[improvement](backend balance) adjust the capacity cofficient of be load score #26874

[yujun777]

cherry pick from #26874

[yujun777]

run buildall

[doris-robot]

Thank you for your contribution to Apache Doris.
Don't know what should be done next? See How to process your PR

[dataroaring]

LGTM

[github-actions]

PR approved by at least one committer and no changes requested.

[github-actions]

PR approved by anyone and no changes requested.

[doris-robot]

TPC-H: Total hot run time: 49643 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpch-tools
Tpch sf100 test result on commit 5c58475822aeb35efb306dd99e9d39afd5012f5f, data reload: false

------ Round 1 ----------------------------------
q1	17732	4350	4340	4340
q2	2031	155	140	140
q3	10415	1873	1956	1873
q4	10367	1228	1305	1228
q5	8430	3957	3980	3957
q6	226	125	122	122
q7	2066	1583	1605	1583
q8	9544	2701	2709	2701
q9	13931	10490	10268	10268
q10	8639	3518	3503	3503
q11	427	245	237	237
q12	469	304	303	303
q13	18395	3980	4085	3980
q14	355	340	312	312
q15	504	454	459	454
q16	679	598	594	594
q17	1141	944	928	928
q18	7297	6816	6867	6816
q19	1685	1567	1525	1525
q20	559	336	311	311
q21	4528	4218	4070	4070
q22	511	406	398	398
Total cold run time: 119931 ms
Total hot run time: 49643 ms

----- Round 2, with runtime_filter_mode=off -----
q1	4361	4355	4330	4330
q2	317	219	225	219
q3	4213	4169	4153	4153
q4	2767	2766	2757	2757
q5	7306	7385	7499	7385
q6	237	126	124	124
q7	3367	2966	2985	2966
q8	4497	4707	4667	4667
q9	17335	17215	16970	16970
q10	4268	4285	4280	4280
q11	750	675	669	669
q12	1022	869	867	867
q13	6870	3720	3733	3720
q14	459	425	425	425
q15	502	459	458	458
q16	758	695	709	695
q17	3784	3907	3819	3819
q18	8737	8732	8868	8732
q19	1698	1676	1694	1676
q20	2396	2120	2123	2120
q21	8476	8446	8525	8446
q22	1025	929	929	929
Total cold run time: 85145 ms
Total hot run time: 80407 ms

[doris-robot]

TPC-DS: Total hot run time: 242452 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpcds-tools
TPC-DS sf100 test result on commit 5c58475822aeb35efb306dd99e9d39afd5012f5f, data reload: false

