The .tar.xz format decompresses more than twice as fast as .tar.bz2, allowing you to get up and running in no time
$ time tar xjf firefox-134.0b3.tar.bz2
real 0m9.045s
user 0m8.839s
sys 0m0.450s
$ time tar xJf firefox-135.0a1.en-US.linux-x86_64.tar.xz
real 0m4.903s
user 0m4.677s
sys 0m0.510s
Nice! Presumably it’d be twice as fast if disk was infinitely fast or something. Unfortunately by testing this I’ve already used up a hundred times more time than I’ll ever save as a result of it.
I am curious too. You tested two different versions, one beta and the other current nightly (different content). It’s okay for a quick test, but you can actually have a much closer test. Both nightly and only one day difference:
I run this quick test multiple times and on average these are typical results (don’t forget to delete the unpacked folder between each runs):
$ time tar xjf firefox-135.0a1.en-US.linux-x86_64.tar.bz2
real0m5,784s
user0m5,700s
sys 0m0,371s
$ time tar xJf firefox-135.0a1.en-US.linux-x86_64.tar.xz
real0m1,699s
user0m1,621s
sys 0m0,315s
On my system that consistently gets results around 10s and 5s so the difference is sort of interesting. Mine’s a Ryzen 3600, maybe newer CPU features are of substantial benefit to xz.
Nice! Presumably it’d be twice as fast if disk was infinitely fast or something. Unfortunately by testing this I’ve already used up a hundred times more time than I’ll ever save as a result of it.
I am curious too. You tested two different versions, one beta and the other current nightly (different content). It’s okay for a quick test, but you can actually have a much closer test. Both nightly and only one day difference:
I run this quick test multiple times and on average these are typical results (don’t forget to delete the unpacked folder between each runs):
$ time tar xjf firefox-135.0a1.en-US.linux-x86_64.tar.bz2 real 0m5,784s user 0m5,700s sys 0m0,371s $ time tar xJf firefox-135.0a1.en-US.linux-x86_64.tar.xz real 0m1,699s user 0m1,621s sys 0m0,315sOn my system that consistently gets results around 10s and 5s so the difference is sort of interesting. Mine’s a Ryzen 3600, maybe newer CPU features are of substantial benefit to xz.