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Quad Core Host -- should I assign 2 cores to a VM
Hi there
I can't quite work out whether I should assign 2 cores out of a 4 core processor (AMD OPTERON X3421 APU} to a VM running a fairly intensive DB system (MiniSAP or SAP ABAP 7.50 minisap) which has to run on a Linux machine - so I've got it on a Centos VM.
This application is accessed via a front end GUI on a Windows Host which doesn't do much apart from some email, and EXCEL so the VM actually needs in theory to have the resources.
I 'm using Physical HDD's for the SAP DB in the VM. I can't run the VM basically as HOST on this machine as I can't get hold of any AHCI / SATA Linux drivers (yet) for this machine and the standard drivers use a HIDEOUS "Fake RAID" system with lousy performance so I've skipped that.
The windows host simply boots the boot loader from an INTERNAL USB 2 device (/boot on the USB card) which then loads the rest of the OS on to an SSD which works fine.
I assume that when the VM is idle the cpu cores are available to the Host but I don't know. As far as RAM is concerned -- I have plenty in the machine but new VM software only reserves RAM in use and releases it when not required so the RAM setting is for MAX that the VM can reserve.
so VM has for physical devices 1 SSD for the OS and 1 2.7 TB for databases etc.
appreciate any input from gurus here --I can muck about with VM's but things like cpu cores etc is where my knowledge is light.
Here's the CPU data the VM sees
Cheers
jimbo
Last edited by jimbo45; 13 Dec 2017 at 07:19.