Why Zram Is Eating Swap's Lunch on Linux episode artwork

EPISODE · May 27, 2026 · 11 MIN

Why Zram Is Eating Swap's Lunch on Linux

from The Linux Podcast with Fexingo: Open Source Operating Systems, Distros, and Server Stack · host Fexingo

Episode 14 of The Linux Podcast with Fexingo dives into the quiet revolution in Linux memory management: Zram. Lucas explains how Zram creates a compressed block device in RAM, swapping pages before they hit disk, and why it dramatically outperforms traditional swap on SSDs for most desktop and server workloads. Luna brings up real-world benchmarks from Phoronix showing up to 40% better responsiveness under memory pressure, and the episode discusses the kernel resources Zram consumes, when to use Zswap instead, and Fedora's decision to enable it by default since version 33. A concrete, technical conversation about compression algorithms (LZ4 vs ZSTD), memory savings, and what this means for the average Linux user. No fluff, just practical systems knowledge. #Zram #LinuxMemory #SwapOnLinux #LZ4 #ZSTD #KernelCompression #Fedora #Phoronix #MemoryManagement #SSD #Zswap #Technology #OpenSource #LinuxPodcast #FexingoBusiness #BusinessPodcast #SystemsAdministration #Desktops Keep every episode free: buymeacoffee.com/fexingo

Episode 14 of The Linux Podcast with Fexingo dives into the quiet revolution in Linux memory management: Zram. Lucas explains how Zram creates a compressed block device in RAM, swapping pages before they hit disk, and why it dramatically outperforms traditional swap on SSDs for most desktop and server workloads. Luna brings up real-world benchmarks from Phoronix showing up to 40% better responsiveness under memory pressure, and the episode discusses the kernel resources Zram consumes, when to use Zswap instead, and Fedora's decision to enable it by default since version 33. A concrete, technical conversation about compression algorithms (LZ4 vs ZSTD), memory savings, and what this means for the average Linux user. No fluff, just practical systems knowledge. #Zram #LinuxMemory #SwapOnLinux #LZ4 #ZSTD #KernelCompression #Fedora #Phoronix #MemoryManagement #SSD #Zswap #Technology #OpenSource #LinuxPodcast #FexingoBusiness #BusinessPodcast #SystemsAdministration #Desktops Keep every episode free: buymeacoffee.com/fexingo

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Why Zram Is Eating Swap's Lunch on Linux

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This episode was published on May 27, 2026.

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Episode 14 of The Linux Podcast with Fexingo dives into the quiet revolution in Linux memory management: Zram. Lucas explains how Zram creates a compressed block device in RAM, swapping pages before they hit disk, and why it dramatically outperforms...

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