本文介紹如何使用TPC-C工具測試PolarDB-X(引擎版本MySQL 5.7和MySQL 8.0)數據庫的聯機交易處理(偏向OLTP能力),您可以按照本文的介紹自行測試進行對比,快速了解數據庫系統的性能。
背景信息
TPC-C是業界常用的一套Benchmark,由TPC委員會制定發布,用于評測數據庫的聯機交易處理(偏向OLTP)能力。主要涉及10張表,包含了NewOrder(新訂單的生成)、Payment(訂單付款)、OrderStatus(最近訂單查詢)、Delivery(配送)和StockLevel(庫存缺貨狀態分析)等五類業務事務模型。TPC-C使用tpmC值(Transactions per Minute)來衡量系統最大有效吞吐量(MQTh,Max Qualified Throughput),其中Transactions以NewOrder Transaction為準,即最終衡量單位為每分鐘處理的新訂單數。
本文中TPC-C的實現基于TPC-C的基準測試,并不能與已發布的TPC-C基準測試結果相比較,本文中的測試并不符合TPC-C基準測試的所有要求。
測試設計
測試數據量
基于1000 Warehouse,其中主要表的數據量如下:
bmsql_order_line表3億行
bmsql_stock表1億行
bmsql_customer、bmsql_history、bmsql_order各3000萬行
測試所用實例規格
節點規格
節點數
4C32G
2
4C32G
4
8C64G
2
8C64G
4
測試所用壓力機規格
ecs.g6.8xlarge(32 vCPU,128 GB內存)
測試方法
準備壓力機ECS
準備一個ECS(建議配置為32 vCPU 128 GB內存,避免在測試高規格集群時,壓力機成為瓶頸),后續操作步驟中涉及的數據準備、運行壓測等使用的都是這臺ECS機器。
說明測試所用ECS需要部署在VPC網絡內。請記錄該VPC的名稱和ID,后續的所有實例都將部署在該VPC內。
準備壓測所用PolarDB-X實例
創建PolarDB-X實例(按需選擇引擎版本MySQL 5.7或MySQL 8.0),詳細操作步驟請參見創建實例。
在實例中創建一個待壓測的數據庫(本測試中數據庫名為tpcc_1000),詳細操作步驟請參見創建數據庫。
CREATE DATABASE tpcc_1000;
說明需保證ECS和PolarDB-X實例在同一個VPC中。
調整實例參數
說明為了在壓測場景下達到最佳性能,需要調整部分PolarDB-X計算層實例參數。
修改參數ENABLE_COROUTINE的值為true,XPROTO_MAX_DN_CONCURRENT和XPROTO_MAX_DN_WAIT_CONNECTION的值為4000,詳細操作步驟請參見參數設置。
通過命令行連接到PolarDB-X實例,在同一會話內執行如下SQL語句,關閉日志記錄與CPU采樣統計:
set global RECORD_SQL=false; set global MPP_METRIC_LEVEL=0; set global ENABLE_CPU_PROFILE=false; set global ENABLE_TRANS_LOG=false;
準備壓測數據
準備壓測工具
說明BenchmarkSQL默認不支持MySQL協議,需要進行工具改造適配(此處提供了基于開源BenchmarkSQL 5.0改動后的源碼以及編譯后的jar包)。
下載壓測工具包benchmarksql.tar.gz并上傳至壓力機ECS上,執行以下命令進行解壓:
tar xzvf benchmarksql.tar.gz
壓測配置
在ECS上執行如下命令,修改props.mysql配置文件,并填入對應的PolarDB-X實例連接信息:
cd benchmarksql/run vi props.mysql
其中, 配置文件以及主要參數解釋如下:
db=mysql driver=com.mysql.jdbc.Driver conn=jdbc:mysql://{HOST}:{PORT}/tpcc?readOnlyPropagatesToServer=false&rewriteBatchedStatements=true&failOverReadOnly=false&connectTimeout=3000&socketTimeout=90000&allowMultiQueries=true&clobberStreamingResults=true&characterEncoding=utf8&netTimeoutForStreamingResults=0&autoReconnect=true user={USER} password={PASSWORD} warehouses=1000 loadWorkers=100 terminals=128 //To run specified transactions per terminal- runMins must equal zero runTxnsPerTerminal=0 //To run for specified minutes- runTxnsPerTerminal must equal zero runMins=5 //Number of total transactions per minute limitTxnsPerMin=0 //Set to true to run in 4.x compatible mode. Set to false to use the //entire configured database evenly. terminalWarehouseFixed=true //The following five values must add up to 100 //The default percentages of 45, 43, 4, 4 & 4 match the TPC-C spec newOrderWeight=45 paymentWeight=43 orderStatusWeight=4 deliveryWeight=4 stockLevelWeight=4 // Directory name to create for collecting detailed result data. // Comment this out to suppress. resultDirectory=my_result_%tY-%tm-%td_%tH%tM%tS // osCollectorScript=./misc/os_collector_linux.py // osCollectorInterval=1 // osCollectorSSHAddr=user@dbhost // osCollectorDevices=net_eth0 blk_sda
conn:連接串配置,需填入主機名{HOST}、端口號{PORT}
user:用戶名
password:密碼
warehouses:倉庫數
loadWorkers:導入數據并發數
terminals:壓測并發數
runMins:壓測時間
導入壓測數據
在壓力機ECS中執行如下命令導入壓測數據:
cd benchmarksql/run/sql.common cp tableCreates.sql.auto tableCreates.sql cd .. nohup ./runDatabaseBuild.sh props.mysql &
說明默認按照100并發導入,總共5億多條記錄,整體導入時間在小時級別,建議通過nohup推到后臺運行,避免ssh命令行斷開導致導入中斷。
驗證數據完整性
通過命令行連接到PolarDB-X實例執行以下SQL,若返回結果集均為空,證明數據完整。
