[Users] migration problem urgent

[Nikita Spiridonov]

On Sun, 2016-04-24 at 14:33 +0200, Sharmin Sultana Sheuly wrote:
> 
> Hi
> My  question is :
> Is RAM size effects migration time of the containers?
> 
> 
> I set ram size of my container to 545MB by below command 
> vzctl set 102 --ram 545M --save
> 
> 2 conatainers with different RAM size (545MB and 1024MB) taken same
> amount of time (22 sec).
> 
> Why this is is happening?
> 
> Its very important and urgent for me. I posted in the forum , however
> no one replied :(. Any help will be really very appreciated
> 
> Best 
> 
> sharmin
> 
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Hello Sharmin, do you use vzmigrate with "--online" option to migrate
your containers? And which version of OpenVz you use, Vz7 or older
versions?

If you use --online option (i.e. run live migration) than most probably
only dirty pages transferred from one host to another. If CT don't use
some amount of memory it don't transfer it during migration (and blank
CT don't need much).