caiconghui commented on PR #11479:
URL: https://github.com/apache/doris/pull/11479#issuecomment-1204104383
> Is there any performance tests?
the main cost is EditLog write, I use thread.sleep(2) to Simulate editlog
write and here is the example for single thread
```
MetaIdGenerator idGenerator = new MetaIdGenerator(0);
int size = 50000;
long[] idList = new long[size];
long startTime = System.currentTimeMillis();
// for (int i = 0; i < size; i++) {
// idList[i] = idGenerator.getNextId();
// }
IdGeneratorBuffer idGeneratorBuffer =
idGenerator.getIdGeneratorBuffer(size);
for (int i = 0; i < size; ++i) {
idList[i] = idGeneratorBuffer.getNextId();
}
System.out.println("cost " + (System.currentTimeMillis() -
startTime));
```
cost is 123ms vs 4ms this example is for creating table on single thread
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