CODEWITHSUNDEEP
linux-kernel
SMA
SMA

Reputation: 453

Change kernel time frequency

I want to rebuild the Linux kernel with changing the time frequency to 1000 Hz. Can anyone provide me a reference or the instruction to do so. the current Linux kernel version is (using ubuntu):

4.4.0-83-generic

Upvotes: 1

Views: 706

Answers (1)

Circuitsoft
Circuitsoft

Reputation: 78

It's easy enough to download sources. You can actually, on ubuntu, run:

apt-get source linux-image-amd64-4.4.0-83-generic
apt-get build-dep linux-image-amd64-4.4.0-83-generic

The first command will download the source for that kernel (to the current directory); the second will install all packages needed to build it. When that's done, enter the linux-image folder, and

zcat /proc/config.gz > .config

This will get the currently-running kernel config into this build area. Finally, make menuconfig

will open a text-based menu system. Press / to search, and find HZ. Browse to the setting, press <Enter> to open it, and select 1000. Exit out, saving the config, then make bzImage modules -j9 to build the kernel (replacing 9 with one more than your CPU core/thread count for speed).

make install will put the kernel and modules into /boot and /lib/modules/kernel_name_and_version respectively.

Upvotes: 1

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