Set number of threads when auto compiling kernel

Asked Jan 24 '23 at 10:34

Active Jan 24 '23 at 10:41

Viewed 135 times

I use Ubuntu as main operating system.

I have found that when a new kernel is included in a system upgrade, during the upgrade, certain kernel-related items are compiled (kernel modules?).

During this process, I check that the processor usage is low, as it is making use of 1 single processor thread.

With multicore technologies available today, is there any way to set that, every time there is a kernel update, all the cores of the system can be used in such compilations? Or at least be able to decide the number of cores desired for the compilation.

Thanks.

edited Jan 24 '23 at 10:41

asked Jan 24 '23 at 10:34

Ommadawn

2

[Perhaps this Q&A at AskUbuntu answers this?](https://askubuntu.com/questions/534661/how-to-parallelize-dpkg-for-large-dkms-packages) – vidarlo Jan 24 '23 at 10:55
Yes, I will try! Thanks – Ommadawn Jan 24 '23 at 11:17
Nop... it doesn't work. I apply this yesterday. Today there was a kernel update and my system just used 1 thread to compile the modules :( – Ommadawn Jan 25 '23 at 08:09
Was the environment variable correctly set? Remember that `sudo` by default clears environment variables, so you'd have to use `sudo CONCURRENCY_LEVEL='16' apt upgrade` – vidarlo Jan 25 '23 at 09:53
I wrote `export CONCURRENCY_LEVEL=8` in `/etc/profile` so it was defined in the environment variables at startup – Ommadawn Jan 25 '23 at 09:58
`sudo` will reset it afaik. – vidarlo Jan 25 '23 at 10:04
What will be reset? – Ommadawn Jan 25 '23 at 10:10
1

By default `sudo` resets all environment variables to mitigate some security concerns. – vidarlo Jan 25 '23 at 10:38

Set number of threads when auto compiling kernel

0 Answers0