Re: [Xen-devel] Measuring migration downtime

[Anthony Liguori <aliguori@xxxxxxxxxx>]

Arun Babu wrote:
> Hi,
>  I need to get the exact downtime for doing a live migration with ms 
> precision.
>  (I am not bothered about whole migration time which is close to 1 
> minute.. I need to measure
>  the live migration downtime during which the DomU is out of service.. 
> the figure quoted in the xen
>  documentation says it as ~60 ms..  )
>  I hope someone must have tried to measure this before.
If you run a benchmark against the server, and measure the server's 
throughput at a high granularity and graph it, it should show you the 
interval that it was down for.  I think that is the most realistic way 
to do this.
Regards,

Anthony Liguori

>  Can you suggest me ideas to measure this?
>
> Thank you,
> Arun
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