On Mon, Aug 1, 2011 at 11:07 PM, Tom Gundersen <[email protected]> wrote: > In case it is not clear: the only imortant number is the "kernel" > time. In which gzip/lzop are the clear winners. > > On Mon, Aug 1, 2011 at 11:05 PM, Tom Gundersen <[email protected]> wrote: >> Hi guys, >> >> We have a lot of compression options now for mkinitcpio, so I figured >> I'd try to measure which one gives us the fastest boot. I guess boot >> speed is the most important metric when deciding which one to choose. >> >> The measurements were done on an Lenovo ThinkPad x60, with an Intel >> Core 2 processor and an 5400 rpm HDD, so your milage might obviously >> vary. >> >> Here are my numbers: >> >> xz >> Startup finished in 710ms (kernel) + 2526ms (initrd) + 14335ms >> (userspace) = 17572ms >> Startup finished in 610ms (kernel) + 2448ms (initrd) + 48159ms >> (userspace) = 51218ms >> Startup finished in 710ms (kernel) + 2458ms (initrd) + 11294ms >> (userspace) = 14462ms >> Startup finished in 720ms (kernel) + 2488ms (initrd) + 12271ms >> (userspace) = 15480ms >> Startup finished in 710ms (kernel) + 2446ms (initrd) + 9602ms >> (userspace) = 12758ms >> >> gzip >> Startup finished in 560ms (kernel) + 2422ms (initrd) + 9917ms >> (userspace) = 12899ms >> Startup finished in 560ms (kernel) + 2445ms (initrd) + 9734ms >> (userspace) = 12740ms >> Startup finished in 560ms (kernel) + 2451ms (initrd) + 10544ms >> (userspace) = 13556ms >> Startup finished in 560ms (kernel) + 2427ms (initrd) + 9756ms >> (userspace) = 12744ms >> Startup finished in 570ms (kernel) + 2439ms (initrd) + 9823ms >> (userspace) = 12832ms >> >> bzip2 >> Startup finished in 810ms (kernel) + 2428ms (initrd) + 9690ms >> (userspace) = 12928ms >> Startup finished in 810ms (kernel) + 2448ms (initrd) + 9635ms >> (userspace) = 12893ms >> Startup finished in 810ms (kernel) + 2504ms (initrd) + 10212ms >> (userspace) = 13526ms >> Startup finished in 810ms (kernel) + 2445ms (initrd) + 8838ms >> (userspace) = 12094ms >> Startup finished in 820ms (kernel) + 2438ms (initrd) + 9613ms >> (userspace) = 12871ms >> >> lzma >> Startup finished in 790ms (kernel) + 2441ms (initrd) + 9335ms >> (userspace) = 12567ms >> Startup finished in 790ms (kernel) + 2442ms (initrd) + 9662ms >> (userspace) = 12895ms >> Startup finished in 770ms (kernel) + 2432ms (initrd) + 10199ms >> (userspace) = 13401ms >> Startup finished in 770ms (kernel) + 2425ms (initrd) + 9922ms >> (userspace) = 13117ms >> Startup finished in 770ms (kernel) + 2435ms (initrd) + 9502ms >> (userspace) = 12708ms >> >> lzop >> Startup finished in 550ms (kernel) + 2461ms (initrd) + 10730ms >> (userspace) = 13742ms >> Startup finished in 570ms (kernel) + 2421ms (initrd) + 20680ms >> (userspace) = 23671ms >> Startup finished in 550ms (kernel) + 2435ms (initrd) + 8752ms >> (userspace) = 11738ms >> Startup finished in 570ms (kernel) + 2454ms (initrd) + 9575ms >> (userspace) = 12600ms >> Startup finished in 550ms (kernel) + 2453ms (initrd) + 8540ms >> (userspace) = 11543ms
Interresting! Thanks -- Sébastien Luttringer www.seblu.net
