I'm not sure about the fastest macbook disk access, but even with NVMe storage I've found lz4 to be faster than the disk. That is (it's hard to say this exactly correct) compressed content gets read/written FASTER than uncompressed content because fewer bytes need to transit the disk interface and the CPU is able to compress/decompress significantly faster than data is able to go through whatever disk bus you've got.

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fpoling 4 hours ago | parent [-]

On my 2 years old ThinkPad laptop SSD is faster than lz4. On a fat EC2 server lz4 is faster. So one really has to test a particular config.

	▲	colechristensen 3 hours ago \| parent [-]
		Yeah, I'm not surprised the PCIe 5.0 transfer speeds matched with top tier SSD chips win that race. It still bothers me that the fastest most performant computer I have access to is almost always my laptop, and that by a considerable margin. Someone should do some lz4 vs. ssd benchmarks across hardware to make my argument more solid and the boundaries clear.