From: Andi Kleen Date: Mon, 20 Jun 2011 22:41:01 +0000 (-0700) Subject: Add explanation of the profile feedback build to the README X-Git-Tag: v1.7.7-rc0~94^2 X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=39001007390a699265f16da47474d2b112118931;p=git.git Add explanation of the profile feedback build to the README Also explains that the are additional warnings. Signed-off-by: Andi Kleen Signed-off-by: Junio C Hamano --- diff --git a/INSTALL b/INSTALL index 16e45f114..bbb9d4dc9 100644 --- a/INSTALL +++ b/INSTALL @@ -25,6 +25,19 @@ set up install paths (via config.mak.autogen), so you can write instead $ make all doc ;# as yourself # make install install-doc install-html;# as root +If you're willing to trade off (much) longer build time for a later +faster git you can also do a profile feedback build with + + $ make profile-all + # make prefix=... install + +This will run the complete test suite as training workload and then +rebuild git with the generated profile feedback. This results in a git +which is a few percent faster on CPU intensive workloads. This +may be a good tradeoff for distribution packagers. + +Note that the profile feedback build stage currently generates +a lot of additional compiler warnings. Issues of note: