[reportlab-users] Report generation time is not optimized - ideas?

[J. R. Carroll]

Throwing this out there, hoping to catch an idea or two:

The Setting:  our company has an open embedded device that we have
installed reportlab to.  On our local machines, it takes the report less
than a second to generate the PDF and save to disk - very quick - very nice
(thank you!).  On the target device it's taking anywhere from 6.5sec to
15.sec - not the best case scenario I can think of.

*Question 1*:  When we built on our local PC's, we used a standard debian
repo to pull down reportlab... THEN on top of that we installed
reportlab-accel (this information was passed down to me from my
mentor/boss).  When we installed on the target device, we built it from
source (via reportlab.com).  Our OE engineer for the device believes that
the source file already contains reportlab-accelerator as he can see the
files in the build directory.  He is comparing from a list SIMILAR to this:
http://packages.ubuntu.com/hardy/amd64/python-reportlab-accel/filelist, and
seeing that the reportlab-accelerator files are already included in the
source when installed from
http://www.reportlab.com/software/opensource/rl-toolkit/download/
(reportlab-2.6.tar.gz).  Is he correct in thinking there is no other
package he can install to improve PDF generation times?

*Question 2*:  Is there anything we can purchase from reportlab that will
make this faster (aka ReportLab Plus)?

To answer some of your (potential) questions and comments:  We are drawing
thousands of tiny-tiny-tiny lines to generate waveforms, this is why it
takes so long.  I will be profiling the code in the next few days as well,
looking at what I have written to see where I can make improvements, but I
wanted to see if there was any room for optimization on the reportlab side
(for what we've installed or could install) before I hammer away at my
stuff (which will certainly result in better performance once I identify
all my garbage code).

As an example of how we are drawing these many lines:

        wave = shapes.Drawing()

>         wave.add(shapes.PolyLine(wave_list, strokeWidth=.6))



Where wave_list represents the coordinates of the polyline we wish to draw.
 I'm assuming from what I have reviewed thus far there is no other
optimization I can do here...  right?


Thank you,



----


J. R. Carroll
Cell:  (650) 776-6613
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