how can I minimize the runtime overhead of the race detector

1. Use the `-race` Flag Only for Specific Tests:
- Run the race detector only for specific tests that are known to exercise concurrent code paths.
- This can help reduce the overhead of the race detector for tests that do not involve concurrency.

2. Use the `GORACE` Environment Variable:
- Set the `GORACE` environment variable to control the behavior of the race detector.
- For example, you can set `GORACE` to `log_path` to log the race detector output to a file instead of the console.

3. Use the `log_path` Option:
- Use the `log_path` option to log the race detector output to a file instead of the console.
- This can help reduce the overhead of the race detector by avoiding the need to print the output to the console.

4. Use the `log_level` Option:
- Use the `log_level` option to control the level of detail in the race detector output.
- For example, you can set `log_level` to `error` to only log errors and warnings.

5. Use the `log_format` Option:
- Use the `log_format` option to control the format of the race detector output.
- For example, you can set `log_format` to `json` to log the output in JSON format.

6. Use the `race_detector` Option:
- Use the `race_detector` option to control the behavior of the race detector.
- For example, you can set `race_detector` to `off` to disable the race detector.

7. Use the `race_detector_options` Option:
- Use the `race_detector_options` option to control the behavior of the race detector.
- For example, you can set `race_detector_options` to `--log-path` to log the race detector output to a file.

8. Use the `race_detector_log_path` Option:
- Use the `race_detector_log_path` option to control the path where the race detector output is logged.
- For example, you can set `race_detector_log_path` to `/path/to/log` to log the output to a specific directory.

9. Use the `race_detector_log_level` Option:
- Use the `race_detector_log_level` option to control the level of detail in the race detector output.
- For example, you can set `race_detector_log_level` to `error` to only log errors and warnings.

10. Use the `race_detector_log_format` Option:
- Use the `race_detector_log_format` option to control the format of the race detector output.
- For example, you can set `race_detector_log_format` to `json` to log the output in JSON format.

Here is an example of how to use the `GORACE` environment variable to control the behavior of the race detector:

go
GORACE="log_path=/path/to/log log_level=error" go test -race mypkg

This command will run the race detector for the `mypkg` package, logging the output to `/path/to/log` and only logging errors and warnings.