GreatSQL vs MySQL性能測試來了，速圍觀~

• GreatSQL社區原創內容未經授權不得隨意使用，轉載請聯繫小編並註明來源。
• GreatSQL是MySQL的國產分支版本，使用上與MySQL一致。

1.結論先行

1. 無論ibp（innodb_buffer_pool_size）是否充足，MySQL的性能都遠不如GreatSQL。

2. MySQL的性能平均約為GreatSQL的70%（最高84.5%，最低61.7%）。

3. 在ibp充分的情況下，隨著併發數的增加，MySQL並沒有表現出該有的性能提升，反倒掉頭向下，可見還是不夠穩定。

4. 在ibp不夠的情況下，GreatSQL開啟thread pool性能有所提升；當ibp充足的情況下，區別就不大了。

MySQL vs GreatSQL性能數據對比

各資料庫版本分別為

• MySQL 8.0.30 MySQL Community Server - GPL

• GreatSQL 8.0.25-16 GreatSQL, Release 16, Revision 8bb0e5af297

2.測試結果數據

2.1 ibp=48G

P.S，尾碼加上 thdpool 表示啟用了thread pool。

2.2 ibp=96G

2.3 ibp=144G

2.4 ibp=192G

2.5 GreatSQL不同ibp下的數據

2.6 MySQL不同ibp下的數據

測試環境&測試模式

3.1 測試工具

sysbench

/usr/local/bin/sysbench --version
sysbench 1.1.0

P.S，該版本是樓方鑫修改後的，增加了99.9%的RT統計值，例如：

[ 1s ] thds: 128 tps: 10285.06 qps: 208112.71 (r/w/o: 145769.21/41646.36/20697.15) lat (ms,99%,99%,99.9%): 24.83/24.83/28.67 err/s: 0.00 reconn/s: 0.00
[ 2s ] thds: 128 tps: 9968.88 qps: 199013.18 (r/w/o: 139399.13/39676.28/19937.76) lat (ms,99%,99%,99.9%): 20.00/20.00/24.38 err/s: 0.00 reconn/s: 0.00
[ 3s ] thds: 128 tps: 10214.11 qps: 204613.28 (r/w/o: 143162.59/41022.47/20428.22) lat (ms,99%,99%,99.9%): 19.29/19.29/23.10 err/s: 0.00 reconn/s: 0.00
[ 4s ] thds: 128 tps: 10227.68 qps: 204402.77 (r/w/o: 143127.62/40819.79/20455.37) lat (ms,99%,99%,99.9%): 17.95/17.95/20.00 err/s: 0.00 reconn/s: 0.00
[ 5s ] thds: 128 tps: 10466.08 qps: 209233.51 (r/w/o: 146497.06/41804.30/20932.15) lat (ms,99%,99%,99.9%): 19.29/19.29/21.11 err/s: 0.00 reconn/s: 0.00

3.2 測試模式

• 利用sysbench生成64個表，每個表1250萬條記錄。
• 資料庫總大小約191G。
• sysbench採用 oltp_read_write 模式。
• innodb_flush_method = O_DIRECT_NO_FSYNC。
• GreatSQL在需要時才開啟thread pool，MySQL不支持thread pool。
• 預設關閉InnoDB PQ。
• 因為沒有額外測試機，所以採用本地socket方式連接，順便關閉網路監聽設置。
• 測試資源有限，所以只測試單機模式，沒有開啟MGR。

3.3 測試機硬體配置

• 最大物理記憶體：376G，但資料庫分配IBP時分別為48G、96G、144G、192G，沒有將物理記憶體全部耗盡。
• 磁碟：Dell NVMe SSD

$ nvme list | grep nvme1
/dev/nvme1n1          90L0A019TAHR        
Dell Express Flash CD5 3.84T SFF         1     
2.86  TB /   3.84  TB    512   B +  0 B   1.1.1

• 文件系統、ioscheduler

$ df -hT | grep nvme1
/dev/nvme1n1p1 xfs       3.5T  2.9T  706G  81% /data_nvme1n1p1

$ cat /sys/block/nvme1n1/queue/scheduler
[none] mq-deadline kyber bfq

• CPU

Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              176
On-line CPU(s) list: 0-175
Thread(s) per core:  2
Core(s) per socket:  22
Socket(s):           4
NUMA node(s):        4
Vendor ID:           GenuineIntel
BIOS Vendor ID:      Intel
CPU family:          6
Model:               85
Model name:          Intel(R) Xeon(R) Gold 6238 CPU @ 2.10GHz
BIOS Model name:     Intel(R) Xeon(R) Gold 6238 CPU @ 2.10GHz
Stepping:            7
CPU MHz:             2800.924
CPU max MHz:         3700.0000
CPU min MHz:         1000.0000
BogoMIPS:            4200.00
L1d cache:           32K
L1i cache:           32K
L2 cache:            1024K
L3 cache:            30976K
NUMA node0 CPU(s):   0,4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96,100,104,108,112,116,120,124,128,132,136,140,144,148,152,156,160,164,168,172
NUMA node1 CPU(s):   1,5,9,13,17,21,25,29,33,37,41,45,49,53,57,61,65,69,73,77,81,85,89,93,97,101,105,109,113,117,121,125,129,133,137,141,145,149,153,157,161,165,169,173
NUMA node2 CPU(s):   2,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,66,70,74,78,82,86,90,94,98,102,106,110,114,118,122,126,130,134,138,142,146,150,154,158,162,166,170,174
NUMA node3 CPU(s):   3,7,11,15,19,23,27,31,35,39,43,47,51,55,59,63,67,71,75,79,83,87,91,95,99,103,107,111,115,119,123,127,131,135,139,143,147,151,155,159,163,167,171,175
Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 invpcid_single intel_ppin ssbd mba ibrs ibpb stibp ibrs_enhanced fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm mpx rdt_a avx512f avx512dq rdseed adx smap clflushopt clwb intel_pt avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts pku ospke avx512_vnni md_clear flush_l1d arch_capabilities

