Was: More ULE bugs fixed. Is: Mouse problem?

[Eirik Oeverby]

Eirik Oeverby wrote:
> Just for those interested:
> I do *not* get any messages at all from the kernel (or elsewhere) when 
> my mouse goes haywire. And it's an absolute truth (just tested back and 
> forth 8 times) that it *only* happens with SCHED_ULE and *only* with old 
> versions (~1.50) and the very latest ones (1.75 as I'm currently 
> running). 1.69 for instance did *not* show any such problems.
> 
> I will, however, update my kernel again now, to get the latest 
> sched_ule.c (if any changes have been made since 1.75) and to test with 
> the new interrupt handler. I have a suspicion it might be a combination 
> of SCHED_ULE and some signal/message/interrupt handling causing messages 
> to get lost along the way. Because that's exactly how it feels...

Whee. Either the bump from sched_ule.c 1.75 to 1.77 changed something 
back to the old status, or the new interrupt handling has had some major 
influence.
All I can say is - wow. My system is now more responsive than ever, I 
cannot (so far) reproduce any mouse jerkiness or bogus input or 
anything, and things seem smoother.

As always I cannot guarantee that this report is not influenced by the 
placebo effect, but I do feel that it's a very real improvement. The 
fact that I can start VMWare, Firebird, Thunderbird, Gaim and gkrellm at 
the same time without having *one* mouse hickup speaks for itself. I 
couldn't even do that with ULE.

So Jeff or whoever did the interrupt stuff - what did you do?

/Eirik

> 
> Greetings,
> /Eirik
> 
> Morten Johansen wrote:
> 
>> On Tue, 4 Nov 2003, Sheldon Hearn wrote:
>>
>>> On (2003/11/04 09:29), Eirik Oeverby wrote:
>>>
>>> > The problem is two parts: The mouse tends to 'lock up' for brief 
>>> moments
>>> > when the system is under load, in particular during heavy UI 
>>> operations
>>> > or when doing compile jobs and such.
>>> > The second part of the problem is related, and is manifested by the
>>> > mouse actually making movements I never asked it to make.
>>>
>>> Wow, I just assumed it was a local problem.  I'm also seeing unrequested
>>> mouse movement, as if the signals from movements are repeated or
>>> amplified.
>>>
>>> The thing is, I'm using 4BSD, not ULE, so I wouldn't trouble Jeff to
>>> look for a cause for that specific problem in ULE.
>>
>>
>>
>>
>> Me too. Have had this problem since I got a "Intellimouse" PS/2 
>> wheel-mouse. (It worked fine with previous mice (no wheel)).
>> With any scheduler in 5-CURRENT and even more frequent in 4-STABLE, 
>> IIRC. Using moused or not doesn't make a difference.
>> Get these messages on console: "psmintr: out of sync", and the mouse 
>> freezes then goes wild for a few seconds.
>> Can happen under load and sometimes when closing Mozilla (not often).
>> It could be related to the psm-driver. Or maybe I have a bad mouse, I 
>> don't know.
>> I will try another mouse, but it does work perfectly in Linux and 
>> Windogs...
>>
>> mj
>>
>>
>>
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> 
> 
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