On Tue, Sep 24, 2013 at 11:50:16AM +0200, Karsten Blees wrote:
> Tests can be reproduced with 'time echo "perfhash[map] <method> 1000" | 
> ./test-hashmap', see test-hashmap.c for definition of method flags.

So I'm still curious about the actual performance improvements for git.
I runned git describe on the linux kernel with both the old hashmap and
this new one:

With old hashmap
================
iveqy@minilla:/srv/slask/linux$ time ../git/git describe
v3.12-rc2-83-g4b97280

real    0m0.236s
user    0m0.216s
sys     0m0.020s
iveqy@minilla:/srv/slask/linux$ time ../git/git describe
v3.12-rc2-83-g4b97280

real    0m0.236s
user    0m0.220s
sys     0m0.016s
iveqy@minilla:/srv/slask/linux$ time ../git/git describe
v3.12-rc2-83-g4b97280

real    0m0.236s
user    0m0.212s
sys     0m0.024s

With new hashmap
================
iveqy@minilla:/srv/slask/linux$ time ../git/git describe
v3.12-rc2-83-g4b97280

real    0m0.236s
user    0m0.216s
sys     0m0.020s
iveqy@minilla:/srv/slask/linux$ time ../git/git describe
v3.12-rc2-83-g4b97280

real    0m0.235s
user    0m0.216s
sys     0m0.020s
iveqy@minilla:/srv/slask/linux$ time ../git/git describe
v3.12-rc2-83-g4b97280

real    0m0.235s
user    0m0.208s
sys     0m0.028s


I can't see any improvements at all here. What do I miss? Am I running
git describe in the wrong way? Does linux.git have too few tags to be
important?

-- 
Med vänliga hälsningar
Fredrik Gustafsson

tel: 0733-608274
e-post: iv...@iveqy.com
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