The SYSINTERNALS tool you are referring to is PROCMON.
Great tool for tracking down internal issues in Windows.
Howard Shank
----- Original Message ----
From: Mike Marchywka <marchy...@hotmail.com>
To: itext-questions@lists.sourceforge.net
Sent: Tuesday, August 11, 2009 11:03:09 AM
Subject: Re: [iText-questions] out of Kernel memory
----------------------------------------
> Date: Tue, 11 Aug 2009 07:47:39 -0700
> From: hgshank
> To: itext-questions@lists.sourceforge.net
> Subject: Re: [iText-questions] out of Kernel memory
>
> If the files are being written to a different server and that server
> experiences memory issues, then it obviously is something to do with windows
> and the way it's handling the files and not an iText issue.
>
> Perform a memory leak dump analysis on the process while it is running using
> DebugDiags and select the process. You can do select the process and do a
> full dump and then analyze the dmp file to determine where the leak is being
> created.
I was going to suggest the heap analaysis tool when I thought this was
an issue with java :) I'm not even sure of the details here but is there
a "close" for the file? IIRC in the past when I don't explicitly call
close in some cases that should flush/close when reference count goes
to zero I've gotten incomplete files etc. If you believe it to be
handle related, there is a sysinternals tool ( handle IIRC) for checking
for open files etc. Sometimes resource depletion messages are not
literal ( "out of memory" could mean out of some related thing, I think
I've seen if for GDI's or something).
>
> Regards,
> Howard Shank
>
>
>
> ----- Original Message ----
> From: "Kobty, Joseph"
> To: Post all your questions about iText here
> Sent: Tuesday, August 11, 2009 10:30:47 AM
> Subject: Re: [iText-questions] out of Kernel memory
>
> Change your test to the following and let it run for a few minutes and you
> will see the kernel memory climb
> It does not happen in your example because you are writing to the same file
> name each time. Seems to be as the number of files generated increases, the
> problem occurs.
> Another interesting observation, The kernel memory increases out of control
> on the server where the files are being written to, not on the server where
> the application is running. This is what was throwing me off to think it is
> related to IIS or console application. Try the test below and let it run for
> a few minutes, eventually it will run out of kernel memory. The only
> modification to you code is that I am generating a different file for each
> loop iteration.
> for (int i = 0; i < 1000000; i++)
> {
>
> Document pdfDocument = new Document();
> String outputPath = @"c:\test";
> String reportName = "test" + i.ToString() + ".pdf";
> FileStream strm = new FileStream(Path.Combine(outputPath, reportName),
> FileMode.Create);
>
> PdfWriter writer = PdfWriter.GetInstance(pdfDocument, strm);
>
> pdfDocument.Open();
>
> pdfDocument.Add(new Paragraph("test"));
>
> pdfDocument.Close();
>
> }
>
> -----Original Message-----
> From: Paulo Soares [mailto:psoa...@glintt.com]
> Sent: August 10, 2009 5:03 PM
> To: Post all your questions about iText here
> Subject: Re: [iText-questions] out of Kernel memory
>
> I have this code running and all is ok.
>
> for (int i = 0; i < 1000000; i++) {
>
> Document pdfDocument = new Document();
>
> FileStream strm = new FileStream("c:\\atp.pdf", FileMode.Create);
>
> PdfWriter writer = PdfWriter.GetInstance(pdfDocument, strm);
>
> pdfDocument.Open();
>
> pdfDocument.Add(new Paragraph("test"));
>
> pdfDocument.Close();
>
> }
>
> Paulo
>
> ----- Original Message -----
> From: "Kobty, Joseph"
> To: "Post all your questions about iText here"
>
> Sent: Monday, August 10, 2009 9:32 PM
> Subject: Re: [iText-questions] out of Kernel memory
>
>
> Yes I am using V4.1.6.
> The .NET I have installed has version 2.0.50727.42
> Which I believe has the latest service packs.
>
>
> -----Original Message-----
> From: Paulo Soares [mailto:psoa...@glintt.com]
> Sent: August 10, 2009 4:16 PM
> To: Post all your questions about iText here
> Subject: Re: [iText-questions] out of Kernel memory
>
> Are you using iTextSharp 4.1.6? If you are using .NET 2.0 without SP1 you
> may have leaks due to leaks in the framework.
>
> Paulo
>
> ----- Original Message -----
> From: "Kobty, Joseph"
> To:
> Sent: Monday, August 10, 2009 8:46 PM
> Subject: [iText-questions] out of Kernel memory
>
>
> Hi
> I am creating PDF documents on the fly using iTextSharp. I noticed that the
> server where I am running this process runs out of Kernel memory (System
> memory)
> After about 50,000 files. I commented out all the code to see what is
> causing it, and it seems the mere fact of opening a PDF document and writing
> something simple like "test" and then closing it, uses a bit of kernel
> memory each time which is never released, so as thousands of files are
> created the kernel memory usage keeps climbing until my server finally shuts
> down and reboots. Seems to be done by the simple action of opening and
> closing a pdf document.
>
> For (int I = 0; I < 100000; i++)
> {
> Document pdfDocument = new Document();
> String outputPath = @"C:\";
> String reportName = "test" + i.ToString() + ".pdf";
> using (FileStream strm = new FileStream(Path.Combine(outputPath,
> reportName), FileMode.Create))
> {
> PdfWriter writer = PdfWriter.GetInstance(pdfDocument, strm);
> pdfDocument.Open();
> pdfDocument.Add(new Paragraph("test"));
> strm.Close();
> writer.Close();
> pdfDocument.Close();
> }
> }
> Joseph Kobty
> Team leader/Business analyst
>
> MediSolution Ltd. | A Brookfield Asset Management Company
> 5915 Airport Road, Suite 810, Mississauga, Ontario, L4V 1T1
> Tel 905.673.4100 ext 4042
> joseph.ko...@medisolution.com |
> www.medisolution.com
>
>
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> Check the site with examples before you ask questions:
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>
>
>
>
>
>
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