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We can see lots wait event about "CMCC task waiting for...".

What is CMCC full represent? Maybe.....Cluster Memory Consistency Check?

Any Url talk talk about  ASE CE CMCC?


Former Member

I'm not sure exactly how the wording breaks out if CMCC is an acronym.

In the ASE source code, CMCC is related to something called the Cluster Cache Coherency Manager.  This is what maintains coherency of pages in memory in the shared disk cluster.
In a SMP server there is only one copy of a page in memory. However in a shared disk cluster there can be multiple copies of the page (At most one in each node).  Updates need to be propagated to all copies of the page efficiently.

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