User using HOST command a lot?

top - 14:37:11 up 126 days,  6:36,  1 user,  load average: 5.01, 4.80, 4.85
Tasks: 321 total,   1 running, 319 sleeping,   1 stopped,   0 zombie
Cpu(s):  6.0%us,  3.3%sy,  0.0%ni, 70.7%id, 18.0%wa,  0.6%hi,  1.5%si,  0.0%st
Mem:  16038704k total, 15904508k used,   134196k free,  1000712k buffers
Swap:  2097136k total,   310428k used,  1786708k free, 12229524k cached

    PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                                                        
1043498 colyn     20   0 3062m  11m  988 S 17.6  0.1   0:34.00 host
Would anyone know wht the user colyn is using the command host, and why that site is using so much CPU?


Staff member
Apr 11, 2011
Hello :)

The "host" command is used for DNS lookups. Have you contacted the user to see if they have a specific reason for using this command?

Thank you.