This software performance specification provides an analysis of the memory, disk, and processor utilitization of each program in the Common UNIX Printing System ("CUPS") Version 1.1.
For the purposes of comparison, all figures are for the Linux Intel platform. Memory utilization on other platforms should be similar. Document Overview This software performance specification is organized into the following sections: 1 - Scope 2 - References 3 - Programs 4 - Scheduler Objects A - Glossary Programs The following table describes the average memory, disk, and CPU usage of each program in CUPS. The base memory column shows the initial memory requirements for each program, including any shared libraries that are provided by CUPS. The max memory column shows the maximum amount of memory that will be used by the program based upon the default configuration settings supplied with CUPS. The temp files column indicates whether any temporary files are created. The CPU usage column specifies a relative CPU usage by the program under normal conditions, either low, medium, or high. Low usage indicates that the program will never use more than 33% of the available CPU time. Medium usage indicates the program will use as much as 66% of the available CPU time. High usage indicates the program uses 66% or more of the available CPU time. Backends Program Base Memory Max Memory Temp Files CPU Usage ipp 91k 256k Up to size of print file Low lpd 89k 89k Up to size of print file Low parallel 85k 85k Up to size of print file Low serial 85k 85k Up to size of print file Low socket 85k 85k Up to size of print file Low usb 85k 85k Up to size of print file Low CGIs Program Base Memory Max Memory Temp Files CPU Usage admin.cgi 107k 256k Up to size of PPD file Medium classes.cgi 95k Size of class objects None Medium jobs.cgi 93k Size of job objects None Medium printers.cgi 95k Size of printer objects None Medium Command-Line Programs Program Base Memory Max Memory Temp Files CPU Usage accept 88k 128k None Low cancel 88k 128k None Low disable 88k 128k None Low enable 88k 128k None Low lp 90k 256k None Low lpadmin 148k 256k None Low lpc 86k Size of job and printer objects None Medium lpinfo 89k Size of device and PPD objects None Medium lpmove 88k 128k None Low lpoptions 89k 128k None Low lppasswd 90k 90k None Low lpq 87k Size of job objects None Medium lpr 87k 256k None Low lprm 84k 128k None Low lpstat 119k Size of job, printer, and class objects None Medium reject 88k 128k None Low Daemons Program Base Memory Max Memory Temp Files CPU Usage cups-lpd 92k 256k One file per control or data file from client Low cupsd 308k See Scheduler Requirements See Scheduler Requirements Medium cups-polld 84k Size of printer and class objects None Low Filters Program Base Memory Max Memory Temp Files CPU Usage hpgltops 263k 320k None Medium imagetops 628k 10M Swap file for uncompressed image data Medium imagetoraster 652k 10M Swap file for uncompressed image data High pstops 775k 840k Up to size of print file Medium pstoraster 4M 14M Swap file for command lists High rastertoepson 693k 1M None Low rastertohp 690k 1M None Low texttops 638k 4*cols*rows None Low Scheduler Objects The cupsd program is the CUPS scheduler process. It manages many interdependent server objects that are used to manage and print files to printers. The following table provides the memory and disk cost associated with each server object. Object Memory Per Disk Per Browse ACL 1k 120 Browse Poll 24 80 Browse Relay 28 80 Certificate 76 32 Class 9k 200 Client 13k - Device 256 - Job 2k 1k + size of document files Location ACL 1k 120 MIME Filter 268 80 MIME Type 340 80 PPD 200 656 Printer 11k 32k
This software performance specification is organized into the following sections:
The following table describes the average memory, disk, and CPU usage of each program in CUPS.
The base memory column shows the initial memory requirements for each program, including any shared libraries that are provided by CUPS.
The max memory column shows the maximum amount of memory that will be used by the program based upon the default configuration settings supplied with CUPS.
The temp files column indicates whether any temporary files are created.
The CPU usage column specifies a relative CPU usage by the program under normal conditions, either low, medium, or high. Low usage indicates that the program will never use more than 33% of the available CPU time. Medium usage indicates the program will use as much as 66% of the available CPU time. High usage indicates the program uses 66% or more of the available CPU time.
The cupsd program is the CUPS scheduler process. It manages many interdependent server objects that are used to manage and print files to printers.
cupsd
The following table provides the memory and disk cost associated with each server object.