[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] how to change Xen scheduler and enable the XM-FLASK in case Xen is not compiled from the source?
On 7/11/19 6:10 AM, tee as wrote: Hello everyone, first, i am new to xen so maybe my questions might sound uninteresting but i am still learning :). I have installed xen using this method: https://wiki.xenproject.org/wiki/Xen_Project_Beginners_Guide and not compiling it from the source (i tried multiple times but i got errors while compiling the kernel). To change the scheduler, I read that i have to pass this command sched=credit2 to the hypervisor at boottime and to enable FLASK i have to modify .config file and set XSM_ENABLE and FLASK_ENABLE to "y" My questions are : - Is there a difference between the method i used for installing xen and compiling it fromn the sources? I did not compile xen in the method i used. Modifying the .config file only makes a difference when compiling from source. This describes the purpose of .config if you want to understand more: https://www.linuxjournal.com/content/kbuild-linux-kernel-build-system flask is almost certainly not enabled already, but you should be able to check for support by running 'sudo xl flask'. - How to change the scheduler and enable XM-FLASK, while i am using the installation in the link? credit2 is supposedly the default in some versions, such as 4.12 for example. https://xenbits.xenproject.org/docs/4.12-testing/features/sched_credit2.html You can check the current scheduler by looking at 'xen_scheduler' in the output of 'sudo xl info'. If the scheduler is not sched2, assuming you're using Debian, look at https://wiki.debian.org/Xen#Other_configuration_tweaks - In case this is not possible, can anyone guide me on how to instal it from the source and give me the right kernel? If you already have a distribution kernel that works with Xen, you should be able to use it as-is. For Xen, try https://wiki.xenproject.org/wiki/Compiling_Xen_From_Source and let us know. --Sarah _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-users
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