NFS_HZ
#define NFS_TIMEO (1 * NFS_HZ) /* Default timeout = 1 second */
#define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */
#define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */
#define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/
#define NFSFS (NFS_RTT_SCALE * NFS_HZ)
n += NFS_ASYSCALE * NFS_HZ;
if (n < NFS_ASYSCALE * NFS_HZ * 10)
n = NFS_ASYSCALE * NFS_HZ * 10;
nmp->nm_timeo = (argp->timeo * NFS_HZ + 5) / 10;