Red Hat Bugzilla – Bug 428086
CUPS performance regression
Last modified: 2009-08-18 09:39:22 EDT
In RHEL 4 we'd added a custom feature to aid printing performance in relation to
fetching a list of queues from a remote server and validating the queue once
Customer is reporting that RHEL 5 printing performance had dropped relative to
the current RHEL 4 version.
Customer only uses lp (not lpr) for job submission and always specifies a
destination. Cups host is usually set through the CUPS_SERVER environment
variable, but sometimes (10%) passed with the -h option on the command line.
Targeted print threshold time is about 700ms (current using a custom built cups
lp binary on a RHEL 2.1 system), current performance on RHEL 5.1 is about 2
seconds. With 100k print jobs a day,
This bugzilla has Keywords: Regression.
Since no regressions are allowed between releases,
it is also being proposed as a blocker for this release.
Please resolve ASAP.
The solution will be to use the same method as cups-lpd to submit jobs when the
destination is known.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.