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redis6.0.6编译失败的处理 0x1 make时候错误如下 server.c:5191:24: error: ‘struct redisServer’ has no member named ‘masterhost’ if (!server.masterhost) { ^ server.c:5201:19: error: ‘struct redisServer’ has no member named ‘supervised_mode’ if (server.supervised_mode == SUPERVISED_SYSTEMD) { ^ server.c:5208:15: error: ‘struct redisServer’ has no member named ‘maxmemory’ if (server.maxmemory > 0 && server.maxmemory < 1024*1024) { ^ server.c:5208:39: error: ‘struct redisServer’ has no member named ‘maxmemory’ if (server.maxmemory > 0 && server.maxmemory < 1024*1024) { ^ server.c:5209:176: error: ‘struct redisServer’ has no member named ‘maxmemory’ serverLog(LL_WARNING,"WARNING: You specified a maxmemory value that is less than 1MB (current value is %llu bytes). Are you sure this is what you really want?", server.maxmemory); ^ server.c:5212:31: error: ‘struct redisServer’ has no member named ‘server_cpulist’ redisSetCpuAffinity(server.server_cpulist); ^ server.c: In function ‘hasActiveChildProcess’: server.c:1480:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ server.c: In function ‘allPersistenceDisabled’: server.c:1486:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ server.c: In function ‘writeCommandsDeniedByDiskError’: server.c:3826:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ server.c: In function ‘iAmMaster’: server.c:5000:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ make[1]: *** [server.o] Error 1 0x2 开始以为是jemalloc版本问题，手动下载了jemalloc版本并且安装，但是仍然报错。又尝试修改内存分配器为glibc的 MALLOC=libc，结果同样报错。通过搜索后发现是gcc版本太低，高版本的编译要求！ 0x3 安装9以上的gcc yum -y install centos-release-scl yum -y install devtoolset-9-gcc devtoolset-9-gcc-c++ devtoolset-9-binutils echo "source /opt/rh/devtoolset-9/enable" >> /etc/profile 安装后最好永久写入环境变量，防止运行时也需要，也不影响默认环境
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redis的内存分配器 0x1 redis的内存分配器默认是jemalloc。需要查看的话，在启动redis显示日志是没有提示的，但是启动后登录redis的cmd，然后使用以下命令可以确认： 命令一： INFO # INFO 命令的内容有很多，但是可以关注Memory这部分，显示的提示了当前的内存分配器版本 127.0.0.1:7001> INFO ... mem_cluster_links:0 mem_aof_buffer:8 mem_allocator:jemalloc-5.2.1 active_defrag_running:0 lazyfree_pending_objects:0 lazyfreed_objects:0 ... 命令二： MEMORY MALLOC-STATS # 此命令也会显示提示内存分配器版本 127.0.0.1:7001> MEMORY MALLOC-STATS ___ Begin jemalloc statistics ___ Version: "5.2.1-0-g0" ... --- End jemalloc statistics --- 方式三：查询打开文件 # 能够显示使用的jemalloc分配器 lsof | grep redis 0x2 为什么要使用jemalloc呢，应该是性能更高吧，目前默认malloc在jvm上有可能导致内存不释放的问题
