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: iveqy@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html