SIGNALInfrastructure Software·Jun 15, 2026, 2:33 PMSignal50Short term

Reading /proc/filesystems Is Surprisingly Done Very Often & Now As Much As 444% Faster

Source: Phoronix

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Reading /proc/filesystems Is Surprisingly Done Very Often & Now As Much As 444% Faster

Reading /proc/filesystems for obtaining a list of file-systems supported by the running kernel is done frequently on Linux. Namely due to being read by the SELinux library (libselinux), reading of /proc/filesystems is done more often than one would typically expect and now the Linux 7.2 kernel is optimizing for it to yield much better performance...

Why this matters
Why now

This optimization arrives as Linux continues its high-frequency usage in various system components, revealing previously unnoticed performance bottlenecks.

Why it’s important

Improved kernel performance, even in seemingly minor areas, contributes to overall system efficiency, particularly for infrastructure and enterprise-level deployments where many such calls accumulate.

What changes

Linux systems, particularly those heavily relying on SELinux or frequent filesystem queries, will experience marginal but cumulative performance gains.

Winners
  • · Linux system administrators
  • · Cloud providers
  • · SELinux users
  • · Infrastructure software vendors
Losers
    Second-order effects
    Direct

    Linux 7.2 kernel will exhibit slightly improved general system responsiveness and resource utilization.

    Second

    The cumulative effect across large-scale deployments could lead to minor reductions in operational costs related to compute resources.

    Third

    This iterative optimization process highlights the continuous effort in foundational software to extract maximum efficiency, impacting future hardware requirements.

    Editorial confidence: 90 / 100 · Structural impact: 10 / 100
    Original report

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