Bug 249213

Summary:	Takes several hours to print a single US Letter page with cups-1.2.12
Product:	[Fedora] Fedora	Reporter:	Daniel Berrangé <berrange>
Component:	cups	Assignee:	Tim Waugh <twaugh>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	6
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	1.2.12-2.fc7	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-07-30 09:31:22 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	207681

Description Daniel Berrangé 2007-07-22 19:08:30 UTC

Description of problem:
After the recent update to cups-1.2.12, a regular US Letter photo quality print
on my Canon ip6700d takes many hours to complete, instead of the previous 30-60
seconds.  


Version-Release number of selected component (if applicable):
cups-1.2.12-1.fc6
cnijfilter-common-2.60-1
cnijfilter-ip6600d-2.60-1

How reproducible:
Always

Steps to Reproduce:
1. Insert a single sheet of paper
2. Queue a print job
3.
  
Actual results:
Prints one row of image every 10 seconds, complete job takes many hours

Expected results:
Job finished in < 1 minute

Additional info:
The cnijfilter-* RPMs are the Canon supplied prorietry addons. I do not believe
these are the problem though because they merely do the data conversion - the
sending of data to the USB device is still being done by regular CUPs.

I straced the  /usr/lib/cups/backend/usb process that is sending data to the
device and after every single write() it gets EAGAIN, and then does a 1 second
sleep. So its only sending 8192 bytes of data each second, explaining why it
takes many hours to send the 40 MB print job.

I looked at the source for the USB backend at it looks like the 'sleep(1)' was
introduced by a custom Fedora patch ontop of regular upstream

cups-usb-paperout.patch

Removing this patch & re-building the cups RPM solved the problems & printing is
now fast again.

Comment 1 Fedora Update System 2007-07-23 15:45:08 UTC

cups-1.2.12-2.fc7 has been pushed to the Fedora 7 testing repository.  If problems still persist, please make note of it in this bug report.

Comment 2 Tim Waugh 2007-07-30 09:31:22 UTC

Have you tried 1.2.12-2.fc7?  Does it fix the problem for you?

(To upgrade to it, use:
  yum --enablerepo=updates-testing update 'cups*'
 and say 'y' when prompted.)

Comment 3 Daniel Berrangé 2007-07-30 11:28:27 UTC

I've not tested FC7 rpms because I reported this against FC6 which is the OS on
the machine I print from. That said it appears there's now a cups update for FC6
too so I'll give that a try.

Comment 4 Daniel Berrangé 2007-08-04 15:24:28 UTC

Confirmed that the cups-1.2.12-2.fc6 build has resolved the problems

Comment 5 Fedora Update System 2007-08-10 22:22:48 UTC

cups-1.2.12-4.fc7 has been pushed to the Fedora 7 stable repository.  If problems still persist, please make note of it in this bug report.