Bug 213021 - parallel backend uses lots of CPU
Summary: parallel backend uses lots of CPU
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: cups
Version: 6
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Tim Waugh
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: FC6Update 213023
TreeView+ depends on / blocked
 
Reported: 2006-10-30 16:31 UTC by Tim Waugh
Modified: 2007-11-30 22:11 UTC (History)
0 users

Fixed In Version: 1.2.5-2.fc6.8
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2006-11-07 22:29:45 UTC
Type: ---
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
CUPS Bugs and Features 2056 0 None None None Never

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
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