Vert.x virtual thread benchmark

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Vert.x virtual thread TFB benchmark

• blue : vertx 4.3.4

• red : vertx 4.3.4 + async await

• orange : vertx 4.3.4 + async await using the event-loop thread as carrier thread

• plaintext performance look dramatic because this benchmark uses 16 level pipelining. The current implementation of vertx virtual thread is not optimized for this and will flush each request, whereas the default version will flush every 16 requests (after the buffer containtaing the 16 pipelined request has been processed).

• other benchmark simply shows that using virtual thread has a cost

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Is there updated benchmark using vertx 4.5 and virtual threads? If virtual thread does not bring performance improvement, is't encouraged to use it in vertx 4.5?