Blog Posts

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

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.

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

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.

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How to build an upstream Fedora Kernel from source

How to build an upstream Fedora Kernel from source

I typically keep my Fedora system current, updating it once every week or two.

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

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.

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"ipmctl show -memoryresources" returns "Error: GetMemoryResourcesInfo Failed"

"ipmctl show -memoryresources" returns "Error: GetMemoryResourcesInfo Failed"

Issue: Running ipmctl show -memoryresources returns an error similar to the following:

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Intel Optane Persistent Memory Modules report "Non-functional" state in ipmctl

Issue Executing ipmctl show-dimm to get device information shows the persistent memory modules in a ‘Non-functional’ health state, eg:

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How To Set Linux CPU Scaling Governor to Max Performance

How To Set Linux CPU Scaling Governor to Max Performance

The majority of modern processors are capable of operating in a number of different clock frequency and voltage configurations, often referred to as Operating Performance Points or P-states (in ACPI terminology).

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How To Verify Linux Kernel Support for Persistent Memory

How To Verify Linux Kernel Support for Persistent Memory

Linux Kernel support for persistent memory was first delivered in version 4.

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