What are these
$ ps aux | grep flush root 710 0.0 0.0 0 0 ? S 2012 2:29 [flush-202:1] root 10732 6.2 0.0 0 0 ? S Apr14 453:33 [flush-202:80] ubuntu 24009 0.0 0.0 8080 900 pts/3 S+ 06:26 0:00 grep --color=auto flush
I notice that the
flush-202:80 process often jumps to the top of
top. This is on Ubuntu Server 12.04 running Apache, MySQL, and Solr processes. Googling the subject I found another SF post which mentions that these processes should never consume much CPU. The solution presented in that post mentions to reboot the system, which is exactly how I came to poke around in
top and discover the processes in the first place: the system won't reboot.