Better instrument backtraces for blocked futures

[sarsko]

Improves the backtrace output for blocked futures by instrumenting JoinHandle and Acquire instead of sleep

---

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

Benchmark for 26d3ad1

Click to view benchmark

Test	Base	PR	%
buffer/pct	290.5±1.33ms	362.2±5.79ms	+24.68%
buffer/random	846.7±5.38ms	992.5±7.26ms	+17.22%
counter async/pct-narrow	1946.9±24.61µs	1968.5±46.08µs	+1.11%
counter async/pct-wide	21.2±0.17ms	21.3±0.57ms	+0.47%
counter async/random-narrow	3.1±0.01ms	3.2±0.01ms	+3.23%
counter async/random-wide	9.6±0.10ms	9.8±0.06ms	+2.08%
counter scaling async/RW/{tasks:1024,events:100000}	206.1±1.01ms	208.2±4.17ms	+1.02%
counter scaling async/RW/{tasks:128,events:100000}	97.3±0.27ms	99.0±1.40ms	+1.75%
counter scaling async/RW/{tasks:128,events:10000}	10.7±0.04ms	11.1±0.07ms	+3.74%
counter scaling async/RW/{tasks:16,events:100000}	39.1±0.16ms	39.9±0.31ms	+2.05%
counter scaling async/RW/{tasks:16,events:10000}	4.3±0.01ms	4.3±0.01ms	0.00%
counter scaling async/RW/{tasks:16,events:1000}	758.4±7.70µs	760.2±7.21µs	+0.24%
counter scaling async/RW/{tasks:32,events:100000}	47.7±0.08ms	49.0±0.14ms	+2.73%
counter scaling async/RW/{tasks:32,events:10000}	5.4±0.02ms	5.6±0.01ms	+3.70%
counter scaling async/RW/{tasks:32,events:1000}	1174.3±17.77µs	1193.9±15.68µs	+1.67%
counter scaling async/RW/{tasks:4,events:100000}	28.5±0.08ms	29.3±0.05ms	+2.81%
counter scaling async/RW/{tasks:4,events:10000}	3.0±0.01ms	3.1±0.01ms	+3.33%
counter scaling async/RW/{tasks:4,events:1000}	404.7±2.63µs	406.8±2.12µs	+0.52%
counter scaling async/RW/{tasks:64,events:100000}	65.5±0.09ms	65.8±0.17ms	+0.46%
counter scaling async/RW/{tasks:64,events:10000}	7.6±0.03ms	7.7±0.05ms	+1.32%
counter scaling async/RW/{tasks:64,events:1000}	1872.3±26.99µs	1936.4±17.35µs	+3.42%
counter sync/pct-narrow	1961.4±21.39µs	1958.2±36.33µs	-0.16%
counter sync/pct-wide	21.1±0.10ms	21.2±0.19ms	+0.47%
