[$] Improving control over transparent huge page use
Date:
Tue, 05 Aug 2025 16:15:30 +0000
Description:
The use of huge pages can significantly increase the performance of many workloads by reducing both memory-management overhead in the kernel and pressure on the system's translation lookaside buffer (TLB). The addition
of transparent huge pages (THP) for the 2.6.38 kernel release in 2011
caused the kernel to allocate huge pages automatically to make their
benefits available to all workloads without any effort needed on the
user-space side. But it turns out that use of huge pages can make some workloads slower as the result of internal memory fragmentation, so the THP feature is often disabled. Two patch sets aimed at better targeting the
use of transparent huge pages are currently working their way through the review process.
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Link to news story:
https://lwn.net/Articles/1032199/
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