Date: Fri, 21 Jun 2002 08:53:34 -0500 From: D J Hawkey Jr <hawkeyd@visi.com> To: stable at FreeBSD <freebsd-stable@freebsd.org> Subject: Another Q about hw.ata.atapi_dma Message-ID: <20020621085334.A1165@sheol.localdomain>
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Hi.
OK, so I boot, hit the spacebar, and enter 'set hw.ata.atapi_dma="1"',
and 'boot'. The sysctl setting takes:
[sheol] ~$ sysctl -a |grep dma
hw.ata.ata_dma: 1
hw.ata.atapi_dma: 1
hw.atamodes: dma,---,pio,pio,
And/but dmesg still shows (correspondingly):
...
acd0: CD-RW <CR-4804TE> at ata1-master using PIO3
acd1: CDROM <LTN485S> at ata1-slave using PIO4
...
Does this mean the hardware doesn't support DMA, or am I looking at the
wrong thing to see that it is using DMA? The drives do function.
This is under FreeBSD 4.5-RELEASE-p4, BTW. I just want to see if I can
extract a little more speed out of the drives, but I'm also trying to
anticipate problems when I upgrade to FreeBSD 4.6.
Thanks,
Dave
--
______________________ ______________________
\__________________ \ D. J. HAWKEY JR. / __________________/
\________________/\ hawkeyd@visi.com /\________________/
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