Date: Wed, 19 Feb 1997 19:31:58 -0800 (PST) From: Doug White <dwhite@gdi.uoregon.edu> To: Jay Sachs <sachs@interactive.net> Cc: questions@freebsd.org Subject: Re: printing -> jerkiness in response in X Message-ID: <Pine.BSI.3.94.970219193105.13952M-100000@localhost> In-Reply-To: <87vi7ojxvj.fsf@luddite.org>
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On 19 Feb 1997, Jay Sachs wrote: > > This is on 2.1.6R, and XF32. Whenever a job is being sent to the > printer, the mouse & keyboard display very noticeable hesitations in > responding. Key events don't get lost, though mouse clicks > occasionally do. > > lpd is running. It's a custom kernel, and the lp line is > > device lpt0 at isa? port? tty irq 7 vector lptintr > > which is straight from LINT. Any ideas? Try setting this port to polled mode by removing the irq item and/or using lptcontrol. The port is generating interrupts, which forces the system to stop whatever it's doing and send data out. Polled mode lets the system queue things up and works better for the scheduler. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major
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