Btrfs tree lock perf

	A	B	C	D	E
1
2	timestamp(ns)	root tree	fs/subv tree	extent tree	other tree
3	0	0.15%	40.68%	4.39%	1.98%
4	1007797078	0.08%	59.85%	8.14%	3.05%
5	2010599244	0.07%	74.71%	11.98%	1.68%
6	3014516574	0.03%	88.54%	6.06%	1.20%
7	4021495437	0.05%	80.52%	12.32%	1.53%
8	5025122812	0.04%	95.16%	11.28%	0.81%
9	6027905311	0.06%	80.76%	16.00%	1.02%
10	7031653824	0.03%	80.28%	18.92%	1.22%
11	8034494283	0.06%	86.36%	12.98%	1.38%
12	9038579908	0.03%	75.84%	16.22%	1.21%
13	10043874801	0.04%	75.29%	16.53%	1.03%
14	11049583190	0.03%	83.93%	23.76%	1.78%
15	12054134890	0.03%	89.72%	17.29%	0.70%
16	13058524755	0.03%	85.49%	20.73%	0.70%
17	14062498711	0.04%	64.40%	23.50%	0.78%
18	15064703908	0.04%	65.08%	17.42%	1.09%
19	16067309066	0.03%	83.83%	19.04%	0.89%
20	17073260230	0.03%	71.49%	25.85%	1.59%
21	18078655371	0.04%	58.75%	26.39%	2.28%
22	19084008063	0.04%	50.01%	23.79%	0.94%
23	20086280326	0.05%	43.73%	10.29%	0.97%
24	21093322117	0.05%	50.33%	31.89%	0.93%
25	22096680497	0.04%	49.32%	26.32%	1.27%
26	23099641472	0.02%	51.07%	31.86%	1.07%
27	24102640748	0.07%	53.78%	28.93%	0.94%
28	25106516129	0.02%	40.47%	33.66%	1.81%
29	26109107190	0.01%	45.67%	44.60%	0.88%
30	27112538878	0.04%	43.44%	38.24%	1.57%
31	28115975565	0.04%	56.07%	29.51%	1.26%
32	29118167958	0.04%	45.47%	24.15%	1.72%
33	30124802034	0.04%	49.82%	24.85%	1.26%
34	31129372839	0.03%	36.55%	17.52%	1.51%
35	32133896075	0.04%	38.63%	14.53%	3.55%
36	33138732458	0.03%	31.27%	30.16%	1.37%
37	34141652366	0.04%	45.98%	14.29%	1.85%
38	35145088733	0.04%	46.35%	32.19%	0.78%
39	36148575534	0.04%	36.01%	39.36%	0.81%
40	37151520949	0.03%	42.45%	41.79%	4.95%
41	38154532118	0.06%	24.48%	22.45%	1.53%
42	39156993296	0.05%	35.69%	17.66%	2.61%
43	40161385345	0.05%	33.27%	20.60%	1.49%
44	41165871782	0.03%	42.90%	27.88%	1.45%
45	42172022702	0.06%	35.21%	17.39%	1.51%
46	43175958916	0.03%	31.23%	32.02%	1.43%
47	44178062052	0.04%	41.34%	23.00%	2.49%
48	45182397735	0.04%	45.56%	26.09%	1.44%
49	46187691005	0.05%	38.16%	25.88%	1.32%
50	47192532739	0.05%	26.89%	17.00%	2.34%
51	48198138866	0.03%	36.61%	21.23%	3.87%
52	49210366225	0.04%	29.39%	33.16%	1.00%
53	50213479947	0.05%	30.94%	30.84%	1.80%
54	51216124629	0.04%	27.11%	20.44%	2.76%
55	52218583652	0.05%	23.63%	26.69%	2.13%
56	53221490595	0.03%	22.90%	29.75%	2.16%
57	54224406525	0.05%	25.54%	26.04%	2.35%
58	55229370378	0.06%	21.78%	27.82%	2.54%
59	56232877828	0.02%	25.12%	24.20%	3.44%
60	57235300813	0.06%	22.29%	20.87%	1.55%
61	58238373727	0.05%	24.08%	28.81%	1.86%
62	59241363687	0.04%	28.08%	27.84%	1.00%
63	60244615738	0.05%	29.45%	30.23%	2.55%
64	61248130762	0.04%	19.47%	36.40%	1.98%
65	62251201994	0.15%	31.41%	22.20%	1.66%
66	63255615614	0.04%	25.97%	16.54%	1.79%
67	64259289416	0.04%	28.64%	19.97%	1.38%
68	65261685191	0.03%	31.11%	12.62%	1.80%
69	66264350481	0.05%	30.89%	11.22%	2.05%
70	67267220616	0.04%	21.39%	23.18%	1.60%
71	68270448000	0.04%	21.14%	12.87%	3.25%
72	69274631609	0.06%	23.30%	13.94%	2.52%
73	70282431021	0.05%	24.12%	18.68%	1.34%
74	71287373794	0.06%	18.97%	18.81%	2.03%
75	72290809049	0.05%	22.80%	12.28%	1.38%
76	73294191083	0.08%	13.37%	17.62%	1.43%
77	74297111653	0.03%	23.40%	20.56%	2.65%
78	75299893331	0.03%	21.55%	24.62%	2.47%
79	76305301527	0.06%	29.04%	28.60%	1.38%
80	77310935216	0.03%	37.14%	29.48%	2.02%
81	78316011661	0.04%	31.15%	23.88%	3.20%
82	79319739333	0.11%	21.93%	19.59%	2.84%
83	80324532555	0.05%	17.58%	25.31%	1.27%
84	81328287781	0.04%	15.87%	9.18%	0.92%
85	82331998202	0.06%	22.67%	17.31%	1.68%
86	83335678776	0.06%	21.84%	25.90%	2.37%
87	84340268636	0.05%	29.11%	16.29%	2.03%
88	85343407254	0.04%	16.27%	33.51%	1.45%
89	86346995987	0.09%	30.78%	12.36%	2.47%
90	87349238244	0.05%	13.53%	28.51%	1.82%
91	88353422263	0.06%	13.61%	22.42%	0.99%
92	89357352957	0.05%	16.27%	30.06%	2.32%
93	90360443534	0.06%	15.29%	17.39%	1.86%
94	91363853503	0.02%	14.12%	10.31%	0.97%
95	92368877197	0.03%	20.37%	23.01%	2.11%
96	93374681537	0.04%	21.07%	28.86%	2.80%
97	94379445564	0.03%	21.76%	21.79%	2.52%
98	95381583124	0.05%	13.38%	25.40%	1.48%
99	96384530374	0.04%	26.03%	30.42%	2.55%
100	97388570132	0.07%	15.75%	19.03%	2.83%