[libvirt-users] CPU and Memory requirements for host OS ( CentOS 7.6) on Dell Poweredge R630 server

[Sven Schwedas]

That depends on what you plan on doing with the host. IIRC live VM
migrations use host CPU time, and depending on transport can use quite a
bit of CPU (for encryption/compression). Same with storage, if you have
a ZFS/btrfs/LVM2/RAID/encryption setup that requires a lot of CPU,
that's also counted against host CPU time.

libvirtd itself doesn't need all that much resources for itself, that
said. 2 cores and 2GB RAM should suffice as baseline? Plus whatever you
need to meet above needs, if any apply.

On 26.08.19 20:02, Kaushal Shriyan wrote:
> Hi,
> 
> I am running Dell R630 Poweredge 1U with 32 cores vCPU's and 96 GB
> RAM. What should be the minimum numbers of CPU cores and memory that
> should be reserved for host OS (CentOS 7.6) and the remaining CPU
> cores and memory resources to be allocated for Guest OS?
> 
> I look forward to hearing from you and thanks in advance.
> 
> Best Regards,
> 
> Kaushal
> 
> 
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> libvirt-users at redhat.com
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-- 
Mit freundlichen Grüßen, / Best Regards,
Sven Schwedas, Systemadministrator
✉ sven.schwedas at tao.at | ☎ +43 680 301 7167
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