Initial startup delay in 3.2g -- why?
Ned Konz
ned at bike-nomad.com
Wed Apr 3 00:03:30 UTC 2002
On Tuesday 02 April 2002 03:07 pm, John M McIntosh wrote:
> >I've been trying to figure out why stock 3.2g images take about 3 seconds
> > to start processing events (you can see this most easily by watching
> > Squeaky's eyes as you move the mouse, or by clicking on text and looking
> > for the highlight/cursor).
> >
> >With the same VM, the 3.0 images don't exhibit this delay.
> >
> >I see the same delay if I turn sound off in the image.
> >
> >Any suggestions? I don't really feel like using gdb today.
>
> Mm you could put a print to transcript, or collect the ms clock
> somewhere in
> SystemDictionary>>processStartUpList:
Did that, and found the problem...
99.4% {3270ms} AutoStart class>>startUp
Most of that is here:
50.9% {1675ms} AutoStart class>>checkForUpdates
|31.0% {1020ms} HTTPClient class>>determineIfRunningInBrowser
| |31.0% {1020ms} StandardFileStream class>>isRunningAsBrowserPlugin
| | 31.0% {1020ms} StandardFileStream>>waitBrowserReadyFor:ifFail:
| | 31.0% {1020ms} Delay>>wait
|19.9% {655ms} PasteUpMorph>>install
| 19.9% {655ms} PasteUpMorph>>displayWorldSafely
and here:
48.5% {1596ms} AutoStart class>>checkForPluginUpdate
29.2% {961ms} HTTPClient class>>determineIfRunningInBrowser
|29.2% {961ms} StandardFileStream class>>isRunningAsBrowserPlugin
| 29.2% {961ms} StandardFileStream>>waitBrowserReadyFor:ifFail:
| 29.2% {961ms} Delay>>wait
19.3% {635ms} PasteUpMorph>>install
18.7% {615ms} PasteUpMorph>>displayWorldSafely
So, some questions:
1. Why do we have to ask twice (spending a second each time) whether
we're running in the browser when we have a global to record that fact?
2. Why do we call PasteUpMorph>>install twice (for 650msec each time)?
It looks like we could save about 1.5 seconds if we just did each once.
And then:
3. Isn't there a faster way (under Unix at least) to see if we're running in
the browser environment? Like an environment variable or something?
Can't the plugin code set a global?
--
Ned Konz
currently: Stanwood, WA
email: ned at bike-nomad.com
homepage: http://bike-nomad.com
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