Re: [patch 0/3] j_state_lock, j_list_lock, remove-bitlocks

Lee Revell
2005-03-17T16:36:49Z

On Thu, 2005-03-17 at 11:23 -0500, Steven Rostedt wrote:
>
> On Thu, 17 Mar 2005, Lee Revell wrote:
>
> >
> > Sorry, it's hard to follow this thread. Just to make sure we're all on
> > the same page, what exactly is the symptom of this ext3 issue you are
> > working on? Is it a performance regression, or a latency issue, or a
> > lockup - ?
> >
> > Whatever your problem is, I am not seeing it.
> >
>
> The root is a lockup. I think you can get this lockup whether or not it
> is PREEMPT_RT or PREEPMT_DESKTOP. All you need is CONFIG_PREEMPT turned
> on. Then this is what you want to do on a UP Machine.

OK, no need to cc: me on this one any more. It's really low priority
IMO compared to the big latencies I am seeing with ext3 and
"data=ordered". Unless you think there is any relation.

Lee