TPROCC

MDEV-32750 AHI ON FINDING PEAK USER THREADS: 10.4.10 vs 10.11.4 vs 11.8.4

Comparison: DELIVERY_ratio

Threads	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
8	16.774	22.575	18.022
16	17.096	22.264	17.942
24	17.014	22.133	17.902
32	17.450	21.883	17.788
48	19.308	21.925	17.772
64	39.089	22.682	17.763
96	59.815	22.046	17.808
128	53.553	21.484	17.739
256	45.395	21.241	17.872

System Info (per dataset)

Property	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Host	hz-bench-jeb2	hz-bench-jeb2	hz-bench-jeb2
CPU	AMD EPYC 9454 48-Core Processor	AMD EPYC 9454 48-Core Processor	AMD EPYC 9454 48-Core Processor
CPU Count	96	96	96
Core Count	48	48	48
Socket Count	1	1	1
OS	Linux	Linux	Linux
OS Version	AlmaLinux 9.8 (Olive Jaguar)	AlmaLinux 9.8 (Olive Jaguar)	AlmaLinux 9.8 (Olive Jaguar)
OS Kernel	5.14.0-687.29.1.el9_8.x86_64	5.14.0-687.29.1.el9_8.x86_64	5.14.0-687.29.1.el9_8.x86_64
RAM	124.98 GB	124.98 GB	124.98 GB

Database Info (per dataset)

Property	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Database Maker	mariadb	mariadb	mariadb
Database Version	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Engine	InnoDB	InnoDB	InnoDB
Install Dir	mariadb-10.4.10-linux-systemd-x86_64	mariadb-10.11.4	mariadb-11.8.4
DB Config Origin	USER_PROPERTIES_INLINE_BLOCK	USER_PROPERTIES_INLINE_BLOCK	USER_PROPERTIES_INLINE_BLOCK
DB Config Source File	MDEV-32750.tprocc.complex.cfg.ahi_on.properties	MDEV-32750.tprocc.complex.cfg.ahi_on.properties	MDEV-32750.tprocc.complex.cfg.ahi_on.properties
DB Generated Config Run File	mariadb_2026_10_1_00_54_12.cnf	mariadb_2026_10_1_21_12_17.cnf	mariadb_2026_10_2_14_21_18.cnf
Config Contents	query_cache_type=0 innodb_read_io_threads=24 thread_handling=pool-of-threads sort_buffer_size=2M event_scheduler=ON table_definition_cache=24000 innodb_buffer_pool_size=64G innodb_flush_log_at_trx_commit=1 innodb_flush_neighbors=0 innodb_log_buffer_size=4G optimizer_switch=index_merge=on,index_condition_pushdown=on,derived_merge=on,semijoin=on,materialization=on innodb_io_capacity_max=20000 innodb_flush_method=O_DIRECT binlog_stmt_cache_size=512K binlog_checksum=NONE read_buffer_size=8M join_buffer_size=256K innodb_log_file_size=2G max_connections=2000 log_slave_updates=ON innodb_write_io_threads=24 binlog_cache_size=512K slave_parallel_threads=24 performance_schema=ON query_cache_size=0 performance_schema_consumer_events_statements_history_long=OFF innodb_adaptive_hash_index=1 slave_parallel_mode=optimistic innodb_io_capacity=2000 binlog_format=STATEMENT performance_schema_consumer_events_statements_history=OFF read_rnd_buffer_size=8M innodb_buffer_pool_chunk_size=128M innodb_file_per_table=ON innodb_checksum_algorithm=CRC32 performance_schema_consumer_events_statements_current=ON table_open_cache=24000 innodb_buffer_pool_instances=1 table_open_cache_instances=1 sync_binlog=1	query_cache_type=0 innodb_read_io_threads=24 thread_handling=pool-of-threads sort_buffer_size=2M event_scheduler=ON table_definition_cache=24000 innodb_buffer_pool_size=64G innodb_flush_log_at_trx_commit=1 innodb_flush_neighbors=0 innodb_log_buffer_size=4G optimizer_switch=index_merge=on,index_condition_pushdown=on,derived_merge=on,semijoin=on,materialization=on innodb_io_capacity_max=20000 innodb_flush_method=O_DIRECT binlog_stmt_cache_size=512K binlog_checksum=NONE read_buffer_size=8M join_buffer_size=256K innodb_log_file_size=2G max_connections=2000 log_slave_updates=ON innodb_write_io_threads=24 binlog_cache_size=512K slave_parallel_threads=24 performance_schema=ON query_cache_size=0 performance_schema_consumer_events_statements_history_long=OFF innodb_adaptive_hash_index=1 slave_parallel_mode=optimistic innodb_io_capacity=2000 binlog_format=STATEMENT performance_schema_consumer_events_statements_history=OFF read_rnd_buffer_size=8M innodb_buffer_pool_chunk_size=128M innodb_file_per_table=ON innodb_checksum_algorithm=CRC32 performance_schema_consumer_events_statements_current=ON table_open_cache=24000 innodb_buffer_pool_instances=1 table_open_cache_instances=1 sync_binlog=1	query_cache_type=0 innodb_read_io_threads=24 thread_handling=pool-of-threads sort_buffer_size=2M event_scheduler=ON table_definition_cache=24000 innodb_buffer_pool_size=64G innodb_flush_log_at_trx_commit=1 innodb_flush_neighbors=0 innodb_log_buffer_size=4G optimizer_switch=index_merge=on,index_condition_pushdown=on,derived_merge=on,semijoin=on,materialization=on innodb_io_capacity_max=20000 innodb_flush_method=O_DIRECT binlog_stmt_cache_size=512K binlog_checksum=NONE read_buffer_size=8M join_buffer_size=256K innodb_log_file_size=2G max_connections=2000 log_slave_updates=ON innodb_write_io_threads=24 binlog_cache_size=512K slave_parallel_threads=24 performance_schema=ON query_cache_size=0 performance_schema_consumer_events_statements_history_long=OFF innodb_adaptive_hash_index=1 slave_parallel_mode=optimistic innodb_io_capacity=2000 binlog_format=STATEMENT performance_schema_consumer_events_statements_history=OFF read_rnd_buffer_size=8M innodb_buffer_pool_chunk_size=128M innodb_file_per_table=ON innodb_checksum_algorithm=CRC32 performance_schema_consumer_events_statements_current=ON table_open_cache=24000 innodb_buffer_pool_instances=1 table_open_cache_instances=1 sync_binlog=1

