Message 338871 - Python tracker (original) (raw)

Attached is a minimal reproducer script which is sufficient to show the issue clearly.

It is a simple single-thread Tkinter program with one canvas. No multiprocessing, no shared variables, no connections between instances. Instructions at top of file.

Results on i7-6700HQ, 4-core (8 thread), 2.60GHz, 16GB, Windows 10:-

1 process running alone:             29k objects/sec
6 processes running concurrently:    4.3k objects/sec each, = 25.8k objects/sec combined.

Conclusion: One-core performance, global system-wide lock.