[cups.general] Solaris 10 SPARC, CUPS, high volume printing and "lp: unable to print file: server-error-service-unavailable"

[Michael Sweet]

Check the /var/log/cups/error_log file for information - my guess is that either cupsd is restarting (log rotation?) or you've hit the MaxClients[PerHost] limit temporarily. Both get logged...


On Jun 28, 2012, at 1:36 AM, Wilkinson, Hugo (IT Dept) wrote:

> Good morning/afternoon,
>  
> Im running Cups 1.4 (i know, i know!) on Solaris 10 SPARC ...  99.9% of the time it performs miraculously doing and behaving exactly as we want.
>  
> We dont use any filters or drivers, every job is just pure raw files, all through port 9100. The printers are setup with;
>  
> lpadmin -p <printer> -E -v socket://<printer-host>:9100
>  
> The jobs themselves are either pure ascii, control-coded ascii, or postscript (some generated from an Adobe Postscript driver, other's hand-written from scratch).
>  
> The 0.1% of the time it mis-behaves, is when we have a high volume in a very short amount of time (for example, 60 print jobs in a matter of seconds).
>  
> It appears that we can catch CUPS 'off-guard', like it's busy doing something else, and you throw a print job at it via "lp -d <printer>" and it comes back with: "lp: unable to print file: server-error-service-unavailable" ...
>  
> The very next print job, which might literally be milliseconds later, goes through fine.. and so you end up with 59 out of 60 pages printed.
>  
> There is no discernable pattern to these events apart from I believe it only happens during times of high-volume/density printing, and I think only with the Postscript jobs .. and *maybe* only those generated from Adobe PS print driver. Trying to replicate the problem is troublesome as usually it works.. But every so often, it just 'happens' ...
>  
> Any idea's?  I would upgrade CUPS, but I dont seem to be able to find another binary release for SPARC architecture except 1.4, and our machine doesnt have internet access to sign-up for Blastwave such services. Neither do we have the skill-set to easily build from the source :*(
>  
> Any tips or idea's is most appreciated.
>  
> Thanks
> Regards
> Hugo
>  
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________________________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair

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