orausp> ls -lh
total 102400
-rw-r-----   1 orausp   dba          50M Jul 12 21:42 USParch1_67502.dbf

orausp> time gzip USParch1_67502.dbf

real	0m11.507s
user	0m10.890s
sys	0m0.310s

orausp> ls -lh
total 47088
-rw-r-----   1 orausp   dba          23M Jul 12 21:42 USParch1_67502.dbf.gz
-rw-------   1 root     other          0 Jul 12 21:45 croutIDB1GjiBa
-rw-------   1 orausp   dba            0 Jul 12 21:45 croutKDB3GjiBa

orausp> time gunzip USParch1_67502.dbf.gz

real	0m1.904s
user	0m1.540s
sys	0m0.380s

orausp> ls -lh
total 102400
-rw-r-----   1 orausp   dba          50M Jul 12 21:42 USParch1_67502.dbf

orausp> time gzip --fast USParch1_67502.dbf

real	0m6.124s
user	0m5.850s
sys	0m0.270s

orausp> ls -lh
total 51040
-rw-r-----   1 orausp   dba          25M Jul 12 21:42 USParch1_67502.dbf.gz

orausp> time gunzip USParch1_67502.dbf.gz

real	0m1.854s
user	0m1.490s
sys	0m0.340s

orausp> ls -lh
total 102400
-rw-r-----   1 orausp   dba          50M Jul 12 21:42 USParch1_67502.dbf

orausp>