Subject: Re: [Census] So who uses git?

From: Radoslaw Szkodzinski <[email-masked]>
Date: Tue, 31 Jan 2006 20:50:50 +0100

Radoslaw Szkodzinski wrote:
> Cloning without -l option is much slower - some minutes vs below a minute.
> I could have time(8)d it, but it's no use.
> 

Make that time(1)d.

Results for the kernel follow. Disc cache has been preheated with find.

git version: 5b2bcc7b2d546c636f79490655b3347acc91d17f
Filesystem: ext3 data=writeback
Kernel: 2.6.16-rc1-astorm2 (mostly -ck patchset with "hotfix")
Elevator: CFQ

time git clone linux-2.6.git linux-2.6.git.new
Packing 180025 objects

real    8m31.637s
user    3m19.571s
sys     0m42.211s

Extremely bad. The task is mostly cpu-bound.
Made some background applications swap out late in the process.
(that's the cause of the sys time)

time git clone -l linux-2.6.git linux-2.6.git.local
0 blocks

real    0m42.339s
user    0m2.818s
sys     0m4.040s

Good enough for me. Possibly cp -rl of objects and then a checkout.

time cp -rl linux-2.6.git linux-2.6.git.rl

real    0m18.333s
user    0m0.103s
sys     0m1.732s

Really fast, but requires additional file modification.
(namely .git/remotes/origin, removal of gitrc)
Also incompatible with apps having problems with hardlinks.

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