1. 查看coredump配置
sysctl -a | grep core
或者ulimit -c
2. 设置coredump文件占用空间大小
ulimit -c unlimited
对于守护进程，需要在/etc/profile中增加如下命令：
ulimit -c unlimited > /dev/null 2>&1
3. 设置coredump文件存储位置以及文件名格式
sysctl -w kernel.core_pattern=/home/core/core.%e.%p
或者修改文件：
echo ‘/home/core/core.%e.%p‘ > /proc/sys/kernel/core_pattern
4. core_pattern参数说明
%% A single % character
%p PID of dumped process
%u real UID of dumped process
%g real GID of dumped process
%s number of signal causing dump
%t time of dump (seconds since 0:00h, 1 Jan 1970)
%h hostname (same as ’nodename’ returned by uname(2))
%e executable filename
原文：http://www.cnblogs.com/aurora-s/p/5098197.html