Test File: Oracle DP Dump File (1.073.741.824 Bytes; 1GB) ========================================================= unzipped gzip -1 gzip -5 gzip -9 ------------- ----------- ----------- ----------- Size 1.073.741.824 316.547.126 261.440.126 246.306.581 Elapsed Time (mm:ss) 00:00 00:33 00:51 04:08 Compression Rate (%) 70,52 75,65 77,06