Hello All,

I am looking for a solution to speed up live migration.

Instances where ram is used heavily like java application servers, live migration take a long time (more than 20 minutes for 8GB ram instance) and converge mode is already set to True in nova.conf.

I also tried with post_copy but it does not change.

After the first live migration (very solow) if I try to migrate again it is very fast.

I presume the first migration is slow because memory fragmentation when an instance is running on the same compute node for a long time.

I am looking for a solution considering the on my computing node I can have