chibenwa opened a new pull request, #2149:
URL: https://github.com/apache/james-project/pull/2149
Backpressure results.
Set up:
```
channel.config().setWriteBufferWaterMark(new WriteBufferWaterMark(100 *
1024, 500 * 1014));
```
(100 KB low level watermark, 500 KB high level watermark) higher than the
defaults to fasten overall streaming.
Results:
Message size (bytes) | Count at which backpressure trigger | Total memory
loaded |
---------------------|-------------------------------------|---------------------|
4532 | NEVER | 2.3 MB
|
9032 | 349 | 3.2 MB
|
18032 | 176 | 3.2 MB
|
36032 | 86 | 3.1 MB
|
72032 | 44 | 3.2 MB
|
144032 | 22 | 3.2 MB
|
288032 | 11 | 3.2 MB
|
576032 | 5 | 2.9 MB
|
1152032 | 3 | 4.6 MB
|
2304032 | 2 (min) | 4.6 MB
|
4608032 | 2 | 9.2 MB
|
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