3.4 資料庫配置選項參數

[mysqld]
skip-networking
lower_case_table_names = 1
character-set-server = UTF8MB4
skip_name_resolve = 1
default_time_zone = "+8:00"

#performance setttings
lock_wait_timeout = 3600
open_files_limit    = 65535
back_log = 1024
max_connections = 1024
max_connect_errors = 1000000
table_open_cache = 1024
table_definition_cache = 1024
thread_stack = 512K
sort_buffer_size = 4M
join_buffer_size = 4M
read_buffer_size = 8M
read_rnd_buffer_size = 4M
bulk_insert_buffer_size = 64M
thread_cache_size = 768
interactive_timeout = 600
wait_timeout = 600
tmp_table_size = 32M
max_heap_table_size = 32M

#log settings
log_timestamps = SYSTEM
log_error = error.log
log_error_verbosity = 3
slow_query_log = 1
log_slow_extra = 1
#log_slow_verbosity = FULL
slow_query_log_file = slow.log
long_query_time = 0.01
log_queries_not_using_indexes = 1
log_throttle_queries_not_using_indexes = 60
min_examined_row_limit = 0
log_slow_admin_statements = 1
log_slow_slave_statements = 1
log_bin = binlog

binlog_format = ROW
sync_binlog = 1
binlog_cache_size = 4M
max_binlog_cache_size = 2G
max_binlog_size = 1G
binlog_rows_query_log_events = 1
binlog_expire_logs_seconds = 604800
#binlog_expire_logs_auto_purge = 1
binlog_checksum = CRC32
gtid_mode = ON
enforce_gtid_consistency = TRUE

#myisam settings
key_buffer_size = 32M
myisam_sort_buffer_size = 128M

#replication settings
#master_info_repository = TABLE
#relay_log_info_repository = TABLE
relay_log_recovery = 1
slave_parallel_type = LOGICAL_CLOCK
slave_parallel_workers = 2
binlog_transaction_dependency_tracking = WRITESET
slave_preserve_commit_order = 1
slave_checkpoint_period = 2

#innodb settings
transaction_isolation = REPEATABLE-READ
innodb_buffer_pool_size = 2G
innodb_buffer_pool_instances = 8
innodb_data_file_path = ibdata1:12M:autoextend
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 32M
innodb_log_file_size = 2G
innodb_log_files_in_group = 3
innodb_doublewrite_files = 2
innodb_max_undo_log_size = 4G
innodb_io_capacity = 400000
innodb_io_capacity_max = 800000
innodb_open_files = 65534
#本次測試採用O_DIRECT_NO_FSYNC模式
innodb_flush_method = O_DIRECT_NO_FSYNC
innodb_lru_scan_depth = 4000
innodb_lock_wait_timeout = 10
innodb_rollback_on_timeout = 1
innodb_print_all_deadlocks = 1
innodb_online_alter_log_max_size = 4G
innodb_print_ddl_logs = 0
innodb_status_file = 1
innodb_status_output = 0
innodb_status_output_locks = 1
innodb_sort_buffer_size = 67108864
#innodb_thread_concurrency = 176
#innodb_spin_wait_delay = 3
#innodb_sync_spin_loops = 10

#innodb monitor settings
innodb_monitor_enable = "module_innodb"
innodb_monitor_enable = "module_server"
innodb_monitor_enable = "module_dml"
innodb_monitor_enable = "module_ddl"
innodb_monitor_enable = "module_trx"
innodb_monitor_enable = "module_os"
innodb_monitor_enable = "module_purge"
innodb_monitor_enable = "module_log"
innodb_monitor_enable = "module_lock"
innodb_monitor_enable = "module_buffer"
innodb_monitor_enable = "module_index"
innodb_monitor_enable = "module_ibuf_system"
innodb_monitor_enable = "module_buffer_page"
innodb_monitor_enable = "module_adaptive_hash"

#pfs settings
performance_schema = 1
#performance_schema_instrument = '%memory%=on'
performance_schema_instrument = '%lock%=on'

#thread pool，需要開啟thread pool時才取消下麵兩行註釋
#thread_handling = 'pool-of-thread'
#thread_pool_stall_limit = 50