Re: DVD_LU_SEND_AGID slow since 2.4.10

[Jens Axboe]

On Thu, Nov 08 2001, Guenter Bartsch wrote:
> Hallo list,
> 
> ever since 2.4.10 the SEND_AGID DVD_AUTH control seems to be very slow
> (used in libdvdcss, freezes xine for up to 30sec). The code that's
> executed seems to be:
> 
>     dvd_authinfo auth_info;
> 
>     memset( &auth_info, 0, sizeof( auth_info ) );
>     auth_info.type = DVD_LU_SEND_AGID;
>     auth_info.lsa.agid = *pi_agid;
> 
>     i_ret = ioctl( i_fd, DVD_AUTH, &auth_info );
> 
> anybody here have any idea what might cause this? could this really be
> just a caching problem caused by the new vm or is this something
> completely different I observe here? The -ac kernel series doesn't seem to
> have this problem on the same machine.
> 
> Any comments apreciated, please cc as I'm not subscribed to the list

Seems to have infested other (cdrom) ioctls as well. I'll take a look.

-- 
Jens Axboe