How Linux Kernel Same-Page Merging Reduces Memory Costs

Lucas and Luna explore Linux Kernel Same-Page Merging (KSM), a memory deduplication technique that can reduce RAM usage by up to 60% in virtualized environments. They break down how KSM works, its trade-offs with CPU overhead, and real-world use cases like optimizing container density on a 256 GB server. The episode includes a comparison with newer approaches like userfaultfd and UFFD, and discusses KSM's role in VMware and other hypervisors. Perfect for sysadmins, DevOps engineers, and cloud architects looking to cut infrastructure costs without sacrificing performance.

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