dvd issue now only occurs in 2.4.13

dvd issue now only occurs in 2.4.13

[Jim Hull]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

I fixed my previous pci issue by replacing the motherboard with an intel I
had lying around, the scsi issue and hdc lost interupt issue have been
resolved, however, I am still noticing a difference between 2.4.9 and
2.4.13 in which the dvd performance has suffered tremendously. I have now
tested on two different machines that have the same model dvd player and
both lock up on streaming dvd with 2.4.13 but play fine on 2.4.9. There
are no Oops' or kernel messages whent he dvd player locks, it justs locks
... I wonder if anyone else has noticed this problem yet ?



			Jim

============================
They that give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety.

- --Benjamin Franklin,
Historical Review of Pennyslvania, 1759


-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE72GVVdygyS8O4zQ0RArViAKC0ABKAc0F60MYkdPHhoiQNoUtU2gCgtsGQ
MHHEQd6ROgSOT5UEQm5PEv8=
=Re0b
-----END PGP SIGNATURE-----

dvd issue now only occurs in 2.4.13

[Duncan Sands]

This might be the same as the problem discussed in the
thread
  "xine pauses with recent (not -ac) kernels"
(try searching the list archive).  The conclusion seemed
to be that since there was a workaround if you are
using raw io (doing a

         sleep 100000 < /dev/dvd-device &

in the background before starting xine), the fix could wait
for the 2.5 kernels.

I hope this helps,

Duncan.

Re: dvd issue now only occurs in 2.4.13

[Jim Hull]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

All,
	This issue does not occur in linux-2.4.12-ac6 from Alans patches.
Anyhow, FYI.


			Jim

============================
They that give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety.

- --Benjamin Franklin,
Historical Review of Pennyslvania, 1759



On Thu, 25 Oct 2001, Jim Hull wrote:

I fixed my previous pci issue by replacing the motherboard with an intel I
had lying around, the scsi issue and hdc lost interupt issue have been
resolved, however, I am still noticing a difference between 2.4.9 and
2.4.13 in which the dvd performance has suffered tremendously. I have now
tested on two different machines that have the same model dvd player and
both lock up on streaming dvd with 2.4.13 but play fine on 2.4.9. There
are no Oops' or kernel messages whent he dvd player locks, it justs locks
... I wonder if anyone else has noticed this problem yet ?



			Jim

============================
They that give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety.

- --Benjamin Franklin,
Historical Review of Pennyslvania, 1759




- -
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/
- ------------ Output from gpg ------------
gpg: Signature made Thu Oct 25 12:17:41 2001 PDT using DSA key ID C3B8CD0D
gpg: Good signature from "James Hull <imaginos@imaginos.net>"


-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE72Hm8dygyS8O4zQ0RAnO9AKCTpXJTzTWyAn9QjCDfs1jQqo4etQCcD96H
/N3QNycRLIuS5dO799QybZI=
=o8Js
-----END PGP SIGNATURE-----

Re: dvd issue now only occurs in 2.4.13

[Jim Hull]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Yeah, unfortunatly that did not fix my issue, although I have been trying
to  follow the many different threads and from it appears, correct me if
i'm wrong .... the problem resides in the new VM implementation and file
readahead. I have been setting my file readahead to 2 megs (mainly cause my
son scratched the hell out of one of my dvd's and this seemed to correct
most of the crc errors I was recieving.) Anyhow, I set it to 0
(echo file_readahead:0 >/proc/ide/hdd/settings) and my dvd player is no
longer hanging. Odly enough, and maybe someone can explain this to me, my
scratched dvd plays perfect as to before it skipped like mad.


So is this an issue thats going to remain like this ? Will I no longer
need to set file readahead in the device itself under /proc ?


			Jim


============================
They that give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety.

- --Benjamin Franklin,
Historical Review of Pennyslvania, 1759



On Thu, 25 Oct 2001, Duncan Sands wrote:

This might be the same as the problem discussed in the
thread
  "xine pauses with recent (not -ac) kernels"
(try searching the list archive).  The conclusion seemed
to be that since there was a workaround if you are
using raw io (doing a

         sleep 100000 < /dev/dvd-device &

in the background before starting xine), the fix could wait
for the 2.5 kernels.

I hope this helps,

Duncan.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE72iMmdygyS8O4zQ0RAiisAJ9MsBoDuu0Js+wQuEAkPG78W3KIZwCfYTF6
ymoyT+QZDkLFE4mYAV5s1h8=
=WVCH
-----END PGP SIGNATURE-----