ulimit output looks different on the two server

Issue

• The "ulimit -a" output looks different on the two boxes below. They are both running RHEL6.5. Do you know why the output looks so different?

Server1

 $ ulimit -a
time(cpu-seconds)    unlimited
file(blocks)         unlimited
coredump(blocks)     0
data(KiB)            unlimited
stack(KiB)           10240
lockedmem(KiB)       64
memory(KiB)          unlimited
nofiles(descriptors) 65536
processes            95140
vmemory(KiB)         unlimited
flocks               unlimited


Server 2

$ ulimit -a
address space limit (Kibytes)  (-M)  unlimited
core file size (blocks)        (-c)  0
cpu time (seconds)             (-t)  unlimited
data size (Kibytes)            (-d)  unlimited
file size (blocks)             (-f)  unlimited
locks                          (-x)  unlimited
locked address space (Kibytes) (-l)  64
message queue size (Kibytes)   (-q)  800
nice                           (-e)  0
nofile                         (-n)  65536
nproc                          (-u)  192089
pipe buffer size (bytes)       (-p)  4096
max memory size (Kibytes)      (-m)  unlimited
rtprio                         (-r)  0
socket buffer size (bytes)     (-b)  4096
sigpend                        (-i)  192089
stack size (Kibytes)           (-s)  10240
swap size (Kibytes)            (-w)  not supported
threads                        (-T)  not supported
process size (Kibytes)         (-v)  unlimited