[cups.general] Spool scanning intervall

Michael R Sweet msweet at apple.com
Fri May 30 09:19:24 PDT 2008

Bertram Scharpf wrote:
> Hi,
> sorry, but this is becoming a serious problem for me.
>> after an upgrade to CUPS 1.3.7 (Gentoo), on a large amount of
>> print jobs, the printer pauses after every three pages.
>> I detected that the backend for each job gets started
>> every 5 seconds:
>> # grep Started /var/log/cups/error_log
>> I [27/May/2008:18:25:10 +0200] [Job 51243] Started backend ...
>> I [27/May/2008:18:25:15 +0200] [Job 51244] Started backend ...
>> I [27/May/2008:18:25:20 +0200] [Job 51245] Started backend ...
>> I [27/May/2008:18:25:25 +0200] [Job 51246] Started backend ...
>> ...
>> I cannot find the configuration parameter where this interval
>> could be shortened. Could anyone give me a hint?
> Maybe I am looking at the wrong place. A fact is, anyway, that
> the jobs get started every 5 seconds, not matter how many of them
> wait in the queue. I want them to be started as soon as the printer
> is ready.

CUPS tries to start another job as soon as the backend exits.  If the
backend needs 5 seconds to see that the printer has finished a job,
there isn't much you can do about it...

Michael R Sweet                        Senior Printing System Engineer

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