selecting peers use formula: max(MIN, min(MAX, sqrt(x)))

[nanne007]

close #2307

[github-actions]

Benchmark for 1770613

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
accumulator_append	1253.5±91.91µs	1217.7±62.07µs	+2.94%
block_apply/block_apply_10	369.2±2.80ms	369.0±2.14ms	+0.05%
block_apply/block_apply_1000	39.1±0.19s	39.1±0.20s	0.00%
get_with_proof/db_store	43.5±0.96µs	42.9±0.70µs	+1.40%
get_with_proof/mem_store	32.8±0.70µs	32.8±0.60µs	0.00%
put_and_commit/db_store/1	543.2±35.56µs	516.2±31.95µs	+5.23%
put_and_commit/db_store/10	1655.8±100.49µs	1662.4±86.84µs	-0.40%
put_and_commit/db_store/100	9.7±0.57ms	9.5±0.43ms	+2.11%
put_and_commit/db_store/5	1037.8±134.45µs	1007.7±94.83µs	+2.99%
put_and_commit/db_store/50	5.5±1.45ms	5.4±0.37ms	+1.85%
put_and_commit/mem_store/1	73.2±3.77µs	73.6±4.58µs	-0.54%
put_and_commit/mem_store/10	642.0±31.30µs	650.7±33.22µs	-1.34%
put_and_commit/mem_store/100	6.0±0.20ms	6.1±0.21ms	-1.64%
put_and_commit/mem_store/5	330.6±17.72µs	337.1±16.99µs	-1.93%
put_and_commit/mem_store/50	3.1±0.12ms	3.1±0.17ms	0.00%
query_block/query_block_in(10)_times(100)	3.2±0.04ms	3.2±0.05ms	0.00%
query_block/query_block_in(10)_times(1000)	32.5±0.56ms	32.0±0.78ms	+1.56%
query_block/query_block_in(10)_times(10000)	328.6±16.06ms	321.0±4.19ms	+2.37%
query_block/query_block_in(1000)_times(100)	1370.8±19.93µs	1320.5±5.73µs	+3.81%
query_block/query_block_in(1000)_times(1000)	13.7±0.18ms	13.1±0.09ms	+4.58%
query_block/query_block_in(1000)_times(10000)	137.4±0.90ms	131.6±0.60ms	+4.41%
storage_transaction	12.4±0.84ms	13.0±3.50ms	-4.62%
vm/transaction_execution/1	382.1±1.00ms	382.1±1.96ms	0.00%
vm/transaction_execution/10	123.9±0.51ms	124.0±1.29ms	-0.08%
vm/transaction_execution/20	115.9±1.08ms	115.2±0.69ms	+0.61%
vm/transaction_execution/5	150.3±0.78ms	150.1±1.16ms	+0.13%
vm/transaction_execution/50	132.3±1.15ms	132.0±1.27ms	+0.23%

[github-actions]

Benchmark for 187fb8a

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
accumulator_append	1009.6±50.81µs	1040.4±62.84µs	-2.96%
block_apply/block_apply_10	336.5±3.22ms	332.9±4.49ms	+1.08%
block_apply/block_apply_1000	35.0±0.43s	35.3±0.33s	-0.85%
get_with_proof/db_store	43.2±0.78µs	43.5±1.19µs	-0.69%
get_with_proof/mem_store	33.2±0.86µs	34.0±0.67µs	-2.35%
put_and_commit/db_store/1	513.5±27.75µs	375.9±50.61µs	+36.61%
put_and_commit/db_store/10	1419.6±61.74µs	1409.4±69.93µs	+0.72%
put_and_commit/db_store/100	9.0±0.43ms	9.4±0.57ms	-4.26%
put_and_commit/db_store/5	830.5±78.77µs	848.7±101.07µs	-2.14%
put_and_commit/db_store/50	5.0±0.28ms	5.0±0.28ms	0.00%
put_and_commit/mem_store/1	75.2±4.06µs	75.2±4.60µs	0.00%
put_and_commit/mem_store/10	660.5±30.78µs	649.3±34.99µs	+1.72%
put_and_commit/mem_store/100	6.1±0.24ms	6.2±0.23ms	-1.61%
put_and_commit/mem_store/5	335.5±17.44µs	332.0±17.77µs	+1.05%
put_and_commit/mem_store/50	3.2±0.17ms	3.1±0.14ms	+3.23%
query_block/query_block_in(10)_times(100)	3.3±0.05ms	3.2±0.09ms	+3.13%
query_block/query_block_in(10)_times(1000)	32.7±0.97ms	32.4±1.01ms	+0.93%
query_block/query_block_in(10)_times(10000)	326.7±4.11ms	325.0±6.45ms	+0.52%
query_block/query_block_in(1000)_times(100)	1358.0±25.86µs	1345.7±11.26µs	+0.91%
query_block/query_block_in(1000)_times(1000)	13.5±0.12ms	13.7±0.13ms	-1.46%
query_block/query_block_in(1000)_times(10000)	135.3±1.99ms	139.1±2.06ms	-2.73%
storage_transaction	9.3±0.36ms	9.4±0.34ms	-1.06%
vm/transaction_execution/1	386.0±2.33ms	384.1±2.84ms	+0.49%
vm/transaction_execution/10	124.9±1.14ms	124.3±0.85ms	+0.48%
vm/transaction_execution/20	116.0±1.03ms	116.2±0.95ms	-0.17%
vm/transaction_execution/5	151.4±1.35ms	151.2±1.57ms	+0.13%
vm/transaction_execution/50	132.8±1.62ms	131.4±1.54ms	+1.07%