Data Migration Specification
Last updated:2025-05-13 15:39:52
Parameter Description
When purchasing a DTS task, users need to select the specification of the task. Different specifications correspond to different transfer performances. Transfer performance is represented by RPS.
RPS represents the number of rows per second that DTS incrementally migrates from the source database to the target database. For example, if 2000 rows of data are incrementally migrated from the source database to the target database per second, then the RPS is 2000.
Specification
The following specifications are available for the data migration link.
Note：
The RPS (Requests Per Second) may be influenced by several factors including the configuration of the source database, network latency, and the complexity of the data in the source database. The following RPS performance reference for DTS (Data Transfer Service) is based on a benchmark of 1KB per data record. Utilizing larger data records in actual scenarios may result in a decrease in RPS.
Specification | Performance Limit (RPS) |
small | 2000 |
medium | 5000 |
large | 6000 |
xlarge | 7000 |
2xlarge | 11000 |
Test Model
Test procedure: Create an incremental migration task between two TencentDB MySQL instances, conduct stress testing on the source database MySQL, and monitor the performance of incremental data migration.
Instance | MySQL Instance Configuration | Reference Limit Performance |
Source Database | Instance Specifications: 16-core 32000 MB Memory: 200 GB | Maximum QPS: 12000 Maximum IOPS: 32000 |
Target Database | Instance Specifications: 16-core 32000 MB Memory: 200 GB | Maximum QPS: 12000
Maximum IOPS: 32000 |
Test Model:
Number of test tables is 20. Each table has about 2 million records. Each record is about 1 KB.
All test tables have a primary key.
Each Transaction generally contains two DML operations, one is COMMIT, with the ratio of INSERT, UPDATE, DELETE being 1:1:1.
Note：
The test results in this section are based on a benchmark of 1KB per data record. In practical applications, larger data records may result in a decrease in Requests Per Second (RPS).
Test Results
After stress testing the small, medium, and large specifications, the results show that the RPS provided by DTS can be achieved under all specifications. Even in scenarios with the maximum network latency, the RPS performance can reach the upper limit in cross-region (China to global) migration results.
Migration Region Type | Maximum Network Latency | Minimum Network Latency | Specification | RPS |
Intra-region (China): Guangzhou > Guangzhou | 3.46ms | 2.14ms | small | 2000 |
| 2.51ms | 2.21ms | medium | 5000 |
| 10.1ms | 2.20ms | large | 6000 |
Cross-region (China): Guangzhou > Beijing | 37.6ms | 33ms | small | 2000 |
| 68.2ms | 33.2ms | medium | 5000 |
| 48.2ms | 36.4ms | large | 6000 |
Intra-region (Global): Singapore > Singapore | 2.31ms | 240μs | small | 2000 |
| 2.45ms | 273μs | medium | 5000 |
| 2.11ms | 241μs | large | 6000 |
Cross-region (global): Singapore > Silicon Valley | 200ms | 174ms | small | 2000 |
| 201ms | 175ms | medium | 5000 |
| 204ms | 175ms | large | 6000 |
Cross-region (China to global): Guangzhou > Silicon Valley | 255ms | 162ms | small | 2000 |
| 309ms | 151ms | medium | 5000 |
| 174ms | 152ms | large | 6000 |
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