Public bug reported:
All three different ways of specifying concurrency level
cd /usr/src/linux-x.x.x
export CONCURRENCY_LEVEL=16
make-kpkg --initrd --jobs 16 buildpackage
make-kpkg --initrd -j 16 buildpackage
make-kpkg --initrd -j16 buildpackage # not in man page, but common for GNU
make
don't show any parallelization which comes close to 5 % of the usual
effect such a value for the `CONCURRENCY_LEVEL` has, i.e. I've
experienced with all projects I've compiled so far with `-j16` option
specified that all CPU cores are used 100 % during > 90 % of the time of
the build, i.e. rarly more than 50 % usage of 1 or 2 cores. With `make-
kpkg` I see for 5 minutes the same effect like when I omit the `-j`
option. I make the 100 % usage experience with
-Computer-
Processor : 8x Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
Memory : 16291MB (1409MB used)
Operating System : Ubuntu 14.04.1 LTS
-SCSI Disks-
ATA ST1000LM014-1EJ1
experienced with make-kpkg 12.036+nmu3 on Ubuntu 14.04.1.
** Affects: kernel-package (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
All three different ways of specifying concurrency level
- cd /usr/src/linux-x.x.x
- make-kpkg --initrd --jobs 16 buildpackage
- make-kpkg --initrd -j 16 buildpackage
- make-kpkg --initrd -j16 buildpackage # not in man page, but common for
GNU make
+ cd /usr/src/linux-x.x.x
+ export CONCURRENCY_LEVEL=16
+ make-kpkg --initrd --jobs 16 buildpackage
+ make-kpkg --initrd -j 16 buildpackage
+ make-kpkg --initrd -j16 buildpackage # not in man page, but common for
GNU make
don't show any parallelization which comes close to 5 % of the usual
effect such a value for the `CONCURRENCY_LEVEL` has, i.e. I've
experienced with all projects I've compiled so far with `-j16` option
specified that all CPU cores are used 100 % during > 90 % of the time of
- the build. With `make-kpkg` I see for 5 minutes the same effect like
- when I omit the `-j` option. I make the 100 % usage experience with
+ the build, i.e. rarly more than 50 % usage of 1 or 2 cores. With `make-
+ kpkg` I see for 5 minutes the same effect like when I omit the `-j`
+ option. I make the 100 % usage experience with
- -Computer-
- Processor : 8x Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
- Memory : 16291MB (1409MB used)
- Operating System : Ubuntu 14.04.1 LTS
- -SCSI Disks-
- ATA ST1000LM014-1EJ1
+ -Computer-
+ Processor : 8x Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
+ Memory : 16291MB (1409MB used)
+ Operating System : Ubuntu 14.04.1 LTS
+ -SCSI Disks-
+ ATA ST1000LM014-1EJ1
experienced with make-kpkg 12.036+nmu3 on Ubuntu 14.04.1.
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https://bugs.launchpad.net/bugs/1366613
Title:
-j<N>, -j <N> and --jobs <N> not recognized
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