On 3/1/22 06:31, Patrick O'Callaghan wrote:
On Mon, 2022-02-28 at 18:26 -0500, Robert McBroom via users wrote:
On 2/28/22 08:56, Tom Horsley wrote:
On Mon, 28 Feb 2022 00:21:30 -0500 Robert McBroom via users wrote:
With 4 processors and 2G response is atrocious.
Make sure you are using proper virtual disk and network drivers. If you installed it with some sort of emulated IDE disk, it will definitely have the effect of making performance horrible. Also the disk cache mode has an extreme effect on performance. I forget which cache mode it was, but one of them dropped disk I/O about 98% slower when I was testing them. _______________________________________________
Exploring the use of VM's. Fairly plain install of CentOS8. Understood that Fedora server installed the VM structure. Where would one see alternate drivers? Networking seems to be all set up but doesn't see the router or the outside internet.
If you install the VM using virt-manager, you can check the device controller options directly. For disks and network interfaces, the "virtio" option will generally give the best performance.
As regards the network, the virt-manager defaults should just work, but for other stuff my personal notes say this:
Libvirt creates VMs in the libvirt firewall zone, so services must be added there: For NFS: # firewall-cmd --add-service mountd --zone=libvirt # firewall-cmd --permanent --add-service mountd --zone=libvirt # firewall-cmd --add-service nfs --zone=libvirt # firewall-cmd --permanent --add-service nfs --zone=libvirt # firewall-cmd --add-service nfs3 --zone=libvirt # firewall-cmd --permanent --add-service nfs3 --zone=libvirt # firewall-cmd --add-service rpc-bind --zone=libvirt # firewall-cmd --permanent --add-service rpc-bind --zone=libvirt For Samba: # firewall-cmd --add-service samba --zone=libvirt # firewall-cmd --permanent --add-service samba --zone=libvirt # firewall-cmd --add-service samba-client --zone=libvirt # firewall-cmd --permanent --add-service samba-client --zone=libvirtpoc _______________________________________________
Installed from iso with virt-manager. The install used virtio. Not using samba or nfs but added firewall commands anyway.
I can ping devices on the local network but can't get to the internet. 50 to 60% drops on the pings. Fully updated F35 server edition on host.