Hi, I have a web application using matplotlib which is unpredictably crashing with the error message from the subject. It seems to be happening in ft2font, but I can't be certain at this stage that it's only occurring there (although since isolating it via logging statements, every time it has occurred has been in that spot). The crash occurs at load time, seemingly through a chain of import statements (starting with wsgi app -> django -> my app): matplotlib.colorbar -> matplotlib.lines -> matplotlib.font_manager -> matplotlib.ft2font
Google is strangely quiet on that particular message; the closest I have found that also involves ft2font was this rather old one: http://comments.gmane.org/gmane.comp.python.matplotlib.devel/1332 The unpredictable nature of it suggests that it's thread-related, but other than that I have no further clues. The unpredictable nature of the crashes obviously makes testing any theory or avenue quite slow at times! Does anyone have any suggestions, hints for further probing,... anything, please? The particulars: Server OS: openSUSE 11.3 (x86_64) matplotlib: 1.0.0 (compiled from source distro) Server: apache prefork, mod_wsgi Python version: 2.6.4 Extra factors: There are two versions of the application, deployed in virtualenvs (identical matplotlib versions). It does affect both of them, although I've only been investigating with one. It frequently seems to affect a group of processes; that is, reloading is required multiple times before it returns to normal. mod_wsgi is running in embedded mode, but the same problem was occurring with mod_python -- that was my main impetus for porting to wsgi in fact. The same application ran fine on the previous server however (SUSE Linux Enterprise Server 11 (x86_64)), in fact with 3 versions of the application, using mod_python. It was previously using matplotlib 0.98.5.2; according to my commit message the upgrade was prompted by the server move and that version not compiling against libpng1.4 on the new server. Thanks, Mark. -- Where the hell is Mark: http://blog.everythingtastesbetterwithchilli.com/ ------------------------------------------------------------------------------ What Every C/C++ and Fortran developer Should Know! Read this article and learn how Intel has extended the reach of its next-generation tools to help Windows* and Linux* C/C++ and Fortran developers boost performance applications - including clusters. http://p.sf.net/sfu/intel-dev2devmay _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
