Bug 213021

Summary:	parallel backend uses lots of CPU
Product:	[Fedora] Fedora	Reporter:	Tim Waugh <twaugh>
Component:	cups	Assignee:	Tim Waugh <twaugh>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	1.2.5-2.fc6.8	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-11-07 22:29:45 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, 213023

Description Tim Waugh 2006-10-30 16:31:49 UTC

Description of problem:
See upstream bug report:
  http://cups.org/str.php?L2056

cups-1.2.4-9

The parallel backend opens the device node with O_WRONLY, but then calls
backendRunLoop with use_bc=1, causing it to try reading from the file
descriptor.  Of course this fails, but unfortunately it can produce busy-looping
when the printer is off or busy.

Comment 1 Fedora Update System 2006-11-07 22:25:23 UTC

Fixed in update: cups-1.2.5-2.fc6.8