Property

10.4.10-MariaDB

10.11.4-MariaDB

11.8.4-MariaDB

Database Maker

mariadb

Database Version

10.4.10-MariaDB

10.11.4-MariaDB

11.8.4-MariaDB

Engine

InnoDB

Install Dir

mariadb-10.4.10-linux-systemd-x86_64

mariadb-10.11.4

mariadb-11.8.4

DB Config Origin

USER_PROPERTIES_INLINE_BLOCK

DB Config Source File

MDEV-32750.tprocc.complex.cfg.ahi_on.properties

DB Generated Config Run File

mariadb_2026_10_1_00_54_12.cnf

mariadb_2026_10_1_21_12_17.cnf

mariadb_2026_10_2_14_21_18.cnf

Config Contents

query_cache_type=0
innodb_read_io_threads=24
thread_handling=pool-of-threads
sort_buffer_size=2M
event_scheduler=ON
table_definition_cache=24000
innodb_buffer_pool_size=64G
innodb_flush_log_at_trx_commit=1
innodb_flush_neighbors=0
innodb_log_buffer_size=4G
optimizer_switch=index_merge=on,index_condition_pushdown=on,derived_merge=on,semijoin=on,materialization=on
innodb_io_capacity_max=20000
innodb_flush_method=O_DIRECT
binlog_stmt_cache_size=512K
binlog_checksum=NONE
read_buffer_size=8M
join_buffer_size=256K
innodb_log_file_size=2G
max_connections=2000
log_slave_updates=ON
innodb_write_io_threads=24
binlog_cache_size=512K
slave_parallel_threads=24
performance_schema=ON
query_cache_size=0
performance_schema_consumer_events_statements_history_long=OFF
innodb_adaptive_hash_index=1
slave_parallel_mode=optimistic
innodb_io_capacity=2000
binlog_format=STATEMENT
performance_schema_consumer_events_statements_history=OFF
read_rnd_buffer_size=8M
innodb_buffer_pool_chunk_size=128M
innodb_file_per_table=ON
innodb_checksum_algorithm=CRC32
performance_schema_consumer_events_statements_current=ON
table_open_cache=24000
innodb_buffer_pool_instances=1
table_open_cache_instances=1
sync_binlog=1