counter sync/random-narrow	3.1±0.01ms	3.1±0.01ms	0.00%
counter sync/random-wide	9.6±0.06ms	9.7±0.18ms	+1.04%
create async/pct-narrow	1303.1±14.67µs	1482.0±25.68µs	+13.73%
create async/pct-wide	37.7±0.22ms	38.2±0.14ms	+1.33%
create async/random-narrow	1304.3±16.12µs	1516.5±24.87µs	+16.27%
create async/random-wide	20.5±0.07ms	20.8±0.18ms	+1.46%
create sync/pct-narrow	1403.4±23.55µs	1405.4±9.62µs	+0.14%
create sync/pct-wide	36.6±0.15ms	36.8±0.20ms	+0.55%
create sync/random-narrow	1219.3±21.16µs	1236.3±15.54µs	+1.39%
create sync/random-wide	20.2±0.10ms	20.5±0.09ms	+1.49%
lock scaling sync/RW/{tasks:1024,events:100000}	299.8±2.04s	301.1±1.09s	+0.43%
lock scaling sync/RW/{tasks:128,events:100000}	38.3±0.31s	38.9±0.19s	+1.57%
lock scaling sync/RW/{tasks:128,events:10000}	3.6±0.03s	3.7±0.02s	+2.78%
lock scaling sync/RW/{tasks:16,events:100000}	4.3±0.04s	4.6±0.01s	+6.98%
lock scaling sync/RW/{tasks:16,events:10000}	420.7±3.01ms	454.2±4.61ms	+7.96%
lock scaling sync/RW/{tasks:16,events:1000}	39.5±0.69ms	42.4±0.26ms	+7.34%
lock scaling sync/RW/{tasks:32,events:100000}	9.1±0.07s	9.6±0.04s	+5.49%
lock scaling sync/RW/{tasks:32,events:10000}	886.8±10.22ms	925.3±4.21ms	+4.34%
lock scaling sync/RW/{tasks:32,events:1000}	81.5±1.41ms	85.1±0.45ms	+4.42%
lock scaling sync/RW/{tasks:4,events:100000}	718.7±3.15ms	912.4±5.44ms	+26.95%
lock scaling sync/RW/{tasks:4,events:10000}	70.4±0.42ms	90.8±0.43ms	+28.98%
lock scaling sync/RW/{tasks:4,events:1000}	7.1±0.05ms	9.0±0.11ms	+26.76%
lock scaling sync/RW/{tasks:64,events:100000}	18.8±0.11s	19.4±0.16s	+3.19%
lock scaling sync/RW/{tasks:64,events:10000}	1821.3±24.43ms	1869.6±17.21ms	+2.65%
lock scaling sync/RW/{tasks:64,events:1000}	152.4±0.35ms	155.8±0.80ms	+2.23%
lock sync/pct-narrow	3.1±0.01ms	3.3±0.06ms	+6.45%
lock sync/pct-wide	22.7±0.16ms	22.8±0.13ms	+0.44%
lock sync/random-narrow	100.1±1.27ms	121.5±0.65ms	+21.38%
lock sync/random-wide	2.8±0.03s	2.9±0.02s	+3.57%

