Subject: Re: Heavy /dev/lpt use burdens system.
To: Aaron J. Grier <>
From: Rafal Boni <>
List: current-users
Date: 09/10/1999 13:58:01
In message <>, you write: 

-> On Fri, Sep 10, 1999 at 09:48:12AM +0200, Lennart Augustsson wrote:
-> > It seems that the printer driver causes an incredible number of interrupts
-> > per seconds, thousands of them.  Probably as many as your machine can
-> > handle.  You should try the interruptless driver, but what is really neede
-> d
-> > is for someone to fix the ltp driver, perhaps to use DMA.
-> that's funny, linux doesn't have this problem when using interrupt-
-> driven printing, and it doesn't use DMA.
-> <ducks>

Well, in that case, maybe we should steal their driver 8-)

I've used the interruptless version of the driver on my 5x86 box to print
stuff to my annoying PPA printer (an HP deskjet 712 that was paid for by
my fiancee's employer, so I complain not) without the system getting any 
slower than it already is (and believe me, that box is slow enough that
it would be hard not to notice..)

I've never used the interrupting one becuase of the horror stories I've 
heard about it rebooting x86 boxes and because I'm continually short of


Rafal Boni