Dear rdflib contributors and maintainers, I have recently been trying to update rdflib to version 6 from 4.2.2. Upon doing so, a process I normally run, which uses rdflib to load a large xml RDF file into a graph, has a significantly larger memory profile and latency (for my large file, parsing is taking about 1.5x as much time).
I've traced the issue back to the graph.parse method. More specifically, by profiling the graph.parse with versions 6.1.1 and 4.2.2, I can see that calls to access members of the RDF class (mostly occurring in the node_element_start method here <https://github.com/RDFLib/rdflib/blob/master/rdflib/plugins/parsers/rdfxml.py#L299> as well as the property_element_start method) seem to be taking up a significantly longer time, as they the class is now a DefinedNamespace with overridden __getitem__ and __contains <https://github.com/RDFLib/rdflib/blob/2011a6dd85518642e0800b2ee010a5565e16e5cc/rdflib/namespace/__init__.py#L190> methods with added string checks. Has anyone else experienced this issue? I have been trying to find ways to work around/with the library to lower the latency, but haven't been able to find anything yet. Thanks, Brendan -- This email and any attachments may contain confidential and/or privileged information. If you are not the intended recipient of this message or their agent, or if this message has been addressed to you in error, please immediately alert the sender by reply email and then delete this message and any attachments. If you are not the intended recipient, you are hereby notified that any use, dissemination, copying, or storage of this message or its attachments is strictly prohibited. -- http://github.com/RDFLib --- You received this message because you are subscribed to the Google Groups "rdflib-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to rdflib-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rdflib-dev/1f616ab0-187b-4af0-aca3-13d436c6dd71n%40googlegroups.com.
