Re: [PATCH] IDE TCQ #4

Jens Axboe
2002-04-15T18:26:35Z

On Mon, Apr 15 2002, Petr Vandrovec wrote:
> On 15 Apr 02 at 18:44, Jens Axboe wrote:
>
> > > You can run a IDENTIFY_DEVICE from user space with the task ioctls and
> > > look at word 83 -- bit 1 and 14 must be set for TCQ to be supported. If
> > > you give me the model identifier from the IBM drive, I can tell you if
> > > it has tcq or not...
> > >
> > > I'll write a small util to detect this tomorrow and send it to you + the
> > > list.
> >
> > Duh, you can of course just look at /proc/ide/ideX/hdY/identify and
> > parse that. The info above is still valid for that, of course :-)
>
> If I parsed file correctly (it is 83 decimal word, yes?), WD's
> WDC WD1200JB-00CRA0 supports TCQ too. I'm still deciding which of

Ok

> TCQ #X and IDE #YY patches should be aplied to 2.5.8 to get optimal
> results (and I have to disconnect slaves...).

The latest I posted, and slaves are fine.

--
Jens Axboe