#1404 avp service may eat too much cpu when watching live stream media.
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Rejected
Reproduction steps:
I and other guy found the problem about a month ago, try to report the problem vis tech support, but it is too slow and low efficiency, still the problem can not be identified.
The problem is that Kaspersky may consume too much cpu when I watch live stream media using Chrome.
https://www.huya.com/ is a chinese Live website, recently I discover that sometimes kaspersky will eat about 30% cpu when I watch video using chrome. Reproduction is not always successfull, but it is highly likely to reprodcue when visit some hot branch, such as this one,https://www.huya.com/kpl
When reproduced, you can see that chrome and avp service completely consume all cpu resources... and the live will hang.
I uploaded many data to tech support, but still there is not even a bug ID.
Since the problem can still be reproduced when updated to patch C, I choose to report here also.
steps to collect data
1 already completely disable paging file, there is no virtual memory at all
2 Run xperf -on base+cswitch+compact_cswitch+dispatcher+fileio -stackwalk profile+cswitch+readythread -buffersize 1024 in cmd to start performance data collection.
3 start chrome and watch stream media
4 avp service quickly consume about 30% cpu
5 Run xperf -d C:\trace.etl
6 turn on kaspersky product traces and reproduce again, collect traces
7 reproduce again, collect avp process dump.
data that I can provide,
Xperf collection, traces, avp dump, screenshot.
https://c-t.work/s/f41da0821aea48
the link is more convenient for me to upload large data, but it has time limit. will expire in 167hours.
please download it quickly. thank you
System Settings
Operating system: Win 10, x64
System: DELL XPS13 9380
Product: KTS
Product Version: 2020 MR0
Language: en-US
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you can try reproduce it.
use chrome and watch Huya. choose a hot room, like KPL, LPL.......
I know little about programming and those basic things.
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Actually, I believe I can give you enough data but the difficulty is knowing what is really matter........
If I can though my laptop to your office, it would be much easiler.....
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@xzz123 said in avp service may eat too much cpu when watching live stream media\.:
there still even no bug ID.
now you have it - 3494862.
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@xzz123 said in avp service may eat too much cpu when watching live stream media\.:
I dont know
I do the test that disable those drivers. If klwtp is disabled, the problem is gone( of course once the driver is disabled, webAV is stoped). If you disable other driver, there is still the problem.
You may find the answer if you ask huang1111
he do the test of disabling protections..... that is the first time we are requested by the tech support.
my driver test was the second time....tech support want more...
Hi,
klwtp is an web transmission processor driver I think. It takes a lot of research to figure out what the player is doing on media stream. Because there are many players that use flash technology, it's the only one that's causing problems, and there must be something special about it.
Best regards.
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@xzz123 said in avp service may eat too much cpu when watching live stream media\.:
https://www.huya.com/
Hi, guy
I find huya use flash technology to build its live player. Perhaps the product has a performance impact when dealing with flash streaming media. Take a look at action script and see what the player is doing.
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I dont know
I do the test that disable those drivers. If klwtp is disabled, the problem is gone( of course once the driver is disabled, webAV is stoped). If you disable other driver, there is still the problem.
You may find the answer if you ask huang1111
he do the test of disabling protections..... that is the first time we are requested by the tech support.
my driver test was the second time....tech support want more...
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@xzz123 said in avp service may eat too much cpu when watching live stream media\.:
Frankly speaking, I believe that those tough and long barriers between dev and users cause the very long period which it takes to fix a localization problem.
Tech support always asking us provide tons of data again and again, after months, there still even no bug ID. Maybe, the problem is still not confirmed yet.........
Dont know what to do now.
Be patient, Guy.
You are always the best. 
Take it easy.
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Frankly speaking, I believe that those tough and long barriers between dev and users cause the very long period which it takes to fix a localization problem.
Tech support always asking us provide tons of data again and again, after months, there still even no bug ID. Maybe, the problem is still not confirmed yet.........
Dont know what to do now.
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That is correct. But the problem still persist in patch
Tried to get it fix, but still no solution
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In fact, it has been so short for more than a month, and it has been reported a month ago. So far, the development team has not found the problem.Technical support The dump files, trace files, and performance tool logs we collected have been uploaded several times, but there is still no way to determine the problem.Yesterday when logging in to the live broadcast platform, Kaspersky prompted: "Detected invalid certificate SSL connection", I don't know if it helps the problem.
