On Wed, Jan 03, 2018 at 03:11:02PM +1000, Arjen Lentz wrote:
https://www.theregister.co.uk/2018/01/02/intel_cpu_design_flaw/
A nuisance indeed, most hosted VMs will be impacted - with the % performance loss, companies may need to scale up or out additionally, incurring extra cost. This won't create happiness.
it won't be too big a deal if you have another VM host (AMD, or an Intel running the patched kernel) to live-migrate running instances to. then reboot (or replace) the machine when it has no VMs left running on it...and start live-migrating some or all of the VMs back to it. migration is still likely to breach any contract requiring five-9s or better uptime, unless the VMs are running off shared storage like iscsi or drbd (the bulk of the time required for a live-migration is saving the current state and copying the VM's disk images). A good VM hosting service should, IMO, already by set up for this kind of HA live migration anyway. craig -- craig sanders <cas@taz.net.au>