安裝Redis 2.8.18時報錯：
zmalloc.h:50:31: error: jemalloc/jemalloc.h: No such file or directory
zmalloc.h:55:2: error: #error "Newer version of jemalloc required"
make[1]: *** [adlist.o] Error 1
make[1]: Leaving directory `/data0/src/redis-2.6.2/src'
make: *** [all] Error 2
在README 有這個一段話。
Allocator
---------
Selecting a non-default memory allocator when building Redis is done by setting
the `MALLOC` environment variable. Redis is compiled and linked against libc
malloc by default, with the exception of jemalloc being the default on Linux
systems. This default was picked because jemalloc has proven to have fewer
fragmentation problems than libc malloc.
To force compiling against libc malloc, use:
% make MALLOC=libc
To compile against jemalloc on Mac OS X systems, use:
% make MALLOC=jemalloc
說關於分配器allocator， 如果有MALLOC 這個 環境變量， 會有用這個環境變量的 去建立Redis。
而且libc 並不是默認的 分配器， 默認的是 jemalloc, 因為 jemalloc 被證明 有更少的 fragmentation problems 比libc。
但是如果你又沒有jemalloc 而只有 libc 當然 make 出錯。 所以加這麼一個參數。
make MALLOC=libc
