5.2. Hugepages Configuration for Multiple Architectures

This section outlines the steps for configuring hugepages of various sizes on different architectures, an important aspect for optimizing DPDK performance.

5.2.1. Hugepages on x86 Architecture

2MB and 1G Hugepages

• 2MB hugepages are commonly used on x86.

• 1G hugepages can improve performance for large-memory applications.

Configuring 1G Hugepages

# Example GRUB configuration for 1G hugepages
GRUB_CMDLINE_LINUX="default_hugepagesz=1G hugepagesz=1G hugepages=4"

Update GRUB and reboot after making these changes.

5.2.2. Hugepages on ARM Architecture

ARM supports a range of hugepage sizes, such as 64KB, 512KB, and 2MB.

Example Configuration

# Setting 2MB hugepages on ARM
echo N > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages

Replace ‘N’ with the number of pages needed.

5.2.3. Other Architectures

Refer to architecture-specific documentation for hugepage configurations on platforms like PowerPC or MIPS.

5.2.4. Boot-Time Reservation of Hugepages

Boot-time reservation is essential for large hugepage sizes. Modify the boot loader, such as GRUB, for this purpose:

GRUB_CMDLINE_LINUX="hugepagesz=2M hugepages=512"

Regenerate the GRUB config and reboot your system.