1483462 - Kaspersky Internet Security doesnt play well with WR

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect, P5)

Description

[Mayank Bansal]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0
Build ID: 20180814220344

Steps to reproduce:

Win10x64, 8gb RAM, Intel HD5500 mobile iGPU

Use nightly with WR in normal browsing


Actual results:

Kaspersky increases scanning while opening new tabs, scrolling etc
And since WR scrolling is not async enough, pages stutter while scrolling. 

And it makes profiling WR a mess, because you never know ho much is KIS affecing the samples.


Expected results:

Make KIS respect WR's authoritah

Comment 1

[Jeff Muizelaar [:jrmuizel]]

Can you get a profile of this happening? How many cores do you have in the system in question?

Comment 2

[Mayank Bansal]

Attachment: aboutsupport.txt

Comment 3

[Mayank Bansal]

(In reply to Jeff Muizelaar [:jrmuizel] from comment #1)
> How many cores do you have in the system in question?

It is a 2C/4T mobile intel Broadwell processor.


>> Can you get a profile of this happening?

This happens all the time, really. Last 2-3 bugs that i filed here are all a symptom of this, I think.
This typically happens when new tabs are opened in background, and you scroll in the foreground. Or video is played in the foreground. 

Could be a interaction between intel drivers, kaspersky, sandboxing ..
If I disable KIS, then the inbuilt Windows Defender goes crazy, and starts hogging the CPU. So have to keep KIS enabled.
non-WR is also affected, but to a lesses extent. A possible reason that i can think of is because non-WR scrolling appears to be more async.

Scrolling nightly generally feels jankier with WR+ Kaspersky. And strangely, if I restart Nightly, Kaspersky sometimes leaves it alone for a while. 


see also bug 1482600
I have disabled WR on nightlies for now.

Comment 4

[Jeff Muizelaar [:jrmuizel]]

Here's a profile from the other bug. https://perfht.ml/2w7pBgJ

Comment 5

[Mayank Bansal]

I have a SSD, so high disk use hile scanning is not a problem
So from what i understand, when KIS will scan a running application, the application will perform slowly. Somewhat like KIS is doing a "synchronous scan", that hampers the application speed.

Comment 7

[Jeff Muizelaar [:jrmuizel]]

P4 for the same reasons as in bug 1482441

Comment 8

[Mayank Bansal]

Cant repro anymore