What's the problem? The GC takes care of that.
Paulo
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of greggan1
> Sent: Friday, June 08, 2007 9:17 AM
> To: [email protected]
> Subject: [iText-questions] High memory allocation with PdfPTable
>
>
> Hi
>
> I have tested your
> http://itextdocs.lowagie.com/tutorial/objects/tables/pdfptable
> /index.html#memory
> and analyzed the memory allocation during the build with NuMega from
> Compuware. The result shows that 205 MB are used and about
> 575 thousand
> objects are temporarily created for the result, a pdf with a
> size of 53kb.
> The method BidiLine() used about 182 MB of memory.
>
>
>
> I then tried the older Table class and did the same loop with
> the result
> that 22 MB of memory were allocated and 610 thousand objects created.
>
>
> I'm using itext-2.0.0.jar.
>
>
> Should it be like this? Or is it a bug in PdfPTable? Or
> shouldn't itext be
> used as a server side solution? I'm planning to use this on a
> web site with
> many users creating pdf's but it will make the server running
> very slow. The
> server must garbage collect immediately after a pdf is created.
>
> Temporary Bytes including Children: 210,014,040 Bytes
> Temporary Objects including Children: 590,701
>
> PdfPTable
> Size of PDF: 53 kb
> public void fragmentTable()
> {
> System.out.println("FragmentTable");
> int fragmentsize = 50;
> // step1
> Document document = new
> Document(PageSize.A4.rotate(), 10, 10, 10,
> 10);
> try {
> // step2
> PdfWriter.getInstance(document,
> new
> FileOutputStream("FragmentTable.pdf"));
> // step3
> document.open();
> // step4
>
> PdfPTable table = new PdfPTable(2);
> table.setWidthPercentage(100f);
>
> PdfPCell cell;
> for (int row = 1; row <= 2000; row++) {
> if (row % fragmentsize == 0) {
> document.add(table);
> table.deleteBodyRows();
> table.setSkipFirstHeader(true);
> }
> cell = new PdfPCell(new
> Paragraph(String.valueOf(row)));
> table.addCell(cell);
> cell = new PdfPCell(new
> Paragraph("Hello World"));
> table.addCell(cell);
> }
> document.add(table);
> } catch (Exception de) {
> de.printStackTrace();
> }
> // step5
> document.close();
> }
> Temporary Bytes including Children: 205,371,200 Bytes
> Temporary Objects including Children: 575,385
>
>
>
> The memory allocation is the same if you skip the part with "
> if (row %
> fragmentsize == 0) { ......
>
>
>
> Method: BidiLine.BidiLine()
> Package: com.lowagie.text.pdf
> View Call Graph
> View Source Code
> Execution Count: 8,040
> Temporary Bytes: 182,797,440 Bytes
> Temporary Objects: 80,400
>
>
>
>
>
> Table
>
> Size of PDF: 68 kb
> public void oldFragmentTable()
> {
> System.out.println("FragmentTable2");
> int fragmentsize = 50;
> // step1
> Document document = new
> Document(PageSize.A4.rotate(), 10,
> 10, 10, 10);
> try {
> // step2
> PdfWriter.getInstance(document,
> new
> FileOutputStream("FragmentTable2.pdf"));
> // step3
> document.open();
> // step4
>
> Table table = new Table(2);
> table.setWidth(100f);
>
> Cell cell;
> for (int row = 1; row <= 2000; row++) {
> cell = new Cell(String.valueOf(row));
> table.addCell(cell);
> cell = new Cell("Hello World");
> table.addCell(cell);
> }
> document.add(table);
> } catch (Exception de) {
> de.printStackTrace();
> }
> // step5
> document.close();
> }
> Temporary Bytes including Children: 22,476,600 Bytes
> Temporary Objects including Children: 610,873
>
>
>
> Method: PdfDocument.add(com.lowagie.text.pdf.PdfTable, boolean)
> Package: com.lowagie.text.pdf
>
> View Call Graph
> View Source Code
> Temporary Bytes: 6,608,088 Bytes
> Temporary Objects: 191,496
>
> //greggan
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