LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Robert Hancock <hancockr@shaw.ca>
To: "\"J.A. Magallón\"" <jamagallon@ono.com>
Cc: "Linux-Kernel, " <linux-kernel@vger.kernel.org>
Subject: Re: Again... DMA speed too slow
Date: Sun, 30 Mar 2008 18:59:13 -0600	[thread overview]
Message-ID: <47F03761.4090801@shaw.ca> (raw)
In-Reply-To: <fa.kS8AgwgGnOORqOO36Liq2hSrgfI@ifi.uio.no>

J.A. Magallón wrote:
> Hi all...
> 
> I have tried to burn some data from the commandline with wodim (since time
> ago I just used beasero...), and I have noticed this (media is CD, not DVD):
> 
> Vendor_info    : 'HL-DT-ST'
> Identification : 'DVDRAM GSA-H10N '
> Revision       : 'JL12'
> Device seems to be: Generic mmc2 DVD-R/DVD-RW.
> Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
> Driver flags   : MMC-3 SWABAUDIO BURNFREE
> Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
> Speed set to 8467 KB/s
> wodim: DMA speed too slow (OK for 5x). Cannot write at speed 48x.
> Starting to write CD/DVD at speed  48.0 in real TAO mode for single session.
> 
> I just can burn CDs at 5x ??
> But then the program tries to write at 48x.
> It the DMA message really true ?

No, UDMA33 should be more than fast enough. My guess is that wodim is 
determining the DMA speed using some unreliable mechanism.

       reply	other threads:[~2008-03-31  1:01 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <fa.kS8AgwgGnOORqOO36Liq2hSrgfI@ifi.uio.no>
2008-03-31  0:59 ` Robert Hancock [this message]
2008-04-14 16:54 Joerg Schilling
2008-04-14 16:56 ` Alan Cox
2008-04-14 17:19   ` Joerg Schilling
2008-04-14 17:29     ` Alan Cox
2008-04-14 17:44       ` Alan
2008-04-14 18:28         ` Joerg Schilling
2008-04-14 18:21       ` Joerg Schilling
  -- strict thread matches above, loose matches on Subject: below --
2008-03-30 21:53 J.A. Magallón
2008-04-02  7:16 ` Andrew Morton
2008-04-13  2:23   ` Tejun Heo

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=47F03761.4090801@shaw.ca \
    --to=hancockr@shaw.ca \
    --cc=jamagallon@ono.com \
    --cc=linux-kernel@vger.kernel.org \
    --subject='Re: Again... DMA speed too slow' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).