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Aggressive Low Memory Booster For The Linux Kernel

Linux Kernel

Published on 20 January 2013 11:30 AM EST
Written by Michael Larabel in Linux Kernel
36 Comments

Last week on the Linux kernel mailing list was a proposal for an Aggressive Low Memory Booster. This is potentially an interesting feature for Linux systems with limited amounts of RAM.

A developer from Samsung India, Pintu Kumar, proposed introducing an "Aggressive Low Memory Booster" feature for the Linux kernel to boost the available free memory of the system when under extreme memory pressure, which should particularly benefit embedded Linux devices with limited amounts of RAM.

The Aggressive Low Memory Booster would come into action once the available system memory falls below a certain threshold, a user-space programming passing the amount of required memory to be reclaimed, manually through a sysfs interface, using a new kernel ioctl, a new system call, or during CMA to reclaim/shrink a CMA region.

This Aggressive Low Memory Booster work comes one year after the same developer was working on shrink_all_memory from user-space.

It appears that the Samsung developer has now worked out the Aggressive Low Memory Booster feature for the Linux kernel per this mailing list message. Unfortunately though not too many more details are known at this time nor is there any patch-set / Git repository, likely just as an oversight in the original posting, given Samsung's kindness to the Linux kernel in the past and their other contributions. Hopefully more details will be learned soon about the Aggressive Low Memory Booster.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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