[self-interest] UI Performance Question

[Ben Moseley]

I'm also curious about what type of performance people should expect to 
see with Self on modern hardware. I imagine that it should be pretty 
good given that it was fine (indeed faster than Smalltalk...) in it's 
original days.

(I'm also seeing fairly slow performance on a G4 powerbook - under X - 
and I'm pretty sure I have the latest public build).

(Not complaining - it's fantastic to have anything at all to play with 
- but the current performance levels would make me think twice before 
attempting anything too ambitious on my hardware).

--Ben

On 16 Jun 2004, at 17:02, Michael Latta wrote:

> The X frame rate was the same as before: 9-12 fps on a screen with only
> the frame rate meter and a shell.
>
> Any other ideas?
>
> Michael
>
>
>
> On Jun 16, 2004, at 2:22 AM, ungar at mac.com wrote:
>
>> Michael,
>>
>> Are you using X or Carbon? It may have to do with the way the VM gets
>> Carbon events.
>> Try starting an X server, doing an xhost +, then saying
>> desktop openNewWorldOnDisplay: ':0.0'
>>
>> - David
>>
>>
>>
>> On Jun 15, 2004, at 3:03 PM, Michael Latta wrote:
>>
>>> Thanks for the pointer, but that does not seem to be the issue.
>>>
>>> If I use 120 it starts to slow down, but anything less gets the same
>>> 8-10 fps.  The times are very consistent between two very different
>>> machines: 1Ghz G4 and 2.0 Ghz G5.
>>>
>>> Self is only taking about 5% of the CPU to get 8-10 fps.  If I could
>>> get it to use more it would be very acceptable frame rates!
>>>
>>> Is it the semaphores?  It looks like Self is not using OS threads so
>>> it
>>> should not need OS semaphores.
>>>
>>> Any other ideas or ways to track down what is the issue would be
>>> welcome.
>>>
>>> Michael
>>>
>>>
>>>
>>> On Jun 15, 2004, at 2:08 PM, Jecel Assumpcao Jr wrote:
>>>
>>>> On Tuesday 15 June 2004 13:18, Michael Latta wrote:
>>>>> I am new to Self but have been poking around.  The frame rate in
>>>>> Self
>>>>> seems a bit low for me, and was poking around to find what is the
>>>>> issue.  On my G4 1Ghz I get 8-10 fps, but on my dual 2.0 G5 I also
>>>>> get 8-10 fps.  This leads me to believe there is some attempt to
>>>>> make
>>>>> the fps a fixed number rather than being driven as fast as 
>>>>> possible.
>>>>> But I have not been able to locate any timer based throttling of 
>>>>> the
>>>>> step processing for activities.  Any pointers would be welcome.
>>>>
>>>> Method 'runLoop' in traits worldMorph in includes this line
>>>>
>>>>   delayIfNoInputFor: (desiredFrameTime - computeTime) max: 0.
>>>>
>>>> and 'desiredFrameTime' is defined in traits worldMorph itself as 35.
>>>> Supposing that is milliseconds, then we should be throttling to some
>>>> 28
>>>> frames per second or so. Changing that to 15 didn't seems to have 
>>>> any
>>>> effect (on a 600MHz PC) while making it 8 did. I also tried 60 which
>>>> didn't seem to make it slower, but then 300 dropped to 3 frames per
>>>> second.
>>>>
>>>> -- Jecel
>>>>
>>>>
>>>>
>>>> Yahoo! Groups Links
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>> Yahoo! Groups Links
>>>
>>>
>>>
>>>
>>>
>>
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