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How to Run CH-benCHmark Test on TiDB

This document describes how to test TiDB using CH-benCHmark.

CH-benCHmark is a mixed workload containing both TPC-C and TPC-H tests. It is the most common workload to test HTAP systems. For more information, see The mixed workload CH-benCHmark.

Before running the CH-benCHmark test, you need to deploy TiFlash first, which is a TiDB's HTAP component. After you deploy TiFlash and create TiFlash replicas, TiKV will replicate the latest data of TPC-C online transactions to TiFlash in real time, and the TiDB optimizer will automatically push down OLAP queries from TPC-H workload to the MPP engine of TiFlash for efficient execution.

The CH-benCHmark test in this document is implemented based on go-tpc. You can download the test program using the following TiUP command:

tiup install bench

For detailed usage of the TiUP Bench component, see TiUP Bench.

Load data

Load TPC-C data

Loading data is usually the most time-consuming and problematic stage of the entire TPC-C test.

Taking 1000 warehouses as an example, you can execute the following TiUP command in shell for data load and test. Note that you need to replace 172.16.5.140 and 4000 in this document with your TiDB host and port values.

tiup bench tpcc -H 172.16.5.140 -P 4000 -D tpcc --warehouses 1000 prepare -T 32

Depending on different machine configurations, this loading process might take a few hours. If the cluster size is small, you can use a smaller warehouse value for the test.

After the data is loaded, you can execute the tiup bench tpcc -H 172.16.5.140 -P 4000 -D tpcc --warehouses 1000 check command to validate the data correctness.

Load additional tables and views required for TPC-H

Run the following TiUP command in the shell:

tiup bench ch -H 172.16.5.140 -P 4000 -D tpcc prepare

The following is the log output:

creating nation
creating region
creating supplier
generating nation table
generate nation table done
generating region table
generate region table done
generating suppliers table
generate suppliers table done
creating view revenue1

Create TiFlash replicas

After TiFlash is deployed, TiFlash does not automatically replicate TiKV data. You need to execute the following SQL statement to create TiFlash replicas for the tpcc database. Once the specified TiFlash replicas are created, TiKV automatically replicates the latest data to TiFlash in real-time. In the following example, two TiFlash nodes are deployed in the cluster and the replica number is set to 2.

ALTER DATABASE tpcc SET tiflash replica 2;

To check whether the replication of all tables in the tpcc database is complete, execute the following statement, in which the WHERE clause is used to specify the databases and tables to be checked. If you want to check the replication status of all databases, remove the WHERE clause from the statement.

SELECT * FROM information_schema.tiflash_replica WHERE TABLE_SCHEMA = 'tpcc';

In the result of the above statement:

  • AVAILABLE indicates whether the TiFlash replica of a specific table is available or not. 1 means available and 0 means unavailable. Once a replica becomes available, this status does not change anymore. If you use DDL statements to modify the number of replicas, the replication progress will be recalculated.
  • PROGRESS means the progress of the replication. The value is between 0.0 and 1.0. 1.0 means at least one replica is replicated.

Collect statistics

To ensure that the TiDB optimizer can generate the optimal execution plan, execute the following SQL statements to collect statistics in advance.

analyze table customer;
analyze table district;
analyze table history;
analyze table item;
analyze table new_order;
analyze table order_line;
analyze table orders;
analyze table stock;
analyze table warehouse;
analyze table nation;
analyze table region;
analyze table supplier;

Run the test

Taking 50 TP concurrency and 1 AP concurrency as an example, execute the following command to run the test:

go-tpc ch --host 172.16.5.140 -P4000 --warehouses 1000 run -D tpcc -T 50 -t 1 --time 1h

During the test, test results are continuously printed on the console. For example:

