From: Randolph Chung <randolph@tausq.org>
To: "M. Grabert" <xam@cs.ucc.ie>
Cc: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] C3000 and IDE DMA support
Date: Tue, 26 Aug 2003 07:52:38 -0700 [thread overview]
Message-ID: <20030826145238.GS21328@tausq.org> (raw)
In-Reply-To: <Pine.LNX.4.44.0308261152480.6589-100000@sal.ucc.ie>
> - the hard disk performs very bad (just 3.13 MB/s instead of expected
> >30 MB/s, tested with similar drive in PC and same hdparm settings)
> In fact it shows typical data rates for unsupported DMA transfers
You are right, DMA is not yet supported on superio... at some point it
was sort of working, but not very reliably...
it's a worthwhile project if you want to do some kernel hacking :-)
randolph
--
Randolph Chung
Debian GNU/Linux Developer, hppa/ia64 ports
http://www.tausq.org/
next prev parent reply other threads:[~2003-08-26 14:49 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-26 11:46 [parisc-linux] C3000 and IDE DMA support M. Grabert
2003-08-26 14:52 ` Randolph Chung [this message]
2003-08-27 16:30 ` Alan Cox
2003-08-27 17:36 ` M. Grabert
2003-08-27 21:23 ` Alan Cox
2003-08-27 21:44 ` Grant Grundler
2003-08-27 22:22 ` Alan Cox
2003-08-27 23:09 ` Grant Grundler
2003-08-27 23:19 ` M. Grabert
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