[github-actions]

Benchmark for cd2784a

Click to view benchmark

Test	Base	PR	%
buffer/pct	290.8±1.40ms	366.5±3.13ms	+26.03%
buffer/random	845.2±1.93ms	997.9±9.16ms	+18.07%
counter async/pct-narrow	1974.6±33.44µs	1973.4±28.16µs	-0.06%
counter async/pct-wide	21.5±0.15ms	21.2±0.15ms	-1.40%
counter async/random-narrow	3.1±0.03ms	3.2±0.02ms	+3.23%
counter async/random-wide	9.7±0.09ms	9.9±0.15ms	+2.06%
counter scaling async/RW/{tasks:1024,events:100000}	207.8±0.60ms	211.1±3.77ms	+1.59%
counter scaling async/RW/{tasks:128,events:100000}	98.4±0.23ms	98.6±0.26ms	+0.20%
counter scaling async/RW/{tasks:128,events:10000}	10.9±0.07ms	11.1±0.07ms	+1.83%
counter scaling async/RW/{tasks:16,events:100000}	39.9±0.13ms	40.0±0.23ms	+0.25%
counter scaling async/RW/{tasks:16,events:10000}	4.3±0.01ms	4.4±0.03ms	+2.33%
counter scaling async/RW/{tasks:16,events:1000}	762.0±9.78µs	776.5±8.05µs	+1.90%
counter scaling async/RW/{tasks:32,events:100000}	49.3±0.14ms	49.3±0.30ms	0.00%
counter scaling async/RW/{tasks:32,events:10000}	5.5±0.02ms	5.6±0.03ms	+1.82%
counter scaling async/RW/{tasks:32,events:1000}	1182.9±15.20µs	1210.0±9.87µs	+2.29%
counter scaling async/RW/{tasks:4,events:100000}	28.7±0.12ms	29.4±0.20ms	+2.44%
counter scaling async/RW/{tasks:4,events:10000}	3.0±0.01ms	3.1±0.01ms	+3.33%
counter scaling async/RW/{tasks:4,events:1000}	397.1±2.94µs	415.7±2.15µs	+4.68%
counter scaling async/RW/{tasks:64,events:100000}	65.8±0.18ms	66.2±0.88ms	+0.61%
counter scaling async/RW/{tasks:64,events:10000}	7.7±0.04ms	7.8±0.04ms	+1.30%
counter scaling async/RW/{tasks:64,events:1000}	1889.5±26.53µs	1923.7±23.34µs	+1.81%
counter sync/pct-narrow	1965.4±15.04µs	1976.5±26.37µs	+0.56%
counter sync/pct-wide	21.4±0.14ms	21.2±0.16ms	-0.93%
counter sync/random-narrow	3.1±0.02ms	3.2±0.02ms	+3.23%
counter sync/random-wide	9.7±0.08ms	9.7±0.08ms	0.00%
