Re: [PATCH] IDE TCQ #4

Petr Vandrovec
2002-04-15T17:42:11Z

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
TCQ #X and IDE #YY patches should be aplied to 2.5.8 to get optimal
results (and I have to disconnect slaves...).
Best regards,
Petr Vandrovec
vandrove@vc.cvut.cz