Currently OOPP plugin streams are set up synchronously (the NPP_NewStream call) and then delivered asynchronously. The NPP_NewStream call is a major source of browser jank; currently it's synchronous because we need to know whether the plugin wants the stream as a file or just as data, but that's something plugin-container could deal with all itself. I think we should try to make this all async and see what happens.
It's already done as part of async plugin init. Profiles were showing that async NPP_New wasn't enough; once we finished initializing we'd hit a wall of jank due to a bunch of NPP_NewStream calls that were queued up.
Status: NEW → RESOLVED
Last Resolved: 4 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 998863
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