下面测试替换我实现的hash map. 性能提升比较明显https://github.com/ktprime/emhash/blob/master/hash_table5.hpp
D:\timer-benchmarks-master\test\BenchTimer.cpp relative time/iter iters/s
PQTimerAdd 17.27ms 57.89
TreeTimerAdd 76.74% 22.51ms 44.42
WheelTimerAdd 113.68% 15.20ms 65.81
PQTimerDel 12.65ms 79.08
TreeTimerDel 113.87m% 11.11s 90.04m
WheelTimerDel 159.14% 7.95ms 125.85
PQTimerTick 3.67ms 272.61
TreeTimerTick 70.78% 5.18ms 192.94
WheelTimerTick 58.32% 6.29ms 158.98
PQTimerAdd 12.44ms 80.38
TreeTimerAdd 55.98% 22.22ms 45.00
WheelTimerAdd 119.79% 10.39ms 96.28
PQTimerDel 7.73ms 129.29
TreeTimerDel 68.57m% 11.28s 88.65m
WheelTimerDel 157.01% 4.93ms 203.01
PQTimerTick 2.17ms 461.49
TreeTimerTick 38.52% 5.63ms 177.75
WheelTimerTick 46.62% 4.65ms 215.16
