How many bits tinyLFU uses to count access frequency?

[Millione]

I found the explanation difference between code comments and README. It confuses me.

ristretto/policy.go

Lines 366 to 374 in 3177d9c

	// tinyLFU is an admission helper that keeps track of access frequency using
	// tiny (4-bit) counters in the form of a count-min sketch.
	// tinyLFU is NOT thread safe.
	type tinyLFU struct {
	freq *cmSketch
	door *z.Bloom
	incrs int64
	resetAt int64
	}

ristretto/README.md

Line 19 in 3177d9c

* **Admission: TinyLFU** - extra performance with little memory overhead (12 bits per counter).

[all-seeing-code]

Hi @Millione Thanks for highlighting, we will take a look at this. Looks like a mismatch between the implementation and the docs. I have added it to our internal tracker, we will update you here. Thanks!