[cups.bugs] delay in raw print after upgrade 1.3.10 -> 1.4.6

[Jiri Popelka]

On 02/28/2011 03:53 PM, Helge Blischke wrote:
> Franta Hanzlik wrote:
>
>> We have two serial-line cash text printers and one PCL USB printer, on
>> which are printing from DOS application running on Linux under DOSEMU. All
>> printers are in CUPS configured as "raw queue". When we run on old (Fedora
>> 9/i386 w. cups-1.3.10) configuration, data to all printers was sent almost
>> immediately (within cca 1 sec serial printers start print). Now after
>> upgrade to newer distro (Fedora 14/i386 w. cups-1.4.6), we noticed
>> significant (about further 5-6 second) delay until printing start. Please,
>> is there any option which can solve this issue? Or, can someone recommend
>> any method for debugging this problem?
>>
>> I tried find some info, maybe http://www.cups.org/str.php?L3744 or
>> http://www.cups.org/str.php?L3495 reports can relate with, but not sure.
>> Any suggestion for this bug?
> I'd suggest to adapt the patch by Mike from the
> http://www.cups.org/str.php?L3495
> report to your cups-1.4.6. But note that doing so requires to rebuild
> cups-1.4.6 from the sources and replacing only the respective backends (not
> installing the complete rebuild system).
>
> Helge
AFAICT the mentioned patch has been included in cups
since 1.4.4 (http://www.cups.org/articles.php?L596)
so there must be some other problem.

Jiri