prelockd
ksm_preload
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| prelockd | ksm_preload | |
|---|---|---|
| 6 | 1 | |
| 100 | 53 | |
| - | - | |
| 2.5 | 10.0 | |
| 6 months ago | about 6 years ago | |
| Python | C | |
| MIT License | GNU General Public License v3.0 only |
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prelockd
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Linuxatemyram.com
This may or may not preserve your desktop and other important applications in an OOM situation. https://github.com/hakavlad/prelockd
- force specific program to use ram instead of swap as much as possible?
- Looking for better scheduler for high core system
- Can someone explain me why do DEs crash like any other application?
- Prelockd
- Amazon 46.50% with 4.79% runtime slowdown using proactive memory reclaim
ksm_preload
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Linuxatemyram.com
Same page merging only works for KVM, as that's the only case that enables it without intervention that nothing else supports. It's MADVISE for everything non-KVM, and no applications are compiled with support for telling the kernel "hey, it's OK to dedupe me". The only way to get KSM to work with userspace applications is to use LD_PRELOAD to inject the necessary bits (https://github.com/unbrice/ksm_preload) or to use a custom kernel that has a patch and extra daemon to globally enable KSM for everything (https://codeberg.org/pf-kernel/uksmd).
I really wish this was a standard, configurable sysctl. There are many container environments (and heck, even browsers) that would benefit from this, and I cannot see any real downside.
What are some alternatives?
nohang - A sophisticated low memory handler for Linux
wsl-drop-cache - Periodically drop the WSL caches when load is low.
le9-patch - [PATCH] mm: Protect the working set under memory pressure to prevent thrashing, avoid high latency and prevent livelock in near-OOM conditions
earlyoom - earlyoom - Early OOM Daemon for Linux
memavaild - Improve responsiveness during heavy swapping: keep amount of available memory
mio - Cross-platform C++11 header-only library for memory mapped file IO
vmtouch - Portable file system cache diagnostics and control
pf-kernel