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L1 cache (ram cache) only without L2 cache (SSD)

Posted: Thu Oct 29, 2020 5:46 pm
by syednasir
Any benefits of just setting L1 cache (ram cache) only to cache SSDs and HDDs?

Re: L1 cache (ram cache) only without L2 cache (SSD)

Posted: Fri Oct 30, 2020 4:52 am
by Jaga
If you have enough ram for a large L1 cache, you can even cache NVMe drives effectively. I have a 30GB L1 on my 1TB NVMe boot drive which is less than half full, and get great hit rates if I consistently use the same software/game(s).

If the size of your L1 cache is less than 10% of the total data to be cached on the target drive, your hitrates start to suffer (unless you really focus on only one piece of software).