On Fri, 28 Nov 2003 16:34:32 +0000 (GMT) Toby Blake <[EMAIL PROTECTED]> wrote:
> We're seeing a problem whereby a printer (in this example, an > HP8150DN, but other HP printers have also shown the same symptoms) > shows significant delays between the completion of one job printing > and the next one in the queue starting. > It seems like this problem is much worse when there are lots of jobs > in the queue - in the case today, when there were 50+ jobs in the > queue, the wait was between 4 and 5 - now that the queue is down to 18 > jobs, the wait is a little over a minute. Could this be the cause? I > haven't been able to verify this bit because I've only ever been > notified about it when there are a lot of jobs in the queue. > > Can anyone suggest any solutions or even things to try? I'm a bit > stumped as to what to do next. Check "lpq -L" between jobs and find out if ifhp or lpd is causing the delay. If you have a long waitend delay or high waitend repeat (number of times to keep polling the printer for pagecount or status until the response stablizes), you will see such delays. If ifhp is causing the delay, you many want to give some serious thought to changing your printcap to use an SNMP-based waitend rather than using HP's PJL implementation. If ifhp is clearly exiting but the queue still sits waiting, you have other problems to work with. Perhaps a shortage of file descriptors or similar system resource. You'd be best to strace/truss the main lpd process and watch for errors there, or enable some lpd debugging and see what you get. -- ============================================================================ John Perkins | University of Wisconsin-Madison Associate Researcher | Department of Computer Science [EMAIL PROTECTED] | 1210 W. Dayton St. 608-262-0438/608-262-6626 FAX | Madison, WI 53706-1685 ============================================================================ ----------------------------------------------------------------------------- YOU MUST BE A LIST MEMBER IN ORDER TO POST TO THE LPRNG MAILING LIST The address you post from MUST be your subscription address If you need help, send email to [EMAIL PROTECTED] (or lprng-requests or lprng-digest-requests) with the word 'help' in the body. For the impatient, to subscribe to a list with name LIST, send mail to [EMAIL PROTECTED] with: | example: subscribe LIST <mailaddr> | subscribe lprng-digest [EMAIL PROTECTED] unsubscribe LIST <mailaddr> | unsubscribe lprng [EMAIL PROTECTED] If you have major problems, send email to [EMAIL PROTECTED] with the word LPRNGLIST in the SUBJECT line. -----------------------------------------------------------------------------
