From: Andi Kleen <a...@linux.intel.com>
autofdo create_gcov uses a lot of memory for large sample files.
Since gcc runs quite long the sample files generated during
the bootstrap are fairly ig.
Currently I can't even build make autoprofiledbootstrap on my system at
home because create_gcov needs more than 12GB and runs out of memory.
This should probably be fixed in create_gcov, but for now
lowering the sampling rate works well enough for me. The bootstrap
run is long enough that it gets good enough data in any case.
gcc/:
2019-01-14 Andi Kleen <a...@linux.intel.com>
* Makefile.in: Lower autofdo sampling rate by 10x.
* Makefile.tpl: Dito.
---
Makefile.in | 2 +-
Makefile.tpl | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/Makefile.in b/Makefile.in
index aa41730528a..28539a45372 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -387,7 +387,7 @@ MAKEINFO = @MAKEINFO@
EXPECT = @EXPECT@
RUNTEST = @RUNTEST@
-AUTO_PROFILE = gcc-auto-profile -c 1000000
+AUTO_PROFILE = gcc-auto-profile -c 10000000
# This just becomes part of the MAKEINFO definition passed down to
# sub-makes. It lets flags be given on the command line while still
diff --git a/Makefile.tpl b/Makefile.tpl
index 1ab65ac8ec4..126296fb49a 100644
--- a/Makefile.tpl
+++ b/Makefile.tpl
@@ -390,7 +390,7 @@ MAKEINFO = @MAKEINFO@
EXPECT = @EXPECT@
RUNTEST = @RUNTEST@
-AUTO_PROFILE = gcc-auto-profile -c 1000000
+AUTO_PROFILE = gcc-auto-profile -c 10000000
# This just becomes part of the MAKEINFO definition passed down to
# sub-makes. It lets flags be given on the command line while still
--
2.19.1
