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From: Peter Schultz <pmes@bis.midco.net>
Date: Fri, 7 Jan 2005 21:26:04 -0600
To: current@freebsd.org
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Subject: Re: MFC wishlist
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On Jan 7, 2005, at 9:07 PM, Xin LI wrote:

> On Fri, Jan 07, 2005 at 04:55:40PM -0800, Steve Kargl wrote:
>> On Sat, Jan 08, 2005 at 01:11:40AM +0100, Ivan Voras wrote:
>>> It's been a while now and (judging from this list at least), people 
>>> are
>>> not complaining about ULE, so maybe (with re@ approval) the fix &
>>> supporting infrastructure could be brought to RELENG_5?
>>>
>>
>> That's not a good idea.  I can lock up ULE+PREEMPTION on
>> a dual amd64 system within 30 minutes.  The system is
>> runnnig X11 and normally firefox (or other threaded
>> app) and it simply freezes.  No panic.  No keyboard
>> response.  Nothing.
>
> This is observed in pre-5.3RELEASE CURRENT, but I thought Jeff has
> already fixed it in -CURRENT.  I don't have dual amd64 system to do
> such experiments, are you sure you are talking about the latest
> 6-CURRENT, or just 5.3?
>
>
I can lock up this configuration on a dual PII350 6-CURRENT machine in 
a couple minutes.  I never did get a chance to test Jeff's patch, does 
anyone know if it will still apply cleanly?

Pete...