NUM_WRITE_IOVEC  2274 opal/mca/event/libevent2022/libevent/buffer.c 	IOV_TYPE iov[NUM_WRITE_IOVEC];
NUM_WRITE_IOVEC  2285 opal/mca/event/libevent2022/libevent/buffer.c 	while (chain != NULL && i < NUM_WRITE_IOVEC && howmuch) {