Test Info (per dataset)

Property	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Test Suite	hammerdb-tprocc	hammerdb-tprocc	hammerdb-tprocc
Test Name	TPROCC	TPROCC	TPROCC
Test Case Tag	MDEV32750_10.4.10_AHI_ON_FIND_PEAK_THREAD_COUNT	MDEV32750_10.11.4_AHI_ON_FIND_PEAK_THREAD_COUNT	MDEV32750_11.8.4_AHI_ON_FIND_PEAK_THREAD_COUNT
Duration	10	10	10
Iterations	3	3	3
Timestamp	2026-10-1 03:34:21	2026-10-1 22:03:24	2026-10-2 14:47:13
AutoGen Prop File	hammerdb-tprocc_TAF_AUTO_GEN_2026_10_1_00_54_28.properties	hammerdb-tprocc_TAF_AUTO_GEN_2026_10_1_21_12_25.properties	hammerdb-tprocc_TAF_AUTO_GEN_2026_10_2_14_21_30.properties
Checksum after run	true	true	true
Checksum after setup	true	true	true
Db type	maria	maria	maria
Include html metrics	true	true	true
Include html result	true	true	true
Include html tcount	true	true	true
Include html timing	true	true	true
Include json metrics	true	true	true
Include json result	true	true	true
Include json tcount	true	true	true
Include json timing	true	true	true
Number of warehouses	500	500	500
Setup virtual user count	unknown	25	25

Property

10.4.10-MariaDB

10.11.4-MariaDB

11.8.4-MariaDB

Test Suite

hammerdb-tprocc

Test Name

TPROCC

Test Case Tag

MDEV32750_10.4.10_AHI_ON_FIND_PEAK_THREAD_COUNT

MDEV32750_10.11.4_AHI_ON_FIND_PEAK_THREAD_COUNT

MDEV32750_11.8.4_AHI_ON_FIND_PEAK_THREAD_COUNT

Duration

Iterations

Timestamp

2026-10-1 03:34:21

2026-10-1 22:03:24

2026-10-2 14:47:13

AutoGen Prop File

hammerdb-tprocc_TAF_AUTO_GEN_2026_10_1_00_54_28.properties

hammerdb-tprocc_TAF_AUTO_GEN_2026_10_1_21_12_25.properties

hammerdb-tprocc_TAF_AUTO_GEN_2026_10_2_14_21_30.properties

Checksum after run

true

Checksum after setup

true

Db type

maria

Include html metrics

true

Include html result

true

Include html tcount

true

Include html timing

true

Include json metrics

true

Include json result

true

Include json tcount

true

Include json timing

true

Number of warehouses

500

Setup virtual user count

unknown

Thread Count: 8

Metric	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Mean	16.77	22.58	18.02
Max	16.86	22.75	18.08
Min	16.65	22.32	17.97
StdDev	0.09	0.19	0.04
CoV	0.01	0.01	0.00
Median (p50)	16.82	22.66	18.02
p95	16.85	22.74	18.07
p99	16.86	22.75	18.08
Skewness	-0.59	-0.59	0.16
Iteration 1	16.65	22.75	18.02
Iteration 2	16.82	22.32	17.97
Iteration 3	16.86	22.66	18.08

Thread Count: 16

Metric	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Mean	17.10	22.26	17.94
Max	17.14	22.62	18.05
Min	17.07	21.94	17.84
StdDev	0.03	0.28	0.09
CoV	0.00	0.01	0.00
Median (p50)	17.08	22.23	17.95
p95	17.13	22.58	18.04
p99	17.14	22.61	18.04
Skewness	0.59	0.17	-0.05
Iteration 1	17.08	22.62	18.05
Iteration 2	17.14	21.94	17.95
Iteration 3	17.07	22.23	17.84

