Profiler for long-running application

[Asad Dhamani]

I have a Flask application where I run a specific task asynchronously using Celery. Its basically parsing some HTML and inserting data into a Postgres database(using SQLAlchemy). However, the task seems to be running very slowly, at 1 insert per second. 
I'd like to find out where the bottleneck is, and I've been looking for a good profiler that'd let me do this, however, I couldn't find anything. Any recommendations would be great.