Re: [SSI-devel] Ability to choose a high performance of high available system

[Brian J. W. <Bri...@hp...>]

Aneesh Kumar K.V wrote:
> Hi,
> 
> Right now in OpenSSI when we migrate a particular application the entire 
> allocated data with respect to the application is taken to the node to 
> which we are migrating. That means if we have a 1GB of memory allocated 
> a lot of time will be spend in migration.
> 
> The above limitation/feature basically helps in achieving the high 
> availability. That means after migration if the origin node goes down we 
> still can continue to run on the new node to which we migrated.
> 
> But i guess we should leave that to the user. How about adding a 
> /proc/partial_migration file that will help to minimize the migration 
> time in a OpenSSI cluster ? That means pages are pulled from the origin 
> node only when we hit a page fault on the new node. This helps in 
> reducing the migration time a lot i guess. And in case i move between 
> nodes my net execution speed will be better.

Submit a feature request. This might be a good project for somebody who 
wants to practice kernel programming and contribute to OpenSSI.

Regards,

Brian