kern/78711: Parallel printer incredibly slow

Poul-Henning Kamp phk at phk.freebsd.dk
Sat Mar 12 07:17:03 PST 2005


In message <200503121510.j2CFA5Dm015348 at freefall.freebsd.org>, Suporte Matik wr
ites:

> I increased it in 500er steps to 2500 (500 was default) and nothing=20
> changed in printing speed but the stray irq7 events do not appear=20
> anymore.=20

set it to a million.  Parallel ports interrupt per every character
(until somebody implements DMA he said knowingly, nudge nudge, wink wink!)


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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