CPU utilization become so high this morning after migration into Exchange 2013,

Some healthy DBs is getting disccounetced with growing replay Queue length, mounted DB is no issue.

It seems that's short of CPU performance,

Are there any processes to limit or set up to reduce the load of CPU, MBX servers? It's temporary treatment...

What's the CU level you have for your Exchange 2013? Also, please check node runner processor as Node Runner process can cause CPU utilization issue. I would also suggest to check your disk IOPs as it looks like disk IOPs issue to me as well. Thanks.

That's CU6, I checked that node runner procees, and already stop MicrosoftExchange Search Host Controller to reduce the CPU utilization. Are there any other processes which should be chekced?