> strace -p 6569
Process 6569 attached - interrupt to quit
futex(0x942820, FUTEX_WAIT, 2, NULL)    = -1 EINTR (Interrupted system call)
--- SIGUSR1 (User defined signal 1) @ 0 (0) ---
futex(0x942820, FUTEX_WAIT, 2, NULL)    = -1 EINTR (Interrupted system call)
--- SIGTERM (Terminated) @ 0 (0) ---
--- SIGCONT (Continued) @ 0 (0) ---
fcntl64(5, F_GETFL)                     = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl64(5, F_SETFL, O_RDWR)             = 0
send(5, "QUIT :Caught sigterm, terminatin"..., 38, 0) = 38
time([1136519972])                      = 1136519972
futex(0x942ecc, FUTEX_WAIT, 2, NULL)    = -1 EINTR (Interrupted system call)
--- SIGCONT (Continued) @ 0 (0) ---
futex(0x942ecc, FUTEX_WAIT, 2, NULL)    = -1 EINTR (Interrupted system call)
--- SIGUSR1 (User defined signal 1) @ 0 (0) ---
futex(0x942ecc, FUTEX_WAIT, 2, NULL)    = -1 EINTR (Interrupted system call)
--- SIGCONT (Continued) @ 0 (0) ---
futex(0x942ecc, FUTEX_WAIT, 2, NULL)    = -1 EINTR (Interrupted system call)
--- SIGCONT (Continued) @ 0 (0) ---
futex(0x942ecc, FUTEX_WAIT, 2, NULL)    = -1 EINTR (Interrupted system call)
--- SIGCONT (Continued) @ 0 (0) ---
futex(0x942ecc, FUTEX_WAIT, 2, NULL)    = -1 EINTR (Interrupted system call)
+++ killed by SIGKILL +++