create async/pct-narrow	1305.9±32.84µs	1501.6±27.97µs	+14.99%
create async/pct-wide	37.9±0.21ms	38.6±0.43ms	+1.85%
create async/random-narrow	1320.1±27.46µs	1519.3±29.07µs	+15.09%
create async/random-wide	20.4±0.10ms	21.0±0.10ms	+2.94%
create sync/pct-narrow	1412.3±17.98µs	1410.4±14.53µs	-0.13%
create sync/pct-wide	36.6±0.20ms	36.7±0.17ms	+0.27%
create sync/random-narrow	1235.0±11.15µs	1225.9±13.80µs	-0.74%
create sync/random-wide	20.2±0.12ms	20.6±0.14ms	+1.98%
lock scaling sync/RW/{tasks:1024,events:100000}	299.6±1.78s	304.1±1.08s	+1.50%
lock scaling sync/RW/{tasks:128,events:100000}	38.3±0.24s	38.9±0.27s	+1.57%
lock scaling sync/RW/{tasks:128,events:10000}	3.6±0.02s	3.6±0.01s	0.00%
lock scaling sync/RW/{tasks:16,events:100000}	4.3±0.04s	4.6±0.02s	+6.98%
lock scaling sync/RW/{tasks:16,events:10000}	422.1±4.88ms	449.9±2.33ms	+6.59%
lock scaling sync/RW/{tasks:16,events:1000}	39.5±0.22ms	41.9±0.22ms	+6.08%
lock scaling sync/RW/{tasks:32,events:100000}	9.1±0.05s	9.5±0.05s	+4.40%
lock scaling sync/RW/{tasks:32,events:10000}	890.5±6.17ms	921.6±4.21ms	+3.49%
lock scaling sync/RW/{tasks:32,events:1000}	82.1±0.47ms	85.3±0.52ms	+3.90%
lock scaling sync/RW/{tasks:4,events:100000}	724.5±3.72ms	922.6±4.10ms	+27.34%
lock scaling sync/RW/{tasks:4,events:10000}	71.5±0.45ms	90.3±0.55ms	+26.29%
lock scaling sync/RW/{tasks:4,events:1000}	7.1±0.04ms	8.9±0.03ms	+25.35%
lock scaling sync/RW/{tasks:64,events:100000}	18.9±0.14s	19.3±0.11s	+2.12%
lock scaling sync/RW/{tasks:64,events:10000}	1818.4±16.00ms	1853.2±14.89ms	+1.91%
lock scaling sync/RW/{tasks:64,events:1000}	151.7±1.25ms	155.8±1.17ms	+2.70%
lock sync/pct-narrow	3.0±0.03ms	2.9±0.02ms	-3.33%
lock sync/pct-wide	22.8±0.18ms	22.6±0.24ms	-0.88%
lock sync/random-narrow	100.3±0.70ms	121.3±0.82ms	+20.94%
lock sync/random-wide	2.8±0.03s	2.9±0.02s	+3.57%

[github-actions]

