Network queries happen after each keystroke

[Jono Bacon]

With the new API in the PPA it seems that a network query is happening after every keystroke which causes significant lag.

To reproduce, type "Tom Hanks" into the home lens and you will see the dash repeatedly update it's results based on each keystroke.

It should impact as well local scopes.

[Nick Dedekind (nick-dedekind)]

Dash search keystroke timeout is set to 40ms which seems a bit quick. I think we could increase this to 150ms without trouble.
Perhaps we also need a bit more intelligence here we increase the timeout the more continuous input we get.

[Jono Bacon (jonobacon)]

Could we track this when the user types and ship the average keystroke speed off to the smart scopes service to auto-tune the timeout?

[Brandon Schaefer (brandontschaefer)]

I think this one could be fixed by fixing this bug first:
https://bugs.launchpad.net/unity/+bug/1158459

So keeping the timer, each keystroke should cancel the previous search which should speed things up. Cause I think the real problem with why its slow is it has a huge list of things its search, but it should only be searching 1 string ever (IMO). This is what is causing the lag, at lease what I think is causing it.

[Paweł Stołowski (stolowski)]

This has been fixed some time ago by properly using GLib.Cancellables. Closing.