Books


Some recommended reading for software designers, developers, mentors and team members.

Link Collections

Software Projects and Dev Ops

Organizational Structure

Personal Improvement

Usability

Software Project Books (2005 and earlier)

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Understanding your WSL2 RAM and swap - Changing the default 50%-25%

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The Windows Subsystem for Linux operates as a virtual machine that can dynamically grow the amount of RAM to a maximum set at startup time.  Microsoft sets a default maximum RAM available to 50% of the physical memory and a swap-space that is 1/4 of the maximum WSL RAM.  You can scale those numbers up or down to allocate more or less RAM to the Linux instance. The first drawing shows the default WSL memory and swap space sizing. The images below show a developer machine that is running a dev environment in WSL2 and Docker Desktop.  Docker Desktop has two of its own WSL modules that need to be accounted for.  You can see that the memory would actually be oversubscribed, 3 x 50% if every VM used its maximum memory.  The actual amount of memory used is significantly smaller allowing every piece to fit. Click to Enlarge The second drawing shows the memory allocation on my 64GB laptop. WSL Linux defaults to a maximum RAM size of 5
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Accelerate Storage Spaces with SSDs in Windows 10 Storage Pool tiers

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Create Storage Spaces in Windows 10 Windows Server O/S contains Storage Spaces support for Server Spaces tiered storage. You can front slower spinning disks with smaller faster SSDs. Windows 10 has a Storage Spaces GUI Control Panel that does not include the tiered storage GUI. This means Powershell must be used for all configuration. https://github.com/freemansoft/win10-storage-spaces  contains scripts that create tiered storage pools that integrate SSDs as caching drives and HDDs as storage drives. They assume you have at least one SSD and one HDD. The scripts automatically find all raw drives and add them to the pool. Some HDDs have their types incorrectly identified. The script can coerce them to be MediaType:HDD The entire virtual drive is added to the system as a single large volume You need at least 1 SSD and 1 HDD to run cached storage / Simple resiliency 2 SSD and 2 HDD to run cached storage / Mirror resiliency / 1 SSD and 2 HDD to run cached storage / Simple re
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