Benchmark for 6efccc3

Click to view benchmark

Test	Base	PR	%
buffer/pct	289.6±1.71ms	359.6±4.29ms	+24.17%
buffer/random	838.2±5.45ms	979.0±4.67ms	+16.80%
counter async/pct-narrow	1949.9±14.75µs	1959.4±11.46µs	+0.49%
counter async/pct-wide	21.4±0.15ms	21.2±0.15ms	-0.93%
counter async/random-narrow	3.1±0.02ms	3.1±0.01ms	0.00%
counter async/random-wide	9.7±0.09ms	9.8±0.13ms	+1.03%
counter scaling async/RW/{tasks:1024,events:100000}	206.5±0.44ms	209.2±1.20ms	+1.31%
counter scaling async/RW/{tasks:128,events:100000}	98.3±0.37ms	98.6±0.43ms	+0.31%
counter scaling async/RW/{tasks:128,events:10000}	10.8±0.06ms	11.1±0.11ms	+2.78%
counter scaling async/RW/{tasks:16,events:100000}	39.3±0.13ms	39.9±0.17ms	+1.53%
counter scaling async/RW/{tasks:16,events:10000}	4.3±0.01ms	4.3±0.01ms	0.00%
counter scaling async/RW/{tasks:16,events:1000}	766.9±8.71µs	771.2±9.62µs	+0.56%
counter scaling async/RW/{tasks:32,events:100000}	48.5±0.09ms	49.2±0.24ms	+1.44%
counter scaling async/RW/{tasks:32,events:10000}	5.5±0.02ms	5.6±0.05ms	+1.82%
counter scaling async/RW/{tasks:32,events:1000}	1196.4±14.73µs	1191.4±15.94µs	-0.42%
counter scaling async/RW/{tasks:4,events:100000}	28.5±0.04ms	29.5±0.16ms	+3.51%
counter scaling async/RW/{tasks:4,events:10000}	3.0±0.01ms	3.1±0.02ms	+3.33%
counter scaling async/RW/{tasks:4,events:1000}	396.2±2.78µs	414.2±4.44µs	+4.54%
counter scaling async/RW/{tasks:64,events:100000}	65.2±0.10ms	66.3±0.27ms	+1.69%
counter scaling async/RW/{tasks:64,events:10000}	7.7±0.07ms	7.7±0.06ms	0.00%
counter scaling async/RW/{tasks:64,events:1000}	1916.0±36.21µs	1950.8±38.51µs	+1.82%
counter sync/pct-narrow	1959.4±23.78µs	1955.3±21.11µs	-0.21%
counter sync/pct-wide	21.2±0.11ms	21.4±0.24ms	+0.94%
counter sync/random-narrow	3.1±0.02ms	3.1±0.01ms	0.00%
counter sync/random-wide	9.6±0.07ms	9.7±0.14ms	+1.04%
create async/pct-narrow	1328.8±22.70µs	1508.1±35.47µs	+13.49%
create async/pct-wide	37.7±0.15ms	38.8±0.22ms	+2.92%
create async/random-narrow	1310.2±10.41µs	1536.8±11.43µs	+17.30%
create async/random-wide	20.5±0.14ms	21.1±0.24ms	+2.93%
create sync/pct-narrow	1436.2±16.21µs	1440.8±12.36µs	+0.32%
create sync/pct-wide	36.9±0.16ms	36.8±0.18ms	-0.27%
create sync/random-narrow	1232.4±29.06µs	1258.4±23.59µs	+2.11%
create sync/random-wide	20.2±0.11ms	20.8±0.16ms	+2.97%
lock scaling sync/RW/{tasks:1024,events:100000}	296.1±0.94s	306.1±0.77s	+3.38%
lock scaling sync/RW/{tasks:128,events:100000}	37.9±0.14s	39.4±0.14s	+3.96%
lock scaling sync/RW/{tasks:128,events:10000}	3.6±0.03s	3.7±0.02s	+2.78%
lock scaling sync/RW/{tasks:16,events:100000}	4.3±0.07s	4.7±0.03s	+9.30%
lock scaling sync/RW/{tasks:16,events:10000}	416.3±3.91ms	455.3±2.36ms	+9.37%
lock scaling sync/RW/{tasks:16,events:1000}	38.7±0.38ms	42.8±0.10ms	+10.59%
lock scaling sync/RW/{tasks:32,events:100000}	9.0±0.07s	9.7±0.04s	+7.78%
lock scaling sync/RW/{tasks:32,events:10000}	882.3±8.81ms	936.7±6.04ms	+6.17%
lock scaling sync/RW/{tasks:32,events:1000}	80.6±0.58ms	87.4±0.62ms	+8.44%
lock scaling sync/RW/{tasks:4,events:100000}	710.4±5.12ms	921.0±5.90ms	+29.65%
lock scaling sync/RW/{tasks:4,events:10000}	70.1±0.27ms	90.8±0.21ms	+29.53%
lock scaling sync/RW/{tasks:4,events:1000}	7.0±0.04ms	9.0±0.02ms	+28.57%
lock scaling sync/RW/{tasks:64,events:100000}	18.7±0.11s	19.7±0.10s	+5.35%
lock scaling sync/RW/{tasks:64,events:10000}	1786.9±18.38ms	1887.9±6.27ms	+5.65%
lock scaling sync/RW/{tasks:64,events:1000}	152.1±1.80ms	158.9±0.93ms	+4.47%
lock sync/pct-narrow	3.0±0.01ms	3.0±0.01ms	0.00%
lock sync/pct-wide	22.7±0.16ms	22.6±0.22ms	-0.44%
lock sync/random-narrow	99.0±1.38ms	121.5±1.13ms	+22.73%
lock sync/random-wide	2.8±0.03s	2.9±0.02s	+3.57%

