Setting 64 KB Page Table

Purpose

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

Preparations

Obtain the openEuler-22.03-lts-sp3 kernel RPM package that supports 64 KB pages through the link: 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

2. Set the kernel of 64 KB page table to be started by default.

   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