR> |
| 314 | <TD>hpgltops</TD> |
| 315 | <TD>263k</TD> |
| 316 | <TD>320k</TD> |
| 317 | <TD>None</TD> |
| 318 | <TD>Medium</TD> |
| 319 | </TR> |
| 320 | <TR> |
| 321 | <TD>imagetops</TD> |
| 322 | <TD>628k</TD> |
| 323 | <TD>10M</TD> |
| 324 | <TD>Swap file for uncompressed image data</TD> |
| 325 | <TD>Medium</TD> |
| 326 | </TR> |
| 327 | <TR> |
| 328 | <TD>imagetoraster</TD> |
| 329 | <TD>652k</TD> |
| 330 | <TD>10M</TD> |
| 331 | <TD>Swap file for uncompressed image data</TD> |
| 332 | <TD>High</TD> |
| 333 | </TR> |
| 334 | <TR> |
| 335 | <TD>pstops</TD> |
| 336 | <TD>775k</TD> |
| 337 | <TD>840k</TD> |
| 338 | <TD>Up to size of print file</TD> |
| 339 | <TD>Medium</TD> |
| 340 | </TR> |
| 341 | <TR> |
| 342 | <TD>pstoraster</TD> |
| 343 | <TD>4M</TD> |
| 344 | <TD>14M</TD> |
| 345 | <TD>Swap file for command lists</TD> |
| 346 | <TD>High</TD> |
| 347 | </TR> |
| 348 | <TR> |
| 349 | <TD>rastertoepson</TD> |
| 350 | <TD>693k</TD> |
| 351 | <TD>1M</TD> |
| 352 | <TD>None</TD> |
| 353 | <TD>Low</TD> |
| 354 | </TR> |
| 355 | <TR> |
| 356 | <TD>rastertohp</TD> |
| 357 | <TD>690k</TD> |
| 358 | <TD>1M</TD> |
| 359 | <TD>None</TD> |
| 360 | <TD>Low</TD> |
| 361 | </TR> |
| 362 | <TR> |
| 363 | <TD>texttops</TD> |
| 364 | <TD>638k</TD> |
| 365 | <TD>4*cols*rows</TD> |
| 366 | <TD>None</TD> |
| 367 | <TD>Low</TD> |
| 368 | </TR> |
| 369 | </TABLE></CENTER> |
| 370 | |
| 371 | |
| 372 | <H1>Scheduler Objects</H1> |
| 373 | |
| 374 | <P>The <CODE>cupsd</CODE> program is the CUPS scheduler process. It manages |
| 375 | many interdependent server objects that are used to manage and print files |
| 376 | to printers. |
| 377 | |
| 378 | <P>The following table provides the memory and disk cost associated with each |
| 379 | server object. |
| 380 | |
| 381 | <CENTER><TABLE WIDTH="80%" BORDER="1"> |
| 382 | <TR> |
| 383 | <TH>Object</TH> |
| 384 | <TH>Memory Per</TH> |
| 385 | <TH>Disk Per</TH> |
| 386 | </TR> |
| 387 | <TR> |
| 388 | <TD>Browse ACL</TD> |
| 389 | <TD>1k</TD> |
| 390 | <TD>120</TD> |
| 391 | </TR> |
| 392 | <TR> |
| 393 | <TD>Browse Poll</TD> |
| 394 | <TD>24</TD> |
| 395 | <TD>80</TD> |
| 396 | </TR> |
| 397 | <TR> |
| 398 | <TD>Browse Relay</TD> |
| 399 | <TD>28</TD> |
| 400 | <TD>80</TD> |
| 401 | </TR> |
| 402 | <TR> |
| 403 | <TD>Certificate</TD> |
| 404 | <TD>76</TD> |
| 405 | <TD>32</TD> |
| 406 | </TR> |
| 407 | <TR> |
| 408 | <TD>Class</TD> |
| 409 | <TD>9k</TD> |
| 410 | <TD>200</TD> |
| 411 | </TR> |
| 412 | <TR> |
| 413 | <TD>Client</TD> |
| 414 | <TD>13k</TD> |
| 415 | <TD>-</TD> |
| 416 | </TR> |
| 417 | <TR> |
| 418 | <TD>Device</TD> |
| 419 | <TD>256</TD> |
| 420 | <TD>-</TD> |
| 421 | </TR> |
| 422 | <TR> |
| 423 | <TD>Job</TD> |
| 424 | <TD>2k</TD> |
| 425 | <TD>1k + size of document files</TD> |
| 426 | </TR> |
| 427 | <TR> |
| 428 | <TD>Location ACL</TD> |
| 429 | <TD>1k</TD> |
| 430 | <TD>120</TD> |
| 431 | </TR> |
| 432 | <TR> |
| 433 | <TD>MIME Filter</TD> |
| 434 | <TD>268</TD> |
| 435 | <TD>80</TD> |
| 436 | </TR> |
| 437 | <TR> |
| 438 | <TD>MIME Type</TD> |
| 439 | <TD>340</TD> |
| 440 | <TD>80</TD> |
| 441 | </TR> |
| 442 | <TR> |
| 443 | <TD>PPD</TD> |
| 444 | <TD>200</TD> |
| 445 | <TD>656</TD> |
| 446 | </TR> |
| 447 | <TR> |
| 448 | <TD>Printer</TD> |
| 449 | <TD>11k</TD> |
| 450 | <TD>32k</TD> |
| 451 | </TR> |
| 452 | </TABLE></CENTER> |
| 453 | |
| 454 | <EMBED SRC="glossary.shtml"> |
| 455 | |
| 456 | </BODY> |
| 457 | </HTML> |
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