High CPU while downloading a big file from MEGA

[harlan4096]

<p><strong>Reproduction steps:</strong></p>
<p><span>No special steps to reproduce, just open Mozilla Firefox and download a big size file from MEGA service.</span></p>
<p><span></span></p>
<p><strong>Actual result:</strong></p>
<p><span>High CPU (~100%) during the download until the process finishes...</span></p>
<p><span></span></p>
<p><strong><img src="https://cloud.qainfo.ru/index.php/apps/files_sharing/ajax/publicpreview.php?x=1647&amp;y=528&amp;a=true&amp;file=ME1.png&amp;t=hUhBkfeamP8QtKN&amp;scalingup=0" alt="" width="948" height="528" /></strong></p>
<p><span></span></p>
<p><span><img src="https://cloud.qainfo.ru/index.php/apps/files_sharing/ajax/publicpreview.php?x=1647&amp;y=528&amp;a=true&amp;file=ME2.png&amp;t=bp1USkSOXz9Wqt3&amp;scalingup=0" alt="" width="893" height="528" /></span></p>
<p><span></span></p>
<p><span><img src="https://cloud.qainfo.ru/index.php/apps/files_sharing/ajax/publicpreview.php?x=1647&amp;y=528&amp;a=true&amp;file=ME3.png&amp;t=3XUy4eG5hsAbRk2&amp;scalingup=0" alt="" width="863" height="52" /></span></p>

[Jarvis]

Hello! please reproduce with xperf traces

[harlan4096]

<p>Here You are: <a href="https://cloud.qainfo.ru/s/2gcfPUFJQdOZ2Ap" target="_blank" rel="noopener">https://cloud.qainfo.ru/s/2gcfPUFJQdOZ2Ap</a></p>
<p></p>
<p>I collected xperf traces only for the 1st 1,5GB downloaded...</p>

[Dmitriy.Pisarets]

<p>@harlan4096 said in <a href="/post/9913" target="_blank" rel="noopener">High CPU while downloading a big file from MEGA</a>:</p>
<blockquote>
<p>Here You are: <a href="https://cloud.qainfo.ru/s/2gcfPUFJQdOZ2Ap" target="_blank" rel="noopener">https://cloud.qainfo.ru/s/2gcfPUFJQdOZ2Ap</a></p>
<p></p>
<p>I collected xperf traces only for the 1st 1,5GB downloaded...</p>
</blockquote>
<p>Hello! can you please try reproduce it with xperf traces in two ways</p>
<ul>
<li>with our product</li>
<li>without product</li>
</ul>
<p>As developers can see - 2/3 of memory is taken by Firefox</p>
<p></p>

[harlan4096]

<p>Do You mean to test ina system with KTS2021 with protection paused or in a different system without any Kaspersky product installed?</p>

[Dmitriy.Pisarets]

<p>@harlan4096 hi, if you can do 3 scenarios - it will be great. Or you can check with active and pause protection </p>

[harlan4096]

<p><strong>* Xperf Traces + KTS2021MR1 Protection On:</strong> https://cloud.qainfo.ru/s/RBJLGvu7AUfueg0</p>
<p></p>
<p><strong>* Xperf Traces + KTS2021MR1 Protection Off + Exited:</strong> https://cloud.qainfo.ru/s/Lwfp3I1dN4VMhK4</p>
<p></p>
<p>In this case I got a "saw chart in % consumption" when with Protection is On the CPU consumption remains constantly at 100% during the download:</p>
<p></p>
<p><img src="https://cloud.qainfo.ru/index.php/apps/files_sharing/ajax/publicpreview.php?x=1647&amp;y=528&amp;a=true&amp;file=PAUSED%2520%252B%2520EXITED.png&amp;t=I5wmSLIjToqGDYL&amp;scalingup=0" alt="" width="893" height="528" /></p>
<p></p>
<p></p>
<p><strong>* Third senary coming soon, since I have to uninstall completely KTS2021MR1 from this system to collect the traces...</strong></p>
<p></p>

[harlan4096]

<ul>
<li><strong> Xperf Traces (same system) without KTS2021MR1 installed: </strong><a href="https://cloud.qainfo.ru/s/nTOUUvyPaFdiLUD" target="_blank" rel="noopener">https://cloud.qainfo.ru/s/nTOUUvyPaFdiLUD </a></li>
</ul>
<p></p>
<p><img src="https://cloud.qainfo.ru/index.php/apps/files_sharing/ajax/publicpreview.php?x=1647&amp;y=528&amp;a=true&amp;file=WITHOUT%2520KTS2021MR1.png&amp;t=tSLX2IMW1xl2geb&amp;scalingup=0" alt="" width="893" height="528" /></p>

[Dmitriy.Pisarets]

<p>@harlan4096 said in <a href="/post/10031" target="_blank" rel="noopener">High CPU while downloading a big file from MEGA</a>:</p>
<blockquote>https://cloud.qainfo.ru/s/Lwfp3I1dN4VMhK4</blockquote>
<p>thx!</p>