[Current] NEW_ORDER - Takes(s): 10.0, Count: 13524, TPM: 81162.0, Sum(ms): 998317.6, Avg(ms): 73.9, 50th(ms): 71.3, 90th(ms): 100.7, 95th(ms): 113.2, 99th(ms): 159.4, 99.9th(ms): 209.7, Max(ms): 243.3
[Current] ORDER_STATUS - Takes(s): 10.0, Count: 1132, TPM: 6792.7, Sum(ms): 16196.6, Avg(ms): 14.3, 50th(ms): 13.1, 90th(ms): 24.1, 95th(ms): 27.3, 99th(ms): 37.7, 99.9th(ms): 50.3, Max(ms): 52.4
[Current] PAYMENT - Takes(s): 10.0, Count: 12977, TPM: 77861.1, Sum(ms): 773982.0, Avg(ms): 59.7, 50th(ms): 56.6, 90th(ms): 88.1, 95th(ms): 100.7, 99th(ms): 151.0, 99.9th(ms): 201.3, Max(ms): 243.3
[Current] STOCK_LEVEL - Takes(s): 10.0, Count: 1134, TPM: 6806.0, Sum(ms): 31220.9, Avg(ms): 27.5, 50th(ms): 25.2, 90th(ms): 37.7, 95th(ms): 44.0, 99th(ms): 71.3, 99.9th(ms): 117.4, Max(ms): 125.8
[Current] Q11    - Count: 1, Sum(ms): 3682.9, Avg(ms): 3683.6
[Current] DELIVERY - Takes(s): 10.0, Count: 1167, TPM: 7002.6, Sum(ms): 170712.9, Avg(ms): 146.3, 50th(ms): 142.6, 90th(ms): 192.9, 95th(ms): 209.7, 99th(ms): 251.7, 99.9th(ms): 335.5, Max(ms): 385.9
[Current] NEW_ORDER - Takes(s): 10.0, Count: 13238, TPM: 79429.5, Sum(ms): 1010795.3, Avg(ms): 76.4, 50th(ms): 75.5, 90th(ms): 104.9, 95th(ms): 117.4, 99th(ms): 159.4, 99.9th(ms): 234.9, Max(ms): 352.3
[Current] ORDER_STATUS - Takes(s): 10.0, Count: 1224, TPM: 7350.6, Sum(ms): 17874.1, Avg(ms): 14.6, 50th(ms): 13.6, 90th(ms): 23.1, 95th(ms): 27.3, 99th(ms): 37.7, 99.9th(ms): 54.5, Max(ms): 60.8
[Current] PAYMENT - Takes(s): 10.0, Count: 12650, TPM: 75901.1, Sum(ms): 761981.3, Avg(ms): 60.3, 50th(ms): 56.6, 90th(ms): 88.1, 95th(ms): 104.9, 99th(ms): 159.4, 99.9th(ms): 218.1, Max(ms): 318.8
[Current] STOCK_LEVEL - Takes(s): 10.0, Count: 1179, TPM: 7084.9, Sum(ms): 32829.8, Avg(ms): 27.9, 50th(ms): 26.2, 90th(ms): 37.7, 95th(ms): 44.0, 99th(ms): 71.3, 99.9th(ms): 100.7, Max(ms): 117.4
[Current] Q12    - Count: 1, Sum(ms): 9945.8, Avg(ms): 9944.7
[Current] Q13    - Count: 1, Sum(ms): 1729.6, Avg(ms): 1729.6
...

After the test is finished, the test summary results are printed. For example:

