[cups.general] how to allow only one job at a time (and queue everything else)?

[Tomasz Chmielewski]

I have a rather slow device that serves as a tiny domain controller and 
a print server (64 MB RAM, 266 MHz ARM CPU).

As printers used with this device don't support PostScript, CUPS have to 
filter everything through foomatic/ghostscript.

It works fine (read: slow, but bearable) if users schedule only one 
print job. If they schedule more jobs at the same time, this whole 
filtering through foomatic/ghostscript is so slow, that printing is very 
very slow, users print the documents once again, which slows the things 
down even more etc.
This is because running multiple foomatic/ghostscript filters on this 
small device at the same time is painfully slow.


Is there a way to configure CUPS so that it runs only one filter job at 
any given time? And, if there is a second print job, just queue it, and 
wait till the filter for the first print job is done?


I understand there is a "MaxJobs number" directive, but I'm not sure if 
it will reject any further jobs, or just queue them - I wouldn't like to 
test it on my users ;)


-- 
Tomasz Chmielewski
http://blog.wpkg.org