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 > > Cheers, > > Tom >
