Using MariaDB with TCMalloc or jemalloc
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TCMalloc is a malloc replacement library optimized for multi-threaded usage. It also features a built-in heap debugger and profiler. You can build MariaDB with it or LD_PRELOAD it.
To build MariaDB 5.5 with TCMalloc, you need to use the following command
cmake -DCMAKE_EXE_LINKER_FLAGS='-ltcmalloc' -DWITH_SAFEMALLOC=OFF
Many other malloc replacement libraries (as well as heap debuggers and profilers) can be used with MariaDB in a similar fashion.
You can also start a standard MariaDB server with TCmalloc with:
/usr/sbin/mysqld_safe --malloc-lib=tcmalloc
or alternative just set LD_PRELOAD to point to the to be used malloc library:
export LD_PRELOAD=/path/to/library
The above procedure also works with jemalloc. Just replace tcmalloc with jemalloc in the above commands.
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