It is the same problem we and quite a few other people are having. If you have the HP 8150 printers there is a new firmware upgrade for them that might solve the problem. Otherwise I really don't know what to tell you.
On Fri, 12 Mar 2004, Toby Blake wrote: > Hmmm, going back to this problem we see when print queues get large > and the print server load is extremely high, can anyone explain why > this happens (for technical info see previous messages in this thread > - I won't repost it all here). > > We run student labs and times like today, where assignments are due > in, result in printers running extremely slowly, but the delay is > between the jobs (i.e. the printer is doing nothing between each > printed job, the delay is at the server side) and is definitely > related to the size of the queue, e.g. > > [kant]toby: lpq -s -Pat3 > [EMAIL PROTECTED] 49 jobs > [kant]toby: lpq -s -Pat8 > [EMAIL PROTECTED] 36 jobs > [kant]toby: > > [dickinson]lp: uptime > 4:03pm up 119 days, 22:49, 1 user, load average: 9.64, 9.18, 7.20 > > The delay between jobs right now, with this load and these queues is > 14 minutes. This delay occurs here: > > finished '[EMAIL PROTECTED]', status 'JSUCC' at 2004-03-12-15:42:49.171 ## [EMAIL > PROTECTED] number=712 process=16602 > waiting for subserver to exit at 2004-03-12-15:56:16.463 ## A=<NULL> number=0 > process=14349 > subserver pid 16602 exit status 'JSUCC' at 2004-03-12-15:56:16.463 ## A=<NULL> > number=0 process=14349 > > .... so after the job has successfully printed, it waits for an lpd > process to exit, which takes 14 minutes. > > What are the lpd processes doing in the time that chews up so much CPU > - this is very much related to the size of the queue - if I removed > half the jobs in the queue, the delay between jobs would significantly > decrease (I know this because I've tried it). > > Note that our print servers are currently running RH7.1 - I'll be > upgrading them to RH9 soon, although I'm not sure this will have any > effect. They're running either LPRng 3.8.10 or 3.8.21 - this happens > with both. > > I'd appreciate any help or advice as to what we can do to stop this > happening - note again that it only happens when there are a lot of > print jobs in the queue, so 99.9% of the time we have no problems > whatsoever - I have watched the load increase and the delay between > jobs increase as more are added to the queue. > > Many thanks in advance > Toby Blake > University of Edinburgh > > > ----------------------------------------------------------------------------- > 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. > ----------------------------------------------------------------------------- > ----------------------------------------------------------------------------- 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. -----------------------------------------------------------------------------
