What is "supervise log" process?

[Fli]

Hi, i want to ask what is supervise and why these processes use quite high hard disk operations (I/O)?



at the beginning there is a TID value, so i did:

lsof -p 715088

result:

COMMAND      PID USER   FD   TYPE DEVICE SIZE/OFF       NODE NAMEsupervise 715088 root  cwd    DIR   0,23     4096    9410479 /vz/root/190/var/qmail/supervise/authlib/log
supervise 715088 root  rtd    DIR   0,23     4096    9404419 /vz/root/190
supervise 715088 root  txt    REG   0,23    20592   21824429 /vz/root/190/usr/bin/supervise
supervise 715088 root  mem    REG  253,0            21824429 /vz/root/190/usr/bin/supervise (path dev=0,23)
supervise 715088 root  mem    REG  253,0             9412749 /vz/root/190/lib64/ld-2.5.so (path dev=0,23)
supervise 715088 root  mem    REG  253,0             9412676 /vz/root/190/lib64/libc-2.5.so (path dev=0,23)
supervise 715088 root    0r  FIFO    0,6      0t0 2537404618 pipe
supervise 715088 root    1u   CHR    1,3      0t0   13277416 /vz/root/190/dev/null
supervise 715088 root    2u   CHR    1,3      0t0   13277416 /vz/root/190/dev/null
supervise 715088 root    3r  FIFO    0,6      0t0 2537404662 pipe
supervise 715088 root    4w  FIFO    0,6      0t0 2537404662 pipe
supervise 715088 root    5w   REG   0,23        0   26378334 /vz/root/190/var/qmail/supervise/authlib/log/supervise/lock
supervise 715088 root    6r  FIFO   0,23      0t0   26378335 /vz/root/190/var/qmail/supervise/authlib/log/supervise/control
supervise 715088 root    7w  FIFO   0,23      0t0   26378335 /vz/root/190/var/qmail/supervise/authlib/log/supervise/control
supervise 715088 root    8r  FIFO   0,23      0t0   26378336 /vz/root/190/var/qmail/supervise/authlib/log/supervise/ok

so it appears supervise is a qmail thing

If you run qmail or qmail-smtpd under supervise

supervise, which monitors a service and restarts it if it dies.

If you're logging to a supervised log service