Date: Sat, 20 Sep 2003 15:51:19 +0100 From: ian j hart <ianjhart@ntlworld.com> To: Kirk Strauser <kirk@strauser.com> Cc: freebsd-stable@freebsd.org Subject: Re: HP Laserjet 1200 on USB Message-ID: <200309201551.19467.ianjhart@ntlworld.com> In-Reply-To: <87brtfmvj7.fsf@strauser.com> References: <87fzisoi53.fsf@strauser.com> <200309201340.02453.ianjhart@ntlworld.com> <87brtfmvj7.fsf@strauser.com>
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On Saturday 20 September 2003 2:36 pm, Kirk Strauser wrote: > At 2003-09-20T12:40:02Z, ian j hart <ianjhart@ntlworld.com> writes: > > 2) > > What makes you think USB will be faster? The bottleneck is almost > > certainly the print engine. esp. in graphics mode. > > It currently takes about 5 minutes to transfer a 20MB file to my printer > which has 64MB of memory. So you have extra RAM then. > Printing starts within 5-10 seconds of the upload being completed. Q. How much of the 5 mins is data transfer, and how much is "printer busy"= =20 (rendering)? A. Nobody knows :) Only when USB works will we know. We could test under Windows I suppose** > If the parallel port is in interrupt mode, CPU is > pegged to 100% the whole time. In polled mode, CPU usage drops, but the > printing time doesn't decrease (and the ``parallel'' process is running t= he > whole time). That's what made me think that the parallel port is probably > the bottleneck. Perhaps IEEE1284 support needs "tweaking". What's your data? One 20Mb graphic is different to a 20Mb "text" document. As a point of reference here is what we have. Win95 clients with PS driver -> K6II500 servers running samba + cups -> sto= ck=20 1200's (ie. 8Mb) A page of text takes about a minute, graphics about 3. MS Word will let you= =20 add a border made up of replicated images. A large graphic plus a border ca= n=20 take 20 mins+. Now this could easily be the client software/driver, but public opinion see= ms=20 to be that these printers are slow on graphics. **again Just my 2c. =2D-=20 ian j hart Quoth the raven, bite me! Salem Saberhagen (Episode LXXXI: The Phantom Menace) **Personally I don't care. It's a "real" PS and text printer for ~=A3200. I= work=20 at a school, cost is a primary consideration.
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