very slow startup time of CSHTML5

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Sesztak
Posts: 172
Joined: Fri Jun 24, 2016 2:19 am

very slow startup time of CSHTML5

Postby Sesztak » Wed Oct 19, 2016 9:50 am

Dear JS-Support,

We hade a huge performance problem with startup time of our CSHTML5 app:

We would like to know that it is a bug or an expected "performance" ?

Background:
Let's see the numbers -see the attched CSHTML5 Timer Fired JSIL Browser.js 15.41sec.jpg:
-The whole test page cold startup time takes approx. 19 sec.
-the main performance bottle neck is a Scripting time: 18.6 sec.
-within that it takes 15.41 sec the Timer Fired , JSIL.Browser.js !!


So, it some part what we do not understand:
-the number of DOM elements is high (based on Simulator): 2343 !! (which is strange as the whole XAML is no more than 700 (short) lines !): how it is possible ?
-is this normal, that JSIL.Browser.js takes more than 15 secundums with scripting ?
-what is the exact meaning of JSIL.Browser.js ?

Is there any way : tips or tricks to speed up the start up time of a relative simple CSHTML5 app ?
(apart to set ScrollViewer to Visible as we did: I mean we never us Auto)

Is there any better performance profiler tool (better than Chrome build in by F12) what you can advise to pinpoint the bottleneck in more details ?

Really waiting for your kind help,
Thanks in advance,
Best regards,

Péter
Attachments
CSHTML5 Timer Fired JSIL Browser.js 15.41sec.jpg
CSHTML5 Timer Fired JSIL Browser.js 15.41sec.jpg (218.33 KiB) Viewed 387 times

JS-Support
Site Admin
Posts: 664
Joined: Tue Apr 08, 2014 3:42 pm

Re: very slow startup time of CSHTML5

Postby JS-Support » Thu Oct 20, 2016 2:06 am

Dear Péter,

- We are working on performance improvement right now. Please expect significant performance gains in the coming weeks.

- JSIL Browser.js: I think it is misleading: even though it appears to come from this file, the slowness is likely elsewhere.

- To make it easier to pinpoint the cause of the slowness, we are adding to the upcoming Beta 10.2 some new performance profiling tools to measure how much time is spent in each portion of the code by manually adding performance counters between the lines. Please stay tuned in the coming days for details.

Thanks.
Regards,
JS-Support

Sesztak
Posts: 172
Joined: Fri Jun 24, 2016 2:19 am

Re: very slow startup time of CSHTML5

Postby Sesztak » Thu Oct 20, 2016 2:13 am

Thanks for your kind reply : Great News !
really looking forward .. !!

br,
Péter


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