TinyLFU for NVMCache

[pbhandar2]

Hello,

Am I correct to understand that we cannot use TinyLFU for NVMCache admission? It is only available as a
replacement policy for the DRAM cache.

If so, why is this the case? Is TinyLFU not efficient to use in NVMCache?

Pranav

[pbhandar2]

I think it is because TinyLFU would require per page statistics and CacheLib using 16MB region size in the
NVMCache? Also when tier-1 item is being evicted, it is being written to a clean region, not necessarily evicting anything; so there is no comparison to be made of an item being admitted and evicted. I wanted to make sure I am not misunderstanding.

[haowu14]

I answered part of this in #191. Let's move the discussion over there.