*BSD News Article 73192


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: HP4020i (CD-R) Usage question (dd input/output error?)
Date: 8 Jul 1996 22:42:07 GMT
Organization: Private BSD site, Dresden
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nsayer@quack.kfu.com (Nick Sayer) wrote:

> I also think it's a good idea to add the rtprio to the dd in the
> pipeline above. Like this:
> 
> 
> rtprio 5 team -v 1m < IMAGE | rtprio 5 dd of=/dev/rworm0 obs=20k
> 
> What's the point of elevating the team if the dd doesn't also get
> elevated?

Interesting.  This was my intention, but i never noticed that the
shell would end the `rtprio' command at the pipe operator. ;-)

Anyway, it seems that the rtprio is more religious on my side, while
the usage of team(1) is indeed what makes it safe to burn CD's while
running full multi-user.  Its user-level multi-megabyte cache does a
good job in prefetching data off the disk.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)