query1	917	406	375	375
query2	6552	2207	1872	1872
query3	6917	202	206	202
query4	19974	17957	18123	17957
query5	19708	6517	6647	6517
query6	296	215	227	215
query7	4156	316	295	295
query8	250	251	254	251
query9	3190	2714	2658	2658
query10	417	277	300	277
query11	11364	10706	10707	10706
query12	118	72	79	72
query13	5581	639	629	629
query14	17535	13724	13810	13724
query15	354	252	243	243
query16	6421	257	262	257
query17	1738	1464	867	867
query18	2310	403	404	403
query19	204	148	153	148
query20	75	80	73	73
query21	192	94	95	94
query22	4988	4952	5108	4952
query23	32428	31916	32111	31916
query24	7004	6545	6513	6513
query25	525	421	448	421
query26	525	165	167	165
query27	1806	298	297	297
query28	6065	2218	2194	2194
query29	2836	2832	2720	2720
query30	242	160	164	160
query31	893	724	734	724
query32	67	62	60	60
query33	410	249	248	248
query34	839	461	506	461
query35	1111	917	906	906
query36	1381	1409	1428	1409
query37	93	60	58	58
query38	3135	2896	2927	2896
query39	1373	1333	1323	1323
query40	203	100	95	95
query41	35	33	31	31
query42	90	95	80	80
query43	631	557	590	557
query44	1150	710	716	710
query45	359	228	225	225
query46	1222	974	979	974
query47	1926	1715	1673	1673
query48	990	698	666	666
query49	616	365	372	365
query50	888	608	615	608
query51	5545	5464	5393	5393
query52	84	91	77	77
query53	446	312	322	312
query54	2656	2434	2478	2434
query55	90	81	83	81
query56	226	195	185	185
query57	1250	1185	1085	1085
query58	214	203	201	201
query59	3470	3355	3289	3289
query60	198	188	204	188
query61	82	83	79	79
query62	779	528	482	482
query63	474	336	329	329
query64	2484	1511	1394	1394
query65	3634	3570	3554	3554
query66	792	370	364	364
query67	15957	15912	15866	15866
query68	8029	677	677	677
query69	578	337	342	337
query70	1816	1684	1795	1684
query71	399	308	312	308
query72	6485	3389	3406	3389
query73	733	316	320	316
query74	6346	5817	5862	5817
query75	4560	3683	3649	3649
query76	4518	1183	1135	1135
query77	546	274	254	254
query78	31504	51956	50551	50551
query79	15671	661	649	649
query80	4849	384	382	382
query81	579	229	240	229
query82	1101	104	99	99
query83	335	138	131	131
query84	254	69	71	69
query85	2172	282	271	271
query86	448	368	360	360
query87	3269	3004	3008	3004
query88	7140	2330	2320	2320
query89	464	272	295	272
query90	2502	207	210	207
query91	159	125	126	125
query92	62	49	53	49
query93	6358	563	631	563
query94	1662	208	216	208
query95	1129	1078	1061	1061
query96	651	332	329	329
query97	6430	6447	6404	6404
query98	191	175	168	168
query99	3656	959	880	880
Total cold run time: 345077 ms
Total hot run time: 242452 ms

[doris-robot]

ClickBench: Total hot run time: 30.76 s

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/clickbench-tools
ClickBench test result on commit 5c58475822aeb35efb306dd99e9d39afd5012f5f, data reload: false

query1	0.03	0.02	0.02
query2	0.06	0.03	0.02
query3	0.24	0.04	0.06
query4	1.82	0.08	0.07
query5	0.53	0.52	0.52
query6	1.22	0.62	0.61
query7	0.02	0.01	0.01
query8	0.03	0.02	0.03
query9	0.52	0.49	0.49
query10	0.54	0.54	0.52
query11	0.11	0.08	0.08
query12	0.12	0.10	0.09
query13	0.62	0.62	0.61
query14	0.78	0.79	0.80
query15	0.80	0.76	0.76
query16	0.36	0.39	0.37
query17	1.02	1.01	0.98
query18	0.22	0.26	0.25
query19	1.91	1.83	1.84
query20	0.02	0.01	0.02
query21	15.48	0.56	0.54
query22	2.03	1.78	1.26
query23	17.22	1.03	1.09
query24	4.32	1.11	1.27
query25	1.51	0.11	0.11
query26	0.23	0.15	0.13
query27	0.12	0.11	0.11
query28	8.18	0.72	0.71
query29	12.64	2.37	2.39
query30	0.52	0.51	0.52
query31	2.83	0.37	0.39
query32	3.41	0.50	0.49
query33	3.05	3.04	3.07
query34	15.25	4.82	4.79
query35	4.84	4.83	4.83
query36	1.06	1.03	1.00
query37	0.06	0.05	0.05
query38	0.04	0.02	0.02
query39	0.02	0.02	0.01
query40	0.16	0.14	0.14
query41	0.06	0.02	0.02
query42	0.02	0.01	0.02
query43	0.02	0.02	0.02
Total cold run time: 104.04 s
Total hot run time: 30.76 s

[doris-robot]

Load test result on machine: 'aliyun_ecs.c7a.8xlarge_32C64G'

Load test result on commit 5c58475822aeb35efb306dd99e9d39afd5012f5f with default session variables
Stream load json:         19 seconds loaded 2358488459 Bytes, about 118 MB/s
Stream load orc:          59 seconds loaded 1101869774 Bytes, about 17 MB/s
Stream load parquet:      31 seconds loaded 861443392 Bytes, about 26 MB/s
Insert into select:       21.9 seconds inserted 10000000 Rows, about 456K ops/s