[Newbies] RE: Why Squeak is so sloooow?

[stephane ducasse]

can you report that on squeak-dev?

On 21 sept. 06, at 21:07, David Shaffer wrote:

> Milan Zimmermann wrote:
>> On 2006 September 21 11:55, David Shaffer wrote:
>>
>>> You're certainly right Brad but let me add that the Squeak 3.9  
>>> image is
>>> unbearably slow on my linux-based laptop (2Ghz Pentium 4M, 1Gb RAM).
>>> I've even tried VM's from 3.8 to Ian's recent 3.9 release.  It is  
>>> too
>>> slow for simple window operations and causes a gastly amount of CPU
>>> utilization even under lite GUI use.
>>>
>>
>> David,
>>
>> This is suprising, on my:
>> 	- old Athlon 2400
>> 	- SuSE9.3
>> 	- VM Squeak3.9alpha of 4 July 2005 [latest update: #7021],
>> 	- latest 3.9 gama 7058 image
>> 	- 1280x960
>>
>> I was just recently thinking "this is best speed I have seen since  
>> 3.7". When
>> doing simple windows operations (moving around, resizing etc) top  
>> reports
>> below 30%, always for a very brief period when doing the work  
>> (typically
>> below 20%).
>>
>
> shaffer at localhost ~/Squeak/Squeak3.9g-7055 $ squeak -version
> 3.9-7 #1 Mon Sep  4 17:01:02 EDT 2006 gcc 3.4.6
> Squeak3.9alpha of 4 July 2005 [latest update: #7021]
> Linux localhost 2.6.17-gentoo-r4 #1 PREEMPT Thu Aug 24 18:31:06 EDT  
> 2006
> i686 Mobile Intel(R) Pentium(R) 4 - M CPU 2.00GHz GNU/Linux
> default plugin location: /usr/local/lib/squeak/3.9-7/*.so
>
>
>> Yoshiki's test (higlight, alt-p)
>> | a b |
>> a := FloatArray new: (16 * 1024*1024).
>> b := FloatArray new: (16 * 1024*1024).
>> [a += b] timeToRun.
>> 268
>>
> Under 3.9g-7055 I get numbers in the hundreds.  Average of about  
> 157 ms.
>
>
>> David or Antonio, if you would like to compare:
>> (higlight, alt-p)
>> [
>> 1 to: 10 do: [ :i |
>> XYPlotter example1 plot asMorph openInWorld.
>> XYPlotter example2 plot asMorph openInWorld.
>> XYPlotter example3 plot asMorph openInWorld.
>> XYPlotter example4 plot asMorph openInWorld.
>> XYPlotter example5 plot asMorph openInWorld.
>> XYPlotter example6 plot asMorph openInWorld.
>> ]
>> ] timeToRun.
>> ===> RESULT 17295 (hardware as above)
>
>
> There is no XYPlotter in my 3.9g-7055 image.  I tried loading Plot  
> Morph
> and Plot Morph 2 from SqueakMap.  Neither worked so I'm guessing  
> that's
> not the source of this class for 3.9.  I'd be happy to run this
> benchmark on the off chance it will lead to some information about why
> things are sluggish.  I'm guessing, though, that it is a dead-end.
> "feels slow" is often hard to track down in benchmarks.  Probably
> something that does window manipulation would reveal the problem...
>
> David
>
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