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Commit 1e7a791f authored by Chirayu Desai's avatar Chirayu Desai Committed by Gerrit Code Review
Browse files

envsetup: mka improvements 

Use make -j -l y instead of just make -j x
x is threads, y is 2*threads
This way make builds with the maximum number of jobs it can
while not getting the load average above y
I've tested it with 8 (x on my pc), 16, 20 and 24, and
2*threads seemed to be the most efficient

*needs more testing*

Change-Id: Ifd72e699a6fadc08442472defcc764fb91179355
parent 9adfbdd0

envsetup.sh

+11 −7
Original line number Diff line number Diff line
@@ -11,11 +11,11 @@ Invoke ". build/envsetup.sh" from your shell to add the following functions to y 
- jgrep:   Greps on all local Java files.

- resgrep: Greps on all local res/*.xml files.

- godir:   Go to the directory containing a file.

- cmremote: Add git remote for CM Gerrit Review

- cmgerrit: A Git wrapper that fetches/pushes patch from/to CM Gerrit Review

- cmrebase: Rebase a Gerrit change and push it again

- mka:      Builds using SCHED_BATCH on all processors

- reposync: Parallel repo sync using ionice and SCHED_BATCH

- cmremote: Add git remote for CM Gerrit Review.

- cmgerrit: A Git wrapper that fetches/pushes patch from/to CM Gerrit Review.

- cmrebase: Rebase a Gerrit change and push it again.

- mka:      Builds using SCHED_BATCH on all processors.

- reposync: Parallel repo sync using ionice and SCHED_BATCH.



Look at the source to view more functions. The complete list is:

EOF
@@ -1604,10 +1604,14 @@ function cmrebase() { 
function mka() {

    case `uname -s` in

        Darwin)

            make -j `sysctl hw.ncpu|cut -d" " -f2` "$@"

            local threads=`sysctl hw.ncpu|cut -d" " -f2`

            local load=`expr $threads \* 2`

            make -j -l $load  "$@"

            ;;

        *)

            schedtool -B -n 1 -e ionice -n 1 make -j `cat /proc/cpuinfo | grep "^processor" | wc -l` "$@"

            local threads=`grep "^processor" /proc/cpuinfo | wc -l`

            local load=`expr $threads \* 2`

            schedtool -B -n 1 -e ionice -n 1 make -j -l $load "$@"

            ;;

    esac

}