Re: Snappy GUI response

Alan Cox <[email protected]>
Newsgroups gmane.comp.xfree86.forum
Message-ID <[email protected]>
> Hmm.. I'll try this, but I'm intentionally trying to include the time
> from the mouse click until the UI is visible. It's supposed to be the
> user-percieved time, and when the client-app receives the expose
> event, nothing is visible so the user is certainly still waiting.

The PS/2 mouse won't give you that info. Its also very slow to talk to
(milliseconds a message). With a USB mouse you can probably safely assume
that the mouse->kernel path is <= 100uS.

This btw illustrates why without figures the data is useless - I can do
context switches faster than an ISA I/O cycle. I like your synthetic
click suggestion.
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