If you decompress it to an mmaped file it'll be one of the first things written to disk under memory pressure anyways and instantly available in normal situations.
With the ever decreasing cost of flash and it's ever increasing speed relative to the CPU compression is not really worth what it used to be to startup times 10 years ago though.
With the ever decreasing cost of flash and it's ever increasing speed relative to the CPU compression is not really worth what it used to be to startup times 10 years ago though.