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Difference between revisions of "Tweaking Linux"
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| + | {{delete|This article only has two tweaks and could easily be merged with multiple other articles}} | ||
This article was created for Linux users to share tips and tricks with each other. | This article was created for Linux users to share tips and tricks with each other. | ||
| − | ==General tweaks | + | ==General tweaks== |
| + | |||
| + | ===Use tcmalloc/jemalloc instead of Glibc malloc=== | ||
| + | {{warning|this is NOT recommended and may cause segfaults IF your piece of software statically links a malloc implementation. Doing it on a per-program basis is safer.}} | ||
| + | |||
| + | Glibc's malloc is not as performant or scalable as tcmalloc, or even jemalloc. You can expect some small to massive performance gains[https://github.com/blog/1422-tcmalloc-and-mysql <sup>1</sup>], depending on your workload, by forcing software to use your memory allocator of choice. | ||
| + | |||
| + | To do this, use your preferred editor to create: | ||
| + | |||
| + | {{hc|/etc/ld.so.preload| | ||
| + | /usr/lib/lib*.so | ||
| + | }} | ||
| + | |||
| + | ... where * is either jemalloc, or tcmalloc. | ||
| + | |||
| + | {{tip|<nowiki>to start a program once with your preferred implementation of malloc, issue LD_PRELOAD=/usr/lib/lib*.so program using the terminal.</nowiki>}} | ||
==Xorg server== | ==Xorg server== | ||
=== Disable mouse acceleration in X === | === Disable mouse acceleration in X === | ||
In order to disable mouse acceleration use your text editor of choice to create: | In order to disable mouse acceleration use your text editor of choice to create: | ||
| − | + | ||
| − | + | {{hc|/etc/X11/xorg.conf.d/50-mouse-acceleration.conf|Section "InputClass" | |
| − | + | Identifier "My Mouse" | |
| − | + | Option "AccelerationNumerator" "1" | |
| − | + | Option "AccelerationDenominator" "1" | |
| − | + | Option "AccelerationThreshold" "0" | |
| − | + | EndSection | |
| − | + | }} | |
Your config file will take effect the next time you start X. | Your config file will take effect the next time you start X. | ||
Latest revision as of 06:49, 20 February 2022
This dongle is a 
DELETION CANDIDATE
Relevant discussion may be found on the talk page. Reason: This article only has two tweaks and could easily be merged with multiple other articlesThis article was created for Linux users to share tips and tricks with each other.
Contents
General tweaks
Use tcmalloc/jemalloc instead of Glibc malloc
Glibc's malloc is not as performant or scalable as tcmalloc, or even jemalloc. You can expect some small to massive performance gains1, depending on your workload, by forcing software to use your memory allocator of choice.
To do this, use your preferred editor to create:
/etc/ld.so.preload
/usr/lib/lib*.so
... where * is either jemalloc, or tcmalloc.
Xorg server
Disable mouse acceleration in X
In order to disable mouse acceleration use your text editor of choice to create:
/etc/X11/xorg.conf.d/50-mouse-acceleration.conf
Section "InputClass" Identifier "My Mouse" Option "AccelerationNumerator" "1" Option "AccelerationDenominator" "1" Option "AccelerationThreshold" "0" EndSection
Your config file will take effect the next time you start X.
