From 39001007390a699265f16da47474d2b112118931 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 20 Jun 2011 15:41:01 -0700 Subject: [PATCH] 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 --- INSTALL | 13 +++++++++++++ 1 file changed, 13 insertions(+) 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: -- 2.30.2