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Re: [Qemu-devel] Speed menu for GTK interfaace
From: |
Programmingkid |
Subject: |
Re: [Qemu-devel] Speed menu for GTK interfaace |
Date: |
Tue, 3 Jan 2017 11:37:00 -0500 |
On Jan 3, 2017, at 3:59 AM, Gerd Hoffmann wrote:
> On So, 2017-01-01 at 13:15 -0500, Programmingkid wrote:
>> Hello, I was wondering if you would accept a patch that added a Speed
>> menu to the GTK interface. This would allow the user to change how
>> much CPU time the emulated CPU would see.
>
> /me wonders what exactly would the menu entries do?
>
> cheers,
> Gerd
It is quite simple, there would be a 100% to a 1% menu item. It would look like
this:
Speed
-------
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
1%
Each menu item would call cpu_throttle_set(). The value sent to this function
would
be determined like this:
speed = -1 * menu_number + 100;
speed would be sent to the cpu_throttle_set() function. This function would
reduce
the CPU usage of QEMU on the host.
Why would someone want to slow down QEMU?
- The user is using a laptop and don't want it to heat up.
- The user wants to slow down a video game that is a little too challenging.
- The user wants to save energy.
- The user wants to conduct some kind of stress test on a program and see how
it handles under low cpu resources.
Hope this helps. Thank you for responding.
- [Qemu-devel] Speed menu for GTK interfaace, Programmingkid, 2017/01/01
- Re: [Qemu-devel] Speed menu for GTK interfaace, Gerd Hoffmann, 2017/01/03
- Re: [Qemu-devel] Speed menu for GTK interfaace,
Programmingkid <=
- Re: [Qemu-devel] Speed menu for GTK interfaace, Gerd Hoffmann, 2017/01/04
- Re: [Qemu-devel] Speed menu for GTK interfaace, Programmingkid, 2017/01/04
- Re: [Qemu-devel] Speed menu for GTK interfaace, Daniel P. Berrange, 2017/01/04
- Re: [Qemu-devel] Speed menu for GTK interfaace, Programmingkid, 2017/01/04
- Re: [Qemu-devel] Speed menu for GTK interfaace, Daniel P. Berrange, 2017/01/04
- Re: [Qemu-devel] Speed menu for GTK interfaace, Programmingkid, 2017/01/04
- Re: [Qemu-devel] Speed menu for GTK interfaace, Gerd Hoffmann, 2017/01/04