search

ipython / ipython

Official repository for IPython itself. Other repos in the IPython organization contain things like the website, documentation builds, etc.
https://ipython.readthedocs.org
BSD 3-Clause "New" or "Revised" License
16.31k stars 4.45k forks source link

Interactivity with media has high latency on Safari@OSX #5575

Closed michaelaye closed 2 weeks ago

michaelaye commented 10 years ago

Trying out the interactivity examples for Beat Frequencies and Image Processing, I noticed that on Safari@OSX (Mavericks all updates) the latency between using the widget and updated media is unbearably large, in the order of 5 seconds until the audio player is re-displayed and between 5 and 10 seconds until an image is shown with an updated value of RGB using the sliders. Here's my system data: MBP Retina 2012 Safari 7.0.3 Mavericks 10.9.2 IPython: 2.0.0 (5c3a5f18e)

Note that on Chrome the examples work smoothly.

minrk commented 9 years ago

The examples appear to run at several Hz for me. Can we close this one as mysteriously fixed? Or do you still see this issue, @michaelaye?

rMBP 2013 Safari 8.0.2 OS X 10.10.1 IPython master (25d6433b8c48ae7c3082870648bec7e22866616d)

michaelaye commented 9 years ago

Not really for me. Maybe they solved things in Safari 8?

See my screencast here: https://dl.dropboxusercontent.com/u/139035/beat_frequencies_widget_slowness.mov

rMBP 2012 Safari 7.1.2 OS X 10.9.5 IPython master Jan 14 (7e15d0696)

minrk commented 9 years ago

My guess is it's a performance bug in Safari 7, which isn't really something we can do anything about.

parente commented 9 years ago

FWIW, performance seems fine in Safari 8 on Yosemite:

https://dl.dropboxusercontent.com/u/264241/Safari%20-%20Beat%20Frequencies.mov