NVIDIA and XanMod CL updates

General Discussion
15

I captured the time to build the generic and trimmed kernels using 3, 7, 15, and 31 CPU cores. Previously, the generic build took ~ 43 minutes consuming 3 CPU cores. The Feb-2024 update 2 decreased the time. A trimmed build saves beaucoup time and storage utilization.

The /lib/modules/[kernel] size includes the NVIDIA driver on my machine.

Generic kernel (all modules configured in Clear config - default):

$ ./fetch-src main

$ time ./xm-build main-preempt
         3 CPUs        7 CPUs       15 CPUs       31 CPUs
real   41m35.725s    19m 5.350s    10m 5.097s     6m10.755s
user  112m 7.095s   114m12.451s   117m40.371s   127m55.995s
sys     9m38.373s     9m49.154s    10m39.254s    12m 2.763s

$ ls -lh rpmbuild.main/RPMS/x86_64/
total 106M
  ...  71M Feb 15 15:31 linux-xmmain-preempt-6.6.16-133.x86_64.rpm
  ... 109K Feb 15 15:31 linux-xmmain-preempt-cpio-6.6.16-133.x86_64.rpm
  ...  16M Feb 15 15:31 linux-xmmain-preempt-dev-6.6.16-133.x86_64.rpm
  ...  20M Feb 15 15:31 linux-xmmain-preempt-extra-6.6.16-133.x86_64.rpm
  ...  55K Feb 15 15:31 linux-xmmain-preempt-license-6.6.16-133.x86_64.rpm

$ ./xm-install main-preempt
$ du -sh /lib/modules/6.6.16-133.xmmain-preempt/
456M  /lib/modules/6.6.16-133.xmmain-preempt/

Trimmed kernel (only the modules you have running; LOCALMODCONFIG=1):

$ time LOCALMODCONFIG=1 ./xm-build main-preempt
         3 CPUs        7 CPUs       15 CPUs       31 CPUs
real   10m 0.565s     4m54.692s     2m52.431s     1m59.312s
user   26m25.156s    26m49.352s    27m31.223s    29m44.517s
sys     2m 3.640s     2m 6.321s     2m13.948s     2m28.507s

$ ls -lh rpmbuild.main/RPMS/x86_64/
total 51M
  ... 16M Feb 15 15:42 linux-xmmain-preempt-6.6.16-133.x86_64.rpm
  ... 89K Feb 15 15:42 linux-xmmain-preempt-cpio-6.6.16-133.x86_64.rpm
  ... 16M Feb 15 15:42 linux-xmmain-preempt-dev-6.6.16-133.x86_64.rpm
  ... 19M Feb 15 15:42 linux-xmmain-preempt-extra-6.6.16-133.x86_64.rpm
  ... 55K Feb 15 15:42 linux-xmmain-preempt-license-6.6.16-133.x86_64.rpm

$ ./xm-install main-preempt
$ du -sh /lib/modules/6.6.16-133.xmmain-preempt/
190M  /lib/modules/6.6.16-133.xmmain-preempt/

Indeed, what a time saver! :slight_smile: Some aspect of the build process consumes one CPU core, but mostly parallel. Clock speed decreases when consuming more CPU cores.