FreeBSD, big hard drives and DMA
infofarmer at mail.ru
Thu Dec 16 01:35:24 PST 2004
I have a freebsd box with an (in)famous Abit BE6-II board. It has a
built-in HPT controller in addition to a general one (440BX chipset).
The HPT handles drives of any sizes, the general one handled anything up
to around 120Gb. I was amazed when I tried to put a 200Gb drive on the
common controller, set it to none in the BIOS and freebsd saw every
single byte of it. Should I praise Soren (forgive me for my spelling) or
anybody else :-)?
Anyways, when I tried to copy files from another 200Gb drive which was
on the HPT the speed was fairly high (15-17Mb), but kinda limited. I
looked at the CPU load - and it was around 65%. I'm a freebsd novice -
could somebody please tell me how to tune DMA parameters?
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