dma on aha152x

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2 total messages Started by Loon Wed, 13 Sep 1995 00:00

#413

Author: Loon
Date: Wed, 13 Sep 1995 00:00

29 lines
1354 bytes

just wondering which would be faster (in terms of thruput and cpu load)
with an adaptec 152x card, dma of pio under linux?

logically, dma should be more gentle to cpu load than pio but what about
actual data thruput?

the doc's say that it only supports dma channel 0 (which is 8 bit?)
but the hardware seems to support channel's 5,6 and maybe 7, or
something like that...

anyone tried it?

if you could mail me a copy of any reply to this i would be very grateful
the turnover on these newsgroups is so high it is real easy to miss :)

thanks

james
--
LOON

stay away from me. i'm wierd.

GCS d-? s:-- a--- C++(++++) UL++++ P+ L++>++++ E- W++ N++ K- w(---) O-
    M-- V(--) PS+ PE- Y+ PGP- t 5 x+ R(+) !tv l++ DI(+) D+ G e>++(*)
    h-(---) r++ y?

just another nerd with something in his sig about the information
super highway.....

Re: dma on aha152x

#415

Author: Terry McHugh
Date: Wed, 13 Sep 1995 00:00

27 lines
1389 bytes

I'm also wondering about this.  If anyone has an answer, could you e-mail 
me as well?
TIA!
Tom McHugh <tom@opus.cais.com>

Loon (i942299@redgum.bendigo.latrobe.edu.au) wrote:
: just wondering which would be faster (in terms of thruput and cpu load)
: with an adaptec 152x card, dma of pio under linux?

: logically, dma should be more gentle to cpu load than pio but what about
: actual data thruput?

: the doc's say that it only supports dma channel 0 (which is 8 bit?)
: but the hardware seems to support channel's 5,6 and maybe 7, or
: something like that...

: anyone tried it?

: if you could mail me a copy of any reply to this i would be very grateful
: the turnover on these newsgroups is so high it is real easy to miss :)

: thanks

: james
: --
: LOON

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