On Fri, 5 Mar 2004, William C Beegle wrote: > On Tue, 10 Feb 2004, Ashley GC wrote: > > The problem I have is that synchronous printing and page > > counting causes a 17 second delay between jobs, due to the time taken > > between end of spooling and the first page coming out, which is due to > > the long paper path of our HP LaserJet 8150. [snip] > I'm hoping to talk to our HP technical rep. to find a way to keep the > printers active and rolling for 30 seconds after each job. I'm hoping
It took a while (my fault, not HP's), but I finally talked to one of the HP printer specialists about the problem. The issue is the long pipeline that's involved with printing that looks something like this: spooler->network->printer buffer->renderer->page buffer->print When we use SNMP page counting (as with ifhp), the pipeline clears out between jobs (that is, it does if you want accurate page counts), and it takes approximately 18 seconds to fill it again. It's possible to shave a few seconds on the transfer and rendering stages, but for safety and energy management reasons, the "print" part of the pipeline doesn't fire up until a page (or two for duplex) is ready to print. That phisical mechanism is reponsible for most of the delay. Which is to say that the only way to avoid delays with HP printers is to keep the buffers full. There's no magic "keep rolling" command. -willie ----------------------------------------------------------------------------- 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. -----------------------------------------------------------------------------
