Re: Slow icon update on first view of explorer folder

Simon Large wrote:
> Hi folks,
>
> Not sure if this is normal expected behaviour. When I open a versioned
> folder for the first time, the overlays trickle through the page. It's
> quite a fast trickle, perhaps 30-40 icons per second, but with a lot
> of items in a folder, e.g. doc/source/en/dug it can take a couple of
> seconds. If I navigate away and come back to the folder the overlay
> drawing is instant. This occurs even if I start explorer and leave the
> PC idle for 5 minutes to allow any background scanning to complete.
>
> This is certainly not badly slow, but I remember a similar behaviour a
> few years ago, perhaps during 1.2 or 1.3 development and in that
> instance it was due to a bug. I'm assuming this is related to
> TSVNCache somehow, but I thought it scanned working copies in the
> background rather than waiting until they are accessed the first time.

That slowdown is from explorer itself. Depending on how many items are
shown in explorer, it starts a different thread which then asks for and
draws the overlays. But that thread isn't very fast since it doesn't
have priority.

Stefan

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