select a.* from (Select w_id, w_ytd from bmsql_warehouse) a left join (select d_w_id, sum(d_ytd) as d_ytd_sum from bmsql_district group by d_w_id) b on a.w_id = b.d_w_id and a.w_ytd = b.d_ytd_sum where b.d_w_id is null; select a.* from (Select d_w_id, d_id, D_NEXT_O_ID - 1 as d_n_o_id from bmsql_district) a left join (select o_w_id, o_d_id, max(o_id) as o_id_max from bmsql_oorder group by o_w_id, o_d_id) b on a.d_w_id = b.o_w_id and a.d_id = b.o_d_id and a.d_n_o_id = b.o_id_max where b.o_w_id is null; select a.* from (Select d_w_id, d_id, D_NEXT_O_ID - 1 as d_n_o_id from bmsql_district) a left join (select no_w_id, no_d_id, max(no_o_id) as no_id_max from bmsql_new_order group by no_w_id, no_d_id) b on a.d_w_id = b.no_w_id and a.d_id = b.no_d_id and a.d_n_o_id = b.no_id_max where b.no_id_max is null; select * from (select (count(no_o_id)-(max(no_o_id)-min(no_o_id)+1)) as diff from bmsql_new_order group by no_w_id, no_d_id) a where diff != 0; select a.* from (select o_w_id, o_d_id, sum(o_ol_cnt) as o_ol_cnt_cnt from bmsql_oorder group by o_w_id, o_d_id) a left join (select ol_w_id, ol_d_id, count(ol_o_id) as ol_o_id_cnt from bmsql_order_line group by ol_w_id, ol_d_id) b on a.o_w_id = b.ol_w_id and a.o_d_id = b.ol_d_id and a.o_ol_cnt_cnt = b.ol_o_id_cnt where b.ol_w_id is null; select a.* from (select d_w_id, sum(d_ytd) as d_ytd_sum from bmsql_district group by d_w_id) a left join (Select w_id, w_ytd from bmsql_warehouse) b on a.d_w_id = b.w_id and a.d_ytd_sum = b.w_ytd where b.w_id is null;
執行壓測
執行如下命令運行TPC-C測試:
cd benchmarksql/run ./runBenchmark.sh props.mysql
運行后可以看到實時的tpmC數值,運行結束后會顯示平均的tpmC數值。
[2024/07/16 17:00:05.845] Average tpmC: 306979.98 Current tpmC: 308052.00 Memory Usage: 661MB / 3584MB [2024/07/16 17:00:10.845] Average tpmC: 307029.91 Current tpmC: 309876.00 Memory Usage: 1024MB / 3584MB [2024/07/16 17:00:15.845] Average tpmC: 307111.09 Current tpmC: 311820.00 Memory Usage: 429MB / 3584MB [2024/07/16 17:00:20.846] Average tpmC: 307108.95 Current tpmC: 306982.60 Memory Usage: 780MB / 3584MB 17:00:21,011 [Thread-508] INFO jTPCC : Term-00, Measured tpmC (NewOrders) = 307058.27 17:00:21,011 [Thread-508] INFO jTPCC : Term-00, Measured tpmTOTAL = 681928.39 17:00:21,011 [Thread-508] INFO jTPCC : Term-00, Transaction Count = 3411539 17:00:21,011 [Thread-508] INFO jTPCC : Term-00, 17:00:21,011 [Thread-508] INFO jTPCC : Term-00, 17:00:21,011 [Thread-508] INFO jTPCC : Term-00, Session Start = 2024-07-16 16:55:20 17:00:21,011 [Thread-508] INFO jTPCC : Term-00, Session End = 2024-07-16 17:00:21
測試結果
引擎版本MySQL 5.7
版本號:polardb-2.4.0_5.4.19-20240610_xcluster5.4.19-20240527,詳情請參見:版本發布說明。
規格 | 64并發 | 128并發 | 256并發 | 512并發 | 1024并發 |
4C32G*2 | 91858.36 | 107268.04 | 108894.07 | 106442.37 | 98404.9 |
4C32G*4 | 117329.67 | 178425.44 | 206076.83 | 210437.44 | 209218.11 |
8C64G*2 | 106817.2 | 145097.95 | 156306.53 | 152141.55 | 138043.88 |
8C64G*4 | 117888.5 | 208051.75 | 296975.34 | 316085.12 | 307058.28 |
引擎版本MySQL 8.0
版本號:polardb-2.4.0_5.4.19-20240610_xcluster8.4.19-20240523,詳情請參見:版本發布說明。
規格 | 64并發 | 128并發 | 256并發 | 512并發 | 1024并發 |
4C32G*2 | 71546.19 | 88074.26 | 85959.83 | 79893.78 | 67109.97 |
4C32G*4 | 88000.71 | 133363.91 | 166959.56 | 166549.16 | 158594.61 |
8C64G*2 | 89677.54 | 118498.21 | 117536.04 | 114574.98 | 101338.24 |
8C64G*4 | 101735.81 | 171088.45 | 240313.94 | 236207.55 | 203671.55 |