Thread Count: 24

Metric	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Mean	17.01	22.13	17.90
Max	17.18	22.74	17.93
Min	16.76	21.60	17.88
StdDev	0.18	0.47	0.02
CoV	0.01	0.02	0.00
Median (p50)	17.10	22.06	17.90
p95	17.17	22.67	17.92
p99	17.18	22.72	17.92
Skewness	-0.59	0.23	0.14
Iteration 1	17.18	22.74	17.90
Iteration 2	17.10	22.06	17.88
Iteration 3	16.76	21.60	17.93

Thread Count: 32

Metric	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Mean	17.45	21.88	17.79
Max	17.49	22.35	17.95
Min	17.39	21.61	17.67
StdDev	0.04	0.33	0.12
CoV	0.00	0.02	0.01
Median (p50)	17.47	21.69	17.74
p95	17.49	22.29	17.93
p99	17.49	22.34	17.94
Skewness	-0.64	0.68	0.54
Iteration 1	17.39	21.69	17.95
Iteration 2	17.47	22.35	17.67
Iteration 3	17.49	21.61	17.74

Thread Count: 48

Metric	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Mean	19.31	21.92	17.77
Max	19.60	22.16	17.95
Min	19.02	21.64	17.52
StdDev	0.24	0.21	0.18
CoV	0.01	0.01	0.01
Median (p50)	19.31	21.98	17.84
p95	19.57	22.14	17.94
p99	19.60	22.15	17.95
Skewness	0.01	-0.34	-0.51
Iteration 1	19.31	21.64	17.95
Iteration 2	19.02	22.16	17.84
Iteration 3	19.60	21.98	17.52

Thread Count: 64

Metric	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Mean	39.09	22.68	17.76
Max	40.09	22.93	17.88
Min	37.72	22.28	17.57
StdDev	1.00	0.29	0.14
CoV	0.03	0.01	0.01
Median (p50)	39.46	22.83	17.84
p95	40.03	22.92	17.87
p99	40.08	22.93	17.88
Skewness	-0.51	-0.64	-0.68
Iteration 1	39.46	22.93	17.57
Iteration 2	40.09	22.83	17.88
Iteration 3	37.72	22.28	17.84

Thread Count: 96

Metric	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Mean	59.81	22.05	17.81
Max	61.53	22.20	17.94
Min	57.56	21.79	17.72
StdDev	1.67	0.18	0.09
CoV	0.03	0.01	0.01
Median (p50)	60.36	22.14	17.77
p95	61.41	22.20	17.92
p99	61.50	22.20	17.93
Skewness	-0.46	-0.64	0.59
Iteration 1	60.36	22.14	17.77
Iteration 2	61.53	22.20	17.72
Iteration 3	57.56	21.79	17.94

Thread Count: 128

Metric	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Mean	53.55	21.48	17.74
Max	54.06	21.78	17.91
Min	53.12	21.21	17.63
StdDev	0.39	0.23	0.12
CoV	0.01	0.01	0.01
Median (p50)	53.47	21.46	17.68
p95	54.00	21.75	17.88
p99	54.05	21.77	17.90
Skewness	0.30	0.14	0.61
Iteration 1	53.47	21.78	17.68
Iteration 2	53.12	21.46	17.63
Iteration 3	54.06	21.21	17.91

Thread Count: 256

Metric	10.4.10-MariaDB	10.11.4-MariaDB	11.8.4-MariaDB
Mean	45.40	21.24	17.87
Max	45.76	21.41	17.92
Min	45.04	21.06	17.81
StdDev	0.29	0.14	0.05
CoV	0.01	0.01	0.00
Median (p50)	45.39	21.26	17.89
p95	45.72	21.39	17.92
p99	45.75	21.41	17.92
Skewness	0.03	-0.15	-0.44
Iteration 1	45.04	21.41	17.89
Iteration 2	45.39	21.26	17.92
Iteration 3	45.76	21.06	17.81