[ProgClub programming] top: st : time stolen from this vm by the hypervisor

Roland Turner roland at rolandturner.com
Fri Jun 7 15:18:30 AEST 2019

On 7/6/19 12:34 pm, Jedd Rashbrooke wrote:
> On Fri, 7 Jun 2019 at 12:49, Roland Turner via programming 
> <programming at progclub.org <mailto:programming at progclub.org>> wrote:
>     $ aws ec2 create-snapshot --volume-id {id}
>     This eliminates:
>       * The I/O cost
>       * The network traffic
>       * CPU use by rsync on the source host
>       * The existence of the backup host (depending what else it's doing)
> Nice.  Similar to my earlier suggestion to attach EBS and dump to that 
> - which provides 3/4 of these advantages, and still requires a little 
> API work.
>  Recovery is easier / faster , I'd suggest, as EBS disks can be 
> reattached to whatever EC2 instance you want, and then either rsync'd 
> or run directly from.

There are several ways to skin the cat, certainly. Snapshotting does 
introduce a convert-to-volume delay during restoration, but assuming 
that this is a less than once-per-year event this seems immaterial.

- Raz

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