cupsd consuming 15% of a CPU on client
scott
gssmallie at yahoo.com
Wed Aug 24 08:09:20 PDT 2005
Below is an abbreviated ps command, configuration information and some CPU usage calculations. I am concerned from these calculations that my CPU usage on the client is too high.
Less than 10 jobs are printed on each host per day. (less 100 total for the entire system). About 500 print queues are configured in the system. The cupsd (client mode) is consuming about 10% to 15% of one CPU on each host.
Please review the data and advise if my configuration is correct and if my concerns warranted.
HOSTNAME CPU MEM VSIZE RSS PRI START TIME COMMAND
host01 0.0 0.0 2088 2076 20 Aug 08 2:45 cups-polld
host01 0.0 0.0 2088 2092 20 Aug 08 2:44 cups-polld
host01 0.0 0.0 9468 9392 20 Aug 08 3589:39 cupsd
host02 0.0 0.0 2060 2064 20 Aug 02 3:53 cups-polld
host02 0.0 0.0 2060 2064 20 Aug 02 3:54 cups-polld
host02 0.0 0.0 9664 9772 20 Aug 02 4716:44 cupsd
host03 0.0 0.0 2064 2080 20 Aug 02 2:10 cups-polld
host03 0.0 0.0 2064 2080 20 Aug 02 2:21 cups-polld
host03 0.0 0.0 9676 9820 20 Aug 02 4377:29 cupsd
host04 0.0 0.0 2056 1684 20 Aug 02 0:29 cups-polld
host04 0.0 0.0 2056 1684 20 Aug 02 0:30 cups-polld
host04 0.0 0.0 9528 6128 20 Aug 02 3874:55 cupsd
host05 0.0 0.0 2068 2084 20 01:56:47 0:02 cups-polld
host05 0.0 0.0 2068 2084 20 01:56:47 0:03 cups-polld
host05 0.0 0.0 9000 9144 20 01:56:32 42:56 cupsd
host06 0.0 0.0 2064 2080 20 Aug 02 2:33 cups-polld
host06 0.0 0.0 2064 2080 20 Aug 02 2:46 cups-polld
host06 0.0 0.0 9520 9664 20 Aug 02 4401:52 cupsd
host07 0.0 0.0 2088 2104 20 Aug 02 3:24 cups-polld
host07 0.0 0.0 2088 2104 20 Aug 02 3:25 cups-polld
host07 0.0 0.0 9440 9584 20 Aug 02 4387:24 cupsd
host08 0.0 0.0 2068 2084 20 Aug 02 2:14 cups-polld
host08 0.0 0.0 2068 2084 20 Aug 02 2:24 cups-polld
host08 0.0 0.0 9460 9604 20 Aug 02 4326:59 cupsd
host09 0.0 0.0 2068 1692 20 Aug 02 2:56 cups-polld
host09 0.0 0.0 2068 1704 20 Aug 02 2:34 cups-polld
host09 0.0 0.0 10048 6772 20 Aug 02 4342:16 cupsd
host10 0.0 0.0 2068 2084 20 Aug 02 3:12 cups-polld
host10 0.0 0.0 2068 2084 20 Aug 02 3:17 cups-polld
host10 20.9 0.0 9428 9572 20 Aug 02 5369:15 cupsd
server00 0.0 0.0 17684 10792 0 Aug 03 225:40 cupsd -c cups.conf
server01 0.0 0.1 15744 8672 0 Aug 18 45:51 cupsd -c cups.conf
hostXX machines are Power4 machines with 4 CPUS each running at 450Mhz.
serverXX machines are Xeon 2.7GHz with 4 and 2 CPUs respectively
Calculation Examples
=====================
% bc -l
24*60*22 *Minutes since cups was started
31680
3589/31680*100
11.32891414141414141400 *Percent CPU used on host01
4716/31680*100
14.88636363636363636300 *Percent CPU used on host02
This CPU consumption seems high. From the ps information you ca
Server Configuration
===================
ServerName server01
AccessLog /var/log/cups/access_log
ErrorLog /var/log/cups/error_log
LogLevel info
PageLog /var/log/cups/page_log
Printcap /etc/opt/TWWfsw/cups1123/printcap
PrintcapFormat BSD
User lp
Group lp
RIPCache 512m
Port 631
MaxClients 1024
MaxClientsPerHost 1024
BrowseProtocols all
BrowseInterval 300
BrowseTimeout 14400
SystemGroup lp
<Location />
Order Deny,Allow
Deny From All
Allow From All
</Location>
<Location /jobs>
AuthType Basic
AuthClass Group
AuthGroupName lp
</Location>
<Location /admin>
AuthType Basic
AuthClass Group
AuthGroupName lp
</Location>
Host (client) Configuration
============================
PageLog /var/log/cups/page_log
Printcap /etc/opt/TWWfsw/cups1123/printcap
PrintcapFormat BSD
Port 631
KeepAliveTimeout 3600
Timeout 3600
Browsing On
BrowseProtocols all
BrowseInterval 900
BrowsePoll server01
BrowsePoll server02
BrowsePort 631
BrowseTimeout 21600
ImplicitClasses On
<Location />
Order Deny,Allow
Deny From All
Allow From 127.0.0.1
</Location>
Thank you for reading and replying.
-scotts
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