Finished: 50 OLTP workers, 1 OLAP workers
[Summary] DELIVERY - Takes(s): 3599.7, Count: 501795, TPM: 8363.9, Sum(ms): 63905178.8, Avg(ms): 127.4, 50th(ms): 125.8, 90th(ms): 167.8, 95th(ms): 184.5, 99th(ms): 226.5, 99.9th(ms): 318.8, Max(ms): 604.0
[Summary] DELIVERY_ERR - Takes(s): 3599.7, Count: 14, TPM: 0.2, Sum(ms): 1027.7, Avg(ms): 73.4, 50th(ms): 71.3, 90th(ms): 109.1, 95th(ms): 109.1, 99th(ms): 113.2, 99.9th(ms): 113.2, Max(ms): 113.2
[Summary] NEW_ORDER - Takes(s): 3599.7, Count: 5629221, TPM: 93826.9, Sum(ms): 363758020.7, Avg(ms): 64.6, 50th(ms): 62.9, 90th(ms): 88.1, 95th(ms): 100.7, 99th(ms): 130.0, 99.9th(ms): 184.5, Max(ms): 570.4
[Summary] NEW_ORDER_ERR - Takes(s): 3599.7, Count: 20, TPM: 0.3, Sum(ms): 404.2, Avg(ms): 20.2, 50th(ms): 18.9, 90th(ms): 37.7, 95th(ms): 50.3, 99th(ms): 56.6, 99.9th(ms): 56.6, Max(ms): 56.6
[Summary] ORDER_STATUS - Takes(s): 3599.8, Count: 500318, TPM: 8339.0, Sum(ms): 7135956.6, Avg(ms): 14.3, 50th(ms): 13.1, 90th(ms): 24.1, 95th(ms): 27.3, 99th(ms): 37.7, 99.9th(ms): 50.3, Max(ms): 385.9
[Summary] PAYMENT - Takes(s): 3599.8, Count: 5380815, TPM: 89684.8, Sum(ms): 269863092.5, Avg(ms): 50.2, 50th(ms): 48.2, 90th(ms): 75.5, 95th(ms): 88.1, 99th(ms): 125.8, 99.9th(ms): 184.5, Max(ms): 1073.7
[Summary] PAYMENT_ERR - Takes(s): 3599.8, Count: 11, TPM: 0.2, Sum(ms): 313.0, Avg(ms): 28.5, 50th(ms): 10.0, 90th(ms): 67.1, 95th(ms): 67.1, 99th(ms): 88.1, 99.9th(ms): 88.1, Max(ms): 88.1
[Summary] STOCK_LEVEL - Takes(s): 3599.8, Count: 500467, TPM: 8341.5, Sum(ms): 13208726.4, Avg(ms): 26.4, 50th(ms): 25.2, 90th(ms): 37.7, 95th(ms): 44.0, 99th(ms): 62.9, 99.9th(ms): 96.5, Max(ms): 570.4
[Summary] STOCK_LEVEL_ERR - Takes(s): 3599.8, Count: 2, TPM: 0.0, Sum(ms): 7.6, Avg(ms): 3.7, 50th(ms): 3.1, 90th(ms): 4.7, 95th(ms): 4.7, 99th(ms): 4.7, 99.9th(ms): 4.7, Max(ms): 4.7
tpmC: 93826.9, efficiency: 729.6%
[Summary] Q1     - Count: 11, Sum(ms): 42738.2, Avg(ms): 3885.3
[Summary] Q10    - Count: 11, Sum(ms): 440370.3, Avg(ms): 40034.3
[Summary] Q11    - Count: 11, Sum(ms): 44208.6, Avg(ms): 4018.7
[Summary] Q12    - Count: 11, Sum(ms): 105320.3, Avg(ms): 9574.6
[Summary] Q13    - Count: 11, Sum(ms): 19199.5, Avg(ms): 1745.4
[Summary] Q14    - Count: 11, Sum(ms): 84582.1, Avg(ms): 7689.5
[Summary] Q15    - Count: 11, Sum(ms): 271944.8, Avg(ms): 24722.8
[Summary] Q16    - Count: 11, Sum(ms): 183894.9, Avg(ms): 16718.1
[Summary] Q17    - Count: 11, Sum(ms): 89018.9, Avg(ms): 8092.7
[Summary] Q18    - Count: 10, Sum(ms): 767814.5, Avg(ms): 76777.6
[Summary] Q19    - Count: 10, Sum(ms): 17099.1, Avg(ms): 1709.8
[Summary] Q2     - Count: 11, Sum(ms): 53513.6, Avg(ms): 4865.2
[Summary] Q20    - Count: 10, Sum(ms): 73717.7, Avg(ms): 7372.1
[Summary] Q21    - Count: 10, Sum(ms): 166001.4, Avg(ms): 16601.1
[Summary] Q22    - Count: 10, Sum(ms): 48268.4, Avg(ms): 4827.7
[Summary] Q3     - Count: 11, Sum(ms): 31110.1, Avg(ms): 2828.5
[Summary] Q4     - Count: 11, Sum(ms): 83814.2, Avg(ms): 7619.3
[Summary] Q5     - Count: 11, Sum(ms): 368301.0, Avg(ms): 33483.5
[Summary] Q6     - Count: 11, Sum(ms): 61702.5, Avg(ms): 5608.9
[Summary] Q7     - Count: 11, Sum(ms): 158928.2, Avg(ms): 14446.3

After the test is finished, you can execute the tiup bench tpcc -H 172.16.5.140 -P 4000 -D tpcc --warehouses 1000 check command to validate the data correctness.

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