| ================================================================================================ |
| OpenHashMap vs java.util.HashMap |
| ================================================================================================ |
| |
| OpenJDK 64-Bit Server VM 25.0.4+7-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 326 345 19 3.1 326.3 1.0X |
| java.util.HashMap 50 96 67 19.8 50.5 6.5X |
| |
| OpenJDK 64-Bit Server VM 25.0.4+7-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 1103 1208 148 4.5 220.6 1.0X |
| java.util.HashMap merge 1273 1286 19 3.9 254.5 0.9X |
| |
| OpenJDK 64-Bit Server VM 25.0.4+7-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 120 136 15 8.3 120.0 1.0X |
| java.util.HashMap 58 64 3 17.1 58.4 2.1X |
| |
| |