[github-actions]

Benchmark for 7e162d3

Click to view benchmark

Test	Base	PR	%
buffer/pct	289.1±1.45ms	337.0±7.43ms	+16.57%
buffer/random	849.6±6.56ms	911.2±7.70ms	+7.25%
counter async/pct-narrow	1958.9±11.59µs	1827.9±41.43µs	-6.69%
counter async/pct-wide	21.2±0.16ms	19.7±0.30ms	-7.08%
counter async/random-narrow	3.1±0.01ms	2.9±0.05ms	-6.45%
counter async/random-wide	9.6±0.05ms	9.0±0.15ms	-6.25%
counter scaling async/RW/{tasks:1024,events:100000}	204.4±0.84ms	189.0±1.32ms	-7.53%
counter scaling async/RW/{tasks:128,events:100000}	97.6±0.26ms	90.4±0.64ms	-7.38%
counter scaling async/RW/{tasks:128,events:10000}	10.9±0.06ms	10.1±0.09ms	-7.34%
counter scaling async/RW/{tasks:16,events:100000}	39.4±0.13ms	36.0±0.39ms	-8.63%
counter scaling async/RW/{tasks:16,events:10000}	4.3±0.01ms	3.9±0.05ms	-9.30%
counter scaling async/RW/{tasks:16,events:1000}	758.1±9.28µs	696.8±7.82µs	-8.09%
counter scaling async/RW/{tasks:32,events:100000}	48.9±0.15ms	45.0±0.95ms	-7.98%
counter scaling async/RW/{tasks:32,events:10000}	5.5±0.12ms	5.1±0.04ms	-7.27%
counter scaling async/RW/{tasks:32,events:1000}	1173.0±15.71µs	1089.8±15.00µs	-7.09%
counter scaling async/RW/{tasks:4,events:100000}	28.6±0.06ms	26.4±0.24ms	-7.69%
counter scaling async/RW/{tasks:4,events:10000}	3.0±0.01ms	2.8±0.02ms	-6.67%
counter scaling async/RW/{tasks:4,events:1000}	401.7±8.75µs	378.4±6.47µs	-5.80%
counter scaling async/RW/{tasks:64,events:100000}	65.6±0.17ms	60.5±0.49ms	-7.77%
counter scaling async/RW/{tasks:64,events:10000}	7.7±0.04ms	7.1±0.08ms	-7.79%
counter scaling async/RW/{tasks:64,events:1000}	1881.4±26.20µs	1736.3±27.72µs	-7.71%
counter sync/pct-narrow	1971.8±11.82µs	1809.6±27.57µs	-8.23%
counter sync/pct-wide	21.2±0.11ms	19.7±0.29ms	-7.08%
counter sync/random-narrow	3.1±0.02ms	2.9±0.05ms	-6.45%
counter sync/random-wide	9.7±0.22ms	9.1±0.70ms	-6.19%
create async/pct-narrow	1312.8±11.75µs	1414.5±32.40µs	+7.75%
create async/pct-wide	37.8±0.13ms	35.5±0.34ms	-6.08%
create async/random-narrow	1308.5±14.55µs	1398.6±27.54µs	+6.89%
create async/random-wide	20.4±0.07ms	19.6±0.52ms	-3.92%
create sync/pct-narrow	1412.2±29.91µs	1330.8±30.01µs	-5.76%
create sync/pct-wide	36.7±0.57ms	34.8±0.91ms	-5.18%
create sync/random-narrow	1233.4±21.31µs	1188.6±32.02µs	-3.63%
create sync/random-wide	20.2±0.12ms	18.8±0.20ms	-6.93%
lock scaling sync/RW/{tasks:1024,events:100000}	298.1±2.28s	304.3±2.53s	+2.08%
lock scaling sync/RW/{tasks:128,events:100000}	38.6±0.15s	38.9±0.30s	+0.78%
lock scaling sync/RW/{tasks:128,events:10000}	3.7±0.04s	3.7±0.02s	0.00%
lock scaling sync/RW/{tasks:16,events:100000}	4.3±0.03s	4.4±0.05s	+2.33%
lock scaling sync/RW/{tasks:16,events:10000}	423.0±3.54ms	431.2±11.17ms	+1.94%
lock scaling sync/RW/{tasks:16,events:1000}	39.4±0.31ms	41.0±0.84ms	+4.06%
lock scaling sync/RW/{tasks:32,events:100000}	9.2±0.06s	9.1±0.07s	-1.09%
lock scaling sync/RW/{tasks:32,events:10000}	891.0±5.59ms	888.4±6.54ms	-0.29%
lock scaling sync/RW/{tasks:32,events:1000}	81.1±0.49ms	82.5±1.35ms	+1.73%
lock scaling sync/RW/{tasks:4,events:100000}	710.4±3.34ms	855.7±13.58ms	+20.45%
lock scaling sync/RW/{tasks:4,events:10000}	70.8±0.13ms	83.2±0.47ms	+17.51%
lock scaling sync/RW/{tasks:4,events:1000}	7.0±0.03ms	8.3±0.06ms	+18.57%
lock scaling sync/RW/{tasks:64,events:100000}	19.0±0.10s	19.1±0.46s	+0.53%
lock scaling sync/RW/{tasks:64,events:10000}	1827.7±20.92ms	1776.9±15.22ms	-2.78%
lock scaling sync/RW/{tasks:64,events:1000}	153.0±1.73ms	148.6±2.87ms	-2.88%
lock sync/pct-narrow	3.1±0.01ms	2.8±0.07ms	-9.68%
lock sync/pct-wide	22.6±0.42ms	21.0±0.52ms	-7.08%
lock sync/random-narrow	99.5±0.92ms	112.4±1.56ms	+12.96%
lock sync/random-wide	2.9±0.03s	2.7±0.02s	-6.90%

