-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 15/07/05 10:17:44, Bruno Randolf wrote:
On Friday 15 July 2005 10:21, jaypee@xxxxxxxxxx wrote:
> Yours is using ~30% cpu to send 100Mbps.
> Mine is using 100% to send 66Mbps.
i remember that ethernet thruput dropped from nearly 100Mbps to about
60-70Mbps on our Au1500 based board, when we enabled
CONFIG_NONCOHERENT_IO...
Thanks Bruno but I can't find that config option to select.
I did find CONFIG_
Changing from CONFIG_DMA_NONCOHERENT to CONFIG_DMA_COHERENT make no
difference, although I can see that if the kernel invalidates the cache
line for each packet on send there would be a performance hit.
Clem can you send me your .config to see if I can figure out why your
setup works?
bruno
- --
mailto:jaypee@xxxxxxxxxx
http://www.jaypee.org.uk
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.1 (GNU/Linux)
iD8DBQFC230BZDxnKy3oOpYRAjq2AJ49DO0KrqGmWcS1N1dHHLe2lOlEhgCeNyqw
aTRA+DA6FyMNakcLBt5oV88=
=TR4O
-----END PGP SIGNATURE-----
