Upgrading to 64 KB Page Size

Purpose

Reduce the translation lookaside buffer (TLB) overhead, memory fragmentation, and I/Os to improve performance.

Preparations

Obtain the openEuler 22.03 LTS SP3 64 KB kernel RPM package: kernel-64kb-5.10.0-182.0.0.95.oe2203sp3.aarch64.rpm.

Procedure

1. Install the RPM package.

   rpm -ivh kernel-64kb-5.10.0-182.0.0.95.oe2203sp3.aarch64.rpm --force

   You can safely ignore the following errors displayed during the installation process.

   

2. Set the 64 KB kernel as the default boot option.

   grubby --set-default-index=0

3. Stop ClickHouse.

   clickhouse stop

   

4. Restart the system.

   reboot

5. Check the kernel after the restart.

   uname -a

6. Enable transparent huge pages after the restart.

   echo madvise > /sys/kernel/mm/transparent_hugepage/enabled