gistfile1.txt

With queue optimizations (1.9.3):

benchmarks  1	10	100	1000	10000
bench_inserting_keys	 0.000032	 0.000026	 0.000122	 0.001285	 0.059764
bench_keys_with_sync	 0.000255	 0.000853	 0.006070	 0.060688	 0.663408
bench_reading_keys	 0.000026	 0.000044	 0.000223	 0.001935	 0.022019

Without:

benchmarks  1	10	100	1000	10000
bench_inserting_keys	 0.000028	 0.000023	 0.000127	 0.001295	 0.059206
bench_keys_with_sync	 0.000194	 0.000707	 0.006569	 0.076458	 0.662060
bench_reading_keys	 0.000024	 0.000045	 0.000250	 0.002069	 0.020803

With (1.8.7):

bench_inserting_keys   0.000102	 0.000116	 0.000240	 0.003959	 0.272607
bench_keys_with_sync	 0.000195	 0.001026	 0.009320	 0.097578	 1.052410
bench_reading_keys	 0.000035	 0.000113	 0.000809	 0.011227	 0.252671

without:

bench_inserting_keys   0.000188	 0.000128	 0.000250	 0.004201	 0.271954
bench_keys_with_sync	 0.000214	 0.001306	 0.012507	 0.123098	 1.339768
bench_reading_keys	 0.000036	 0.000108	 0.000758	 0.010561	 0.258597