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## ClickHouse performance tests
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This directory contains `.xml` -files with performance tests for @akuzm tool.
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### How to write performance test
First of all you should check existing tests don't cover your case. If there are no such tests than you should write your own.
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You have to specify `preconditions` . It contains table names. Only `hits_100m_single` , `hits_10m_single` , `test.hits` are available in CI.
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You can use `substitions` , `create` , `fill` and `drop` queries to prepare test. You can find examples in this folder.
Take into account, that these tests will run in CI which consists of 56-cores and 512 RAM machines. Queries will be executed much faster than on local laptop.
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If your test continued more than 10 minutes, please, add tag `long` to have an opportunity to run all tests and skip long ones.
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### How to run performance test
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TODO @akuzm
### How to validate single test
```
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pip3 install clickhouse_driver scipy
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../../docker/test/performance-comparison/perf.py --runs 1 insert_parallel.xml
```
