[yocto-autobuilder-helper][dunfell 3/3] config.json: set max load in PARALLEL_MAKE


Steve Sakoman
 

From: Trevor Gamblin <trevor.gamblin@windriver.com>

Add "-l 52" to PARALLEL_MAKE in config.json to limit Make and Ninja
builds based on the detected system load. With this option added, if
either tool has at least one job running and detects that the system
load exceeds the given value, it will wait until either the system load
average drops below that limit, or until all other jobs are finished
before starting additional jobs.

Since most autobuilder machines have 56 cores, this should help keep the
system from being overloaded during builds.

Reference: https://www.gnu.org/software/make/manual/html_node/Parallel.html

Signed-off-by: Trevor Gamblin <trevor.gamblin@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 5c5fc7bcd221427d34bbac80c9bad315fb6de4df)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
---
config.json | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config.json b/config.json
index fa475e3..cbb0f5b 100644
--- a/config.json
+++ b/config.json
@@ -43,7 +43,7 @@
"PREMIRRORS = ''",
"BB_GENERATE_MIRROR_TARBALLS = '1'",
"BB_NUMBER_THREADS = '16'",
- "PARALLEL_MAKE = '-j 16'",
+ "PARALLEL_MAKE = '-j 16 -l 52'",
"XZ_MEMLIMIT = '5%'",
"XZ_THREADS = '8'",
"BB_TASK_NICE_LEVEL = '5'",
--
2.25.1