How To – Steve Scargall

How To Monitor Persistent Memory Performance on Linux using PCM, Prometheus, and Grafana

In a previous article, I showed How To Install Prometheus and Grafana on Fedora Server. This article demonstrates how to use the open-source Process Counter Monitor (PCM) utility to collect DRAM and Intel® Optane™ Persistent Memory statistics, and visualize the...

September 16, 2021

How To Linux Performance Troubleshooting

Using ltrace to see what ipmctl and ndctl are doing

Occasionally, it is necessary to debug commands that are slow. Or you may simply be interested in learning how the tools work. While there are many strategies, here are some simple methods that show code flow and timing information. To...

June 23, 2021

How To

How To Install and Boot Microsoft Hyper-V 2019 from Persistent Memory (or not)

In a previous post I described how to install and boot Fedora Linux using only Persistent Memory, no SSDs are required. For this follow on post, I attempted to install Microsoft Windows Server 2022 onto the persistent memory. TL;DR – I was...

June 17, 2021

How To

How To Install and Boot Microsoft Windows Server 2022 from Persistent Memory (or not)

June 17, 2021

How To

How To Install and Boot Microsoft Windows Server 2019 from Persistent Memory

June 14, 2021

How To

How To Install and Boot VMWare VSphere/ESXi from Persistent Memory (or not)

In a previous post I described how to install and boot Linux using only Persistent Memory, no SSDs are required. For this follow on post, I attempted to install VMWare VSphere/ESXi v7.0u2 onto the persistent memory. TL;DR – It doesn’t...

June 7, 2021

How to Boot Linux from Intel® Optane™ Persistent Memory

How To Linux

How to Boot Linux from Intel® Optane™ Persistent Memory

Introduction In this article, I will demonstrate how to configure a system with Intel Optane Persistent Memory (PMem) and use part of the PMem as a boot device. This little known feature can reduce boot times for those that need...

June 7, 2021

How to build an upstream Fedora Kernel from source

How To Linux

How to build an upstream Fedora Kernel from source

I typically keep my Fedora system current, updating it once every week or two. More recently, I wanted to test the Idle Page Tracking feature, but this wasn’t enabled in the default kernel provided by Fedora. To enable the feature,...

September 14, 2020

Linux Device Mapper WriteCache (dm-writecache) performance improvements in Linux Kernel 5.8

How To Linux

Linux Device Mapper WriteCache (dm-writecache) performance improvements in Linux Kernel 5.8

The Linux ‘dm-writecache’ target allows for writeback caching of newly written data to an SSD or NVMe using persistent memory will achieve much better performance in Linux Kernel 5.8. Red Hat developer Mikulas Patocka has been working to enhance the...

May 30, 2020

How To Troubleshooting

How To Enable Debug Logging in ipmctl

The ipmctl utility is used for configuring and managing Intel Optane Persistent Memory modules (DCPMM/PMem). It supports the functionality to: Discover Persistent Memory on the serverProvision the persistent memory configurationView and update the firmware on the persistent memory modulesConfigure data-at-rest...

May 29, 2020

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Category: How To

How To Monitor Persistent Memory Performance on Linux using PCM, Prometheus, and Grafana

Using ltrace to see what ipmctl and ndctl are doing

How To Install and Boot Microsoft Hyper-V 2019 from Persistent Memory (or not)