Hallo Slide,
thank you for your answer. I don't knwo if iTextSharp uses IDisposable.
I admit, I use it as a block box, but at least I suppose it's well
written, because I think it is a proven tool.
... and I apologize: I have found the mistake in my own code now. It was
a list which - unnecessarily - grew with every document and which was
worked upon rather costly. So I caused the problem myself. The program
has a constant throughput, and for now I'm happy.
But I still have no safe way to analyze such problems, and there are
still questions which I don't have an answer for:
Is ipy kosher in it's memory handling?
Where does this ever growing number of GCHandles (shown by sysinternals
procexp) come from? Can I simply ignore it?
Is it good practice to use explicit GC.Collect()-calls?
If anyone can share her/his experience in these fields, I would be happy.
Thanks in advance
Peter Schwalm
Am 10.12.2013 02:19, schrieb Slide:
Does itextsharp implement idisposable for any objects you are using?
On Dec 9, 2013 5:19 PM, "Peter Schwalm" <p...@peter-schwalm.de
<mailto:p...@peter-schwalm.de>> wrote:
Hello,
I have an ipy script that manipulates several thousand .pdf
documents in a single run via itextsharp. I observe that it is
permanently getting slower. After starting the program it
processes about 10 documents per second, after processing 5000
documents it does only process 3 oder 4 docs per second.
I have already in .net GC garbage collection calls which made the
situation something better (before that it was still worse).
Does anyone know if this could a fragmention problem? And what I
could against it?
Another peculiarity:
in sysinternals procexp I can see that the memory usage rises
during the excecution, but - after I inserted the GC.Collect()
calls - relative moderately. What rises constantly are the GC
handles (about 170.000 after 8000 documents). If I read the docs
it looks as if GCHandles are handles that make managed memory
accessible for non-managed programs.
Does anyone know where these GC handles come from, if they could
be the cause of my problems and what I could do against them?
Thanks in advance,
Peter Schwalm
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