[github-actions]

Benchmark for e2890aa

Click to view benchmark

Test	Base	PR	%
buffer/pct	290.5±2.55ms	359.4±3.39ms	+23.72%
buffer/random	858.3±6.14ms	985.5±6.69ms	+14.82%
counter async/pct-narrow	2.1±0.01ms	1955.8±11.80µs	-6.87%
counter async/pct-wide	21.5±0.40ms	21.2±0.28ms	-1.40%
counter async/random-narrow	3.2±0.02ms	3.1±0.02ms	-3.13%
counter async/random-wide	9.7±0.08ms	9.6±0.06ms	-1.03%
counter scaling async/RW/{tasks:1024,events:100000}	206.5±0.72ms	205.9±5.00ms	-0.29%
counter scaling async/RW/{tasks:128,events:100000}	97.6±0.12ms	97.4±0.21ms	-0.20%
counter scaling async/RW/{tasks:128,events:10000}	10.8±0.07ms	10.8±0.05ms	0.00%
counter scaling async/RW/{tasks:16,events:100000}	39.8±0.17ms	38.7±0.07ms	-2.76%
counter scaling async/RW/{tasks:16,events:10000}	4.3±0.01ms	4.2±0.01ms	-2.33%
counter scaling async/RW/{tasks:16,events:1000}	753.9±6.73µs	756.6±5.03µs	+0.36%
counter scaling async/RW/{tasks:32,events:100000}	48.7±0.18ms	48.3±0.12ms	-0.82%
counter scaling async/RW/{tasks:32,events:10000}	5.5±0.02ms	5.5±0.01ms	0.00%
counter scaling async/RW/{tasks:32,events:1000}	1160.5±13.50µs	1178.3±12.92µs	+1.53%
counter scaling async/RW/{tasks:4,events:100000}	29.1±0.05ms	28.4±0.07ms	-2.41%
counter scaling async/RW/{tasks:4,events:10000}	3.0±0.01ms	3.0±0.03ms	0.00%
counter scaling async/RW/{tasks:4,events:1000}	408.0±4.61µs	400.9±2.37µs	-1.74%
counter scaling async/RW/{tasks:64,events:100000}	65.6±0.10ms	65.0±0.11ms	-0.91%
counter scaling async/RW/{tasks:64,events:10000}	7.6±0.03ms	7.6±0.04ms	0.00%
counter scaling async/RW/{tasks:64,events:1000}	1869.9±26.89µs	1873.0±23.87µs	+0.17%
counter sync/pct-narrow	2.2±0.01ms	1945.5±23.85µs	-11.57%
counter sync/pct-wide	21.5±0.13ms	21.2±0.14ms	-1.40%
counter sync/random-narrow	3.1±0.01ms	3.1±0.02ms	0.00%
counter sync/random-wide	9.6±0.08ms	9.5±0.07ms	-1.04%
create async/pct-narrow	1319.0±19.69µs	1494.0±11.94µs	+13.27%
create async/pct-wide	37.6±0.14ms	38.4±0.18ms	+2.13%
create async/random-narrow	1311.6±10.76µs	1514.0±35.31µs	+15.43%
create async/random-wide	20.2±0.09ms	20.6±0.12ms	+1.98%
create sync/pct-narrow	1401.1±10.43µs	1411.8±18.46µs	+0.76%
create sync/pct-wide	36.6±0.16ms	36.7±0.24ms	+0.27%
create sync/random-narrow	1226.4±11.82µs	1234.0±19.39µs	+0.62%
create sync/random-wide	20.1±0.08ms	20.5±0.09ms	+1.99%
lock scaling sync/RW/{tasks:1024,events:100000}	301.1±1.45s	304.9±0.91s	+1.26%
lock scaling sync/RW/{tasks:128,events:100000}	38.6±0.15s	39.2±0.27s	+1.55%
lock scaling sync/RW/{tasks:128,events:10000}	3.6±0.03s	3.7±0.04s	+2.78%
lock scaling sync/RW/{tasks:16,events:100000}	4.3±0.03s	4.7±0.04s	+9.30%
lock scaling sync/RW/{tasks:16,events:10000}	416.7±1.61ms	457.6±2.97ms	+9.82%
lock scaling sync/RW/{tasks:16,events:1000}	39.0±0.26ms	42.3±0.23ms	+8.46%
lock scaling sync/RW/{tasks:32,events:100000}	9.2±0.05s	9.6±0.08s	+4.35%
lock scaling sync/RW/{tasks:32,events:10000}	880.5±7.37ms	927.6±7.03ms	+5.35%
lock scaling sync/RW/{tasks:32,events:1000}	80.8±0.33ms	86.3±1.20ms	+6.81%
lock scaling sync/RW/{tasks:4,events:100000}	706.1±5.19ms	902.6±1.99ms	+27.83%
lock scaling sync/RW/{tasks:4,events:10000}	70.2±0.21ms	89.9±0.57ms	+28.06%
lock scaling sync/RW/{tasks:4,events:1000}	7.0±0.06ms	8.9±0.04ms	+27.14%
lock scaling sync/RW/{tasks:64,events:100000}	19.0±0.13s	19.5±0.12s	+2.63%
lock scaling sync/RW/{tasks:64,events:10000}	1824.6±17.69ms	1869.7±14.27ms	+2.47%
lock scaling sync/RW/{tasks:64,events:1000}	150.6±0.86ms	156.6±0.80ms	+3.98%
lock sync/pct-narrow	3.2±0.05ms	3.0±0.01ms	-6.25%
lock sync/pct-wide	22.8±0.23ms	22.4±0.11ms	-1.75%
lock sync/random-narrow	99.0±0.46ms	121.0±1.01ms	+22.22%
lock sync/random-wide	2.8±0.03s	2.9±0.03s	+3.57%