me_msecs
kev->data = mevp->me_msecs;
it.it_value.tv_sec = mevp->me_msecs / MILLISEC;
MSEC2NSEC(mevp->me_msecs % MILLISEC);
mevp->me_msecs = mevent_file_poll_interval_ms;
mevp->me_msecs = tfd;