| ================================================================================================ |
| OpenHashMap vs java.util.HashMap |
| ================================================================================================ |
| |
| OpenJDK 64-Bit Server VM 21.0.12+8-LTS on Linux 6.17.0-1020-azure |
| AMD EPYC 7763 64-Core Processor |
| Insert 1000000 distinct String keys: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative |
| ------------------------------------------------------------------------------------------------------------------------ |
| OpenHashMap 262 280 15 3.8 262.0 1.0X |
| java.util.HashMap 48 84 57 21.0 47.7 5.5X |
| |
| OpenJDK 64-Bit Server VM 21.0.12+8-LTS on Linux 6.17.0-1020-azure |
| AMD EPYC 7763 64-Core Processor |
| Aggregate 5000000 ops on 1000000 String keys: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative |
| ---------------------------------------------------------------------------------------------------------------------------- |
| OpenHashMap changeValue 858 885 28 5.8 171.7 1.0X |
| java.util.HashMap merge 772 811 60 6.5 154.5 1.1X |
| |
| OpenJDK 64-Bit Server VM 21.0.12+8-LTS on Linux 6.17.0-1020-azure |
| AMD EPYC 7763 64-Core Processor |
| Look up 1000000 String keys in random order: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative |
| --------------------------------------------------------------------------------------------------------------------------- |
| OpenHashMap 101 106 3 9.9 100.9 1.0X |
| java.util.HashMap 48 53 3 20.7 48.3 2.1X |
| |
| |
