lkml.org 
[lkml]   [2003]   [Jun]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: SOLVED - Testing IDE-TCQ and Taskfile - doesn't work nicely:)

On Wed, 25 Jun 2003, Jan-Benedict Glaw wrote:

> On Wed, 2003-06-25 20:44:19 +0200, Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
> wrote in message <Pine.SOL.4.30.0306252040570.11992-100000@mion.elka.pw.edu.pl>:
> > On Wed, 25 Jun 2003, Jan-Benedict Glaw wrote:
> > > On Wed, 2003-06-25 01:08:13 +0200, Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
> > > wrote in message <Pine.SOL.4.30.0306250107180.17106-100000@mion.elka.pw.edu.pl>:
> > > > On Wed, 25 Jun 2003, Jan-Benedict Glaw wrote:
> > > > > On Tue, 2003-06-24 15:44:36 +0200, Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
> > > > > wrote in message <Pine.SOL.4.30.0306241543050.23584-100000@mion.elka.pw.edu.pl>:
>
> > > However, allow me to ask why this occured never bevore (for other
> > > people)? Do they all have only one drive? Does nobody use TCQ? Nobody
> > > with old hardware (though, your patch hasn't touched the core PIIX
> > > parts...)?
> >
> > nobody is stupid^H^Hbrave enough to use TCQ ;-)
>
> Well... I knew that it was, erm, brave to use it at some time (this box
> isn't really important - if I kill its filesystems, I'll simply
> re-install and recover my mirror scripts:) , but new, where 2.5.x
> starts to be really useable, I'd suggest to face users with upcoming
> problems:

I think 2.5.x is really useable.

> CONFIG_IDE_TASKFILE_IO
> It is safe to say Y to this question, in most cases.
>
> (By the way, exactly which cases are ment?)

Ehh... 3 weird bugreports (all are oopses):
- on x86_64 with 32 bit userspace when reading /proc/ide/hdx/identify
- in task_mulout_intr() on access to freed rq->bio
- "bad: scheduling while atomic"

I don't have any ideas how to find&fix these bugs...

> CONFIG_BLK_DEV_IDE_TCQ
> If you have such a drive, say Y here.

TCQ is marked (EXPERIMENTAL) but there should be warning
about potential risk... :-)

> CONFIG_BLK_DEV_IDE_TCQ_DEFAULT
> Generally say Y here.
>
>
> CONFIG_BLK_DEV_IDE_TCQ_DEPTH
> You probably just want the default of 32 here.
>
> (Default queue depth is 8, not 32...)

Jens did some testing ages ago and 8 was optimal...

> Right now, I'm building 2.5.73-bk3 + your 2nd patch. Let's face it:)

Okay. :-)
--
Bartlomiej

> MfG, JBG
>
> --
> Jan-Benedict Glaw jbglaw@lug-owl.de . +49-172-7608481
> "Eine Freie Meinung in einem Freien Kopf | Gegen Zensur | Gegen Krieg
> fuer einen Freien Staat voll Freier Bürger" | im Internet! | im Irak!
> ret = do_actions((curr | FREE_SPEECH) & ~(IRAQ_WAR_2 | DRM | TCPA));

-
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/

\
 
 \ /
  Last update: 2005-03-22 13:36    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site