CUPS hangs on large job queue

[megalo]

When I want to print several files in a queue, cupsd will hang after a few jobs and not complete the rest. (I add the jobs at a rather quick pace, say, about 5 to 10 in one minute). My printer is an old Epson Stylus Color 880.
The only solution is to kill and restart cupsd; after that, CUPS will finish the queue.
Also, when I try to print a document after cupsd hangs (which I can't see), new jobs are not added to the queue, which really is the most annoying problem.
This is in Feisty. It did not occur in Edgy.

[megalo (alex-menger)]

Oops, I forgot to mention the distro: Feisty

[Mathias Gug (mathiaz)]

Can you have a look at the error_log on the computer running the cups daemon ?
Cups log files are located in /var/log/cups/. The error log is named error_log.

[megalo (alex-menger)]

A typical error in the error.log is:

---
E [26/Jun/2007:13:38:01 +0200] Unable to accept client connection - Too many open files.
E [26/Jun/2007:13:38:01 +0200] cupsdReadClient: Unable to write 32768 bytes to /var/spool/cups/00000005: Bad file descriptor
E [26/Jun/2007:13:38:07 +0200] Unable to create job status pipes - Too many open files.
E [26/Jun/2007:13:38:08 +0200] cupsdReadClient: Unable to write 32768 bytes to /var/spool/cups/00000006: Bad file descriptor
---

As I wrote, this happens when I quickly add a lot of jobs. However, those errors did not occur in Edgy, even though I did exactly the same thing.

Thanks!

[Paul Dufresne (paulduf)]

Marking as confirmed, since Megalo have given the requested information, and that's looks enough to me to figure out what is happening.

[Bil-E-daKid (heydonkey)]

I can confirm that I am also having this problem on a fully up to date feisty workstation at home.

I've just had to stop cupsys, clear /var/spool/cups and start cupsys about four times in the last ten minutes - and now it's dead again.

[Dan Moreton (dan-elections)]

I can confirm running Feisty and Network Printer. A single 21 page document printed cups crashed and piled errors into error log . . . . subsequent print jobs were queued but not printed until user rebooted.

From error_log:

E [27/Sep/2007:14:50:12 +1200] Unable to accept client connection - Too many open files.

zgrep Too\ many\ open\ files error_log.1.gz | wc -l
68138

From page_log:

BLANK BLANK 69 [27/Sep/2007:10:58:46 +1200] 1 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:26 +1200] 1 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:28 +1200] 2 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:29 +1200] 3 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:30 +1200] 4 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:31 +1200] 5 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:32 +1200] 6 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:33 +1200] 7 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:34 +1200] 8 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:34 +1200] 9 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:35 +1200] 10 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:36 +1200] 11 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:37 +1200] 12 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:38 +1200] 13 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:39 +1200] 14 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:40 +1200] 15 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:41 +1200] 16 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:42 +1200] 17 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:43 +1200] 18 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:44 +1200] 19 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:45 +1200] 20 1 - localhost
BLANK BLANK 70 [27/Sep/2007:14:49:46 +1200] 21 1 - localhost
BLANK BLANK 71 [27/Sep/2007:16:21:08 +1200] 1 1 - localhost

[Thomas Hotz (thotz-deactivatedaccount)]

Is this still an issue for you? Which Ubuntu version do you use? Thank you for telling us!

[Launchpad Janitor (janitor)]

[Expired for cupsys (Ubuntu) because there has been no activity for 60 days.]