13 Sep
2012
13 Sep
'12
6:13 p.m.
Hello all,
I sat with Benjamin today to have a look at Glamour performance when
displaying large text files. For reminder, when displaying text in glamour,
the time to display text increases exponentially with the size of the text
being displayed.
Two observations:
1/ Whereas, with the following script the execution time remains equivalent
to that of morphs
MessageTally spyOn: [ (*GLMPluggableTextMorph*
on: [ (StandardFileStream fileNamed: 'testfile-glam-3500.txt') contents ]
text: #value
accept: nil) openInWindow extent: (1273.0(a)738.0) ]
the execution of this script is four times longer:
| browser text|
browser := *GLMTabulator* new.
browser column: #text.
browser transmit to: #text; andShow: [ :a |
a text
title: 'Text with selection';
display: [(StandardFileStream fileNamed: 'testfile-glam-3500.txt')
contents]].
MessageTally spyOn: [browser openOn: 2].
2/ A bit of digging (using time profiler) shows that the garbage collector
is taking 75% of the execution time. [image: Inline image 1]
Doru, will you have an idea what makes garbage collector execute and take
extra seconds when the text is displayed in a glamour browser instead of
individual glmaour widget?
The moose image with the scripts can be found here if you want to have a
look.
http://dl.dropbox.com/u/11804892/glamour-perf-tests.zip
thanx in advance,
Usman
13 Sep
13 Sep
8:45 p.m.
Hi,
Not really. We would need some spy over the objects that get created to
answer that question. I will try to take a look, but I cannot promise
anything.
However, I think we can find another solution. Perhaps we could create
another presentation that uses a plain TextMorph that is less heavy than
the PluggableTextMorph.
Cheers,
Doru
On Thu, Sep 13, 2012 at 6:13 PM, Usman Bhatti <usman.bhatti(a)gmail.com>wrote;wrote:
Hello all,
I sat with Benjamin today to have a look at Glamour performance when
displaying large text files. For reminder, when displaying text in glamour,
the time to display text increases exponentially with the size of the text
being displayed.
Two observations:
1/ Whereas, with the following script the execution time remains
equivalent to that of morphs
MessageTally spyOn: [ (*GLMPluggableTextMorph*
on: [ (StandardFileStream fileNamed: 'testfile-glam-3500.txt') contents ]
text: #value
accept: nil) openInWindow extent: (1273.0(a)738.0) ]
the execution of this script is four times longer:
| browser text|
browser := *GLMTabulator* new.
browser column: #text.
browser transmit to: #text; andShow: [ :a |
a text
title: 'Text with selection';
display: [(StandardFileStream fileNamed: 'testfile-glam-3500.txt')
contents]].
MessageTally spyOn: [browser openOn: 2].
2/ A bit of digging (using time profiler) shows that the garbage collector
is taking 75% of the execution time. [image: Inline image 1]
Doru, will you have an idea what makes garbage collector execute and take
extra seconds when the text is displayed in a glamour browser instead of
individual glmaour widget?
The moose image with the scripts can be found here if you want to have a
look.
http://dl.dropbox.com/u/11804892/glamour-perf-tests.zip
thanx in advance,
Usman
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14 Sep
14 Sep
8:43 a.m.
usman
this is strange that there is so much trashing of the GC.
Now this is probably not the answer but can you apply the change made by alain to see the
difference?
this change short cuts the use of widestrings.
!Paragraph methodsFor: 'composition' stamp: 'AlainPlantec 9/13/2012
23:45'!
composeAll
^ self
composeLinesFrom: firstCharacterIndex
to: text size
delta: 0
into: OrderedCollection new
priorLines: Array new
atY: container top! !
stef
On Sep 13, 2012, at 6:13 PM, Usman Bhatti wrote:
Hello all,
I sat with Benjamin today to have a look at Glamour performance when displaying large
text files. For reminder, when displaying text in glamour, the time to display text
increases exponentially with the size of the text being displayed.
Two observations:
1/ Whereas, with the following script the execution time remains equivalent to that of
morphs
MessageTally spyOn: [ (GLMPluggableTextMorph
on: [ (StandardFileStream fileNamed: 'testfile-glam-3500.txt') contents ]
text: #value
accept: nil) openInWindow extent: (1273.0(a)738.0) ]
the execution of this script is four times longer:
| browser text|
browser := GLMTabulator new.
browser column: #text.
browser transmit to: #text; andShow: [ :a |
a text
title: 'Text with selection';
display: [(StandardFileStream fileNamed: 'testfile-glam-3500.txt')
contents]].
MessageTally spyOn: [browser openOn: 2].
2/ A bit of digging (using time profiler) shows that the garbage collector is taking 75%
of the execution time. <image.png>
Doru, will you have an idea what makes garbage collector execute and take extra seconds
when the text is displayed in a glamour browser instead of individual glmaour widget?
The moose image with the scripts can be found here if you want to have a look.
http://dl.dropbox.com/u/11804892/glamour-perf-tests.zip
thanx in advance,
Usman
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4482
days inactive
4483
days old
2 comments
3 participants
participants (3)
-
Stéphane Ducasse -
Tudor Girba -
Usman Bhatti