[Libre-soc-dev] W-TinyLFU cache admission policy

Jacob Lifshay programmerjake at gmail.com
Mon Sep 6 03:53:12 BST 2021

On Sun, Sep 5, 2021, 19:40 lkcl <luke.leighton at gmail.com> wrote:

> On September 6, 2021 1:36:55 AM UTC, Jacob Lifshay <
> programmerjake at gmail.com> wrote:
> >I found this interesting paper:
> >https://arxiv.org/abs/1512.00727
> >Those caching policies are designed for stuff like disk caching, or
> >caching
> >web pages, but they are worth checking out for use as a cpu caching
> >policy
> >for L2 (and maybe L1) caches.
> gate latency for L1 when TLBs are involved are ridiculously tight.
> curious to see if it would meet timing.

it's a policy for what to do on a cache miss, so potentially taking an
extra cycle during cache miss to achieve a much higher hit rate is usually
a good trade-off


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