overcommit专题

启动redis提醒WARNING overcommit_memory is set to 0!Background save may fail under low memory condition.

前言 本人在Centos7服务器上启动redis,报如下问题: WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add ‘vm.overcommit_memory = 1’ to /etc/sysctl.conf and the

linux memory overcommit机制--------笔记

前言: overcommit 机制介绍: 一个问题引发的对overcommit的思考: 问题背景: 问题: 问题分析: 问题的原因: 解决方案: 前言: linux的虚拟内存支持overcommit(过度使用) 本文就fork子进程时"fork: Cannot allocate memory" 错误展开分析,解释其原因,并给出解决方法. overcommit 机制介绍:

redis安装与初探,WARNING overcommit_memory is set to 0!

环境:Ubuntu 14.04.4 LTS 安装: apt-get install redis-server 我这边安装没出现什么问题 运行 redis-server 两个警告出来了 1.Warning: no config file specified, using the default config. In order to specify a config file use

linux mem overcommit

linux overcommit 机制会欺骗进程,承诺分配给他的内存空间,只有当这些page被真正touch到的时候才通过缺页机制拿到真正的物理内存。 以下摘自kernel doc The Linux kernel supports the following overcommit handling modes0 - Heuristic overcommit handling. Obviou