Hi all,
I am running into a lot of strange performance issues with certain PDF files.
Background info:
The strange thing I can't reproduce this consistently. When I get a pdf being
generated on a particular environment it seems consistent. I do most of my
development inside VirtualBox virtual machine running fedora. These pdf files I
am having problems with never have performance issues when run on my virtual
machine local drive, but if I use a Virtual Box Shared drive as the source /
destination for the PDF, I see the problem. Another co-worker working from pure
windows environment experience the performance problem. We are also seeing the
same issue on our dev solaris servers. The performance range can be quite
drastic on one of our 3DPDF's (12meg) running on my local environment it can be
opened, stamped with some text, encrypted, and saved in around 8 sec. Doing the
same job pointing to a virtual box share drive or on our solaris server that
same work will take minutes. On my coworkers windows environment it takes
around 30 seconds. We really only reproduced this consistently on the 12m 3D
PDF. I have a much smaller pdf (non 3d / convert from msoffice) that does show
similar performance issue but the times range from 200ms local to 8 sec.
The one thing I see in common between the 2 files is I see a lot of the
following messages to the console:
Using output from the 12m 3DPDF file:
:
:
1787 [main] DEBUG org.apache.pdfbox.pdfparser.PDFObjectStreamParser -
parsed=COSObject{13166, 0}
These messages seem to happen on the PDDocument.open and from what I can tell,
I get 13,166 of these messages in this example PDF.
The slowness does not happen until the following line:
document.save(outputPDFStream);
Other PDF's including some quite large I do not see this performance issue nor
those log messages.
I know this is not much to go on, I am working on seeing if I can isolate this
down to something more concrete / reproducible point. But I thought I would
send this out to see if anyone has any ideas or have seen issues similar to
this? Suggestions?
Thanks,
Patrick
