High CPU load with AsyncioEventLoop about urwid HOT 8 CLOSED

Has there been any movement on this issue?

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For anyone stumbling upon this issue, this Github page links to a fork that actually solves the problem without using polling at all: BouncyMaster#1

I have been using it for a while and the difference is striking: the application is responsive while keeping the CPU at zero when not in use. I recommend urwid maintainers to consider merging this code as an alternative asyncio implementation.

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Related: #86

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Oops, sorry for the duplicate.

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#86 is a related PR, but not a real fix for the issue. Repoening until we do have a fix for AsyncioEventLoop.

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I'll elaborate, I work on alot, which uses urwid. When we ported to python 3 I wanted to move from twisted to asyncio because we don't use twisted for anything except for asynchronous operations, but having the program idle at 5-10% CPU usage is pretty bad, doing nothing but switching back to twisted made that overhead go away.

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The default value of AsyncioEventLoop._idle_emulation_delay (1/256) seems small to me. I've been doing as @rndusr suggests and dial it back to about 1/15. With that everything is responsive and CPU usage is reasonable. Is there any reason not to set the default value to 1/20 or even less?

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7c8cd1e has been pushed as a workaround, as described in #86.

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