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ef416fc2 | 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> |