apache coredump

# mkdir /tmp/coredump
# chown www /tmp/coredump

# vi httpd.conf
CoreDumpDirectory /tmp/coredump

# sysctl kern.sugid_coredump=1 
kern.sugid_coredump: 0 -> 1

# /usr/local/apache2/bin/apachectl restart

(参考)
http://sarface2012.hatenablog.com/entries/2010/10/27
http://digape.com/201204/php-php5-4-apache-2-4%E3%81%A7segmentation-fault/