[reportlab-users] Re: Generating huge reports and memory consumption

[Robin Becker]

In article <oqd6ne2rr4.fsf@titan.progiciels-bpi.ca>, François Pinard
<pinard@iro.umontreal.ca> writes

OK Francois, I tried this dummy test

###############################################
from reportlab.lib.styles import ParagraphStyle
from reportlab.platypus import *
def main():
        i = 0
        story = []
        for x in xrange(100,300):
                story.append(Paragraph(str(x),ParagraphStyle('normal')))
                story.append(PageBreak())
                if i % 100==0:
                        fn = "test_%03d.pdf"%i
                        SimpleDocTemplate(fn).build(story)
                        print 'Build',fn
                        story = []
                i += 1
        if story:
                fn = "test_%03d.pdf"%i
                SimpleDocTemplate(fn).build(story)
                print 'Build',fn
                story = []

if __name__=='__main__':
        from ressources import rapporter
        rapporter('Report 1')
        main()
        rapporter('Report 2')
###############################################
Report 1
.......
    0 + 3     references to tempfile.TemporaryFileWrapper
Build test_000.pdf
Build test_100.pdf
Build test_200.pdf
Report 2
    4 + 2     references to reportlab.pdfbase.pdfmetrics.Font
    4 + 2     references to reportlab.pdfbase.pdfmetrics.TypeFace
    3 + 1     references to reportlab.lib.sequencer.Sequencer
    3 + 1     references to reportlab.pdfbase.pdfmetrics.Encoding



So I don't seem to have a lot hanging about.

When I change the upper limit to 900 I see
.....
Build test_800.pdf
Report 2
    4 + 2     references to reportlab.pdfbase.pdfmetrics.Font
    4 + 2     references to reportlab.pdfbase.pdfmetrics.TypeFace
    3 + 1     references to reportlab.lib.sequencer.Sequencer
    3 + 1     references to reportlab.pdfbase.pdfmetrics.Encoding

so only the same things are hanging about. Even so, when I check the
memory usage it still increases with total page count.
-- 
Robin Becker