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Ticket Resolution Summary Owner Reporter
#19230 invalid [bug?] WinRAR x86 is a lot slower in VM than on RAW hardware Artem S. Tashkinov
Description

I'm not sure whether it's an actual bug report or an observation. If you believe it's how it's meant to be, please close this bug report.

Host: any x86-64 OS (verified on Intel Core i5 2500 and Ryzen 7 3700X). Guest: any i686/32bit Windows OS (I believe Windows 64 is as slow) App: WinRAR x86 (probably x86-64 as well) : https://www.rarlab.com/rar/wrar580.exe

So, when I run WinRAR built-in performance benchmark on my raw hardware I get roughly 3000KB/sec.

In a Windows 10 x86 host (APIC: on, four CPU cores) I get around 2000KB/sec or around 2150 with Paravirtualization set to Hyper V. In a Windows XP SP3 x86 (APIC: off, a single CPU core) host I get around 2200KB/sec.

So, the highest performance among these three scenarios is just 73% of the performance of the host PC.

WinRAR built-in performance benchmark mostly uses CPU and RAM. It does not render that much aside from a single number/counter on the screen.

This is not a regression because it's been like that for as long as I remember. I wonder if VBox can be optimized for such apps.

Linux KVM and VMWare WorkStation generally achieve a much higher emulation speed in this scenario.

#19229 fixed VirtualBox Extension Pack 6.1.2 setup dont work => fixed Sesimbra
Description

The "Extension Pack 6.1.2" cannot be added or removed. The corresponding window for the setup hangs.

#19228 duplicate VirtualBox 6.1.2 Oracle VM VirtualBox Extension Pack never finishes install goldenrod
Description

I just loaded VirtualBox 6.1.2 on the most recent version of Windows 10 as an upgrade and attempted to install the extension pack. The "loading" graphic never completes many minutes later, and the executable does not show CPU activity sufficient to register in task manager. I have had to kill the process 3 times, and did a repair reload of VirtualBox 6.1.2 once. This all occurs prior to instituting the VM.

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