Blog Posts

How To Map a CXL Endpoint to a CPU Socket in Linux

How To Map a CXL Endpoint to a CPU Socket in Linux

When working with CXL Type 3 Memory Expander endpoints, it’s nice to know which CPU Socket owns the root complex for the endpoint.

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Linux NUMA Distances Explained

Linux NUMA Distances Explained

TL;DR: The memory latency distances between a node and itself is normalized to 10 (1.

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Using Linux Kernel Memory Tiering

Using Linux Kernel Memory Tiering

In this post, I’ll discuss what memory tiering is, why we need it, and how to use the memory tiering feature available in the mainline v5.

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How To map VMWare vSphere/ESXi PMem devices from the Host to Guest VM

How To map VMWare vSphere/ESXi PMem devices from the Host to Guest VM

In this post, we’ll use VMWare ESXi 7.0u3 to create a Guest VM running Ubuntu 21.

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How To Emulate CXL Devices using KVM and QEMU

How To Emulate CXL Devices using KVM and QEMU

What is CXL? Compute Express Link (CXL) is an open standard for high-speed central processing unit-to-device and CPU-to-memory connections, designed for high-performance data center computers.

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How To Build a custom Linux Kernel to test Data Access Monitor (DAMON)

How To Build a custom Linux Kernel to test Data Access Monitor (DAMON)

DAMON is a data access monitoring framework subsystem for the Linux kernel.

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Resolving commands 'Killed' on GCP f1-micro Compute Engine instances

Resolving commands 'Killed' on GCP f1-micro Compute Engine instances

When I want to perform a quick task, I generally spin up a Google GCP Compute Engine instance as they’re cheap.

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How To Enable Debug Logging in ipmctl

How To Enable Debug Logging in ipmctl

The ipmctl utility is used for configuring and managing Intel Optane Persistent Memory modules (DCPMM/PMem).

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