Episode 84 of The Linux Podcast with Fexingo dives into ZRAM — the Linux kernel module that compresses memory pages in RAM itself, reducing swap disk I/O and boosting performance, especially on systems with limited memory. Lucas and Luna explore how ZRAM works, its trade-offs compared to traditional swap, and a real-world case: Google's Chrome OS, which has used ZRAM by default since 2013. They explain the compression algorithms (LZ4, ZSTD), the impact on laptop battery life, and why server administrators are now adopting ZRAM for high-density cloud VMs. By the end, you'll understand why ZRAM is a hidden linchpin in modern Linux memory management.

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