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aeron 1.37 pingpong(c) test gets a slightly higher latency number compare to 1.31.2

I've been using real-logic/Aeron(c/c++ version) for almost 2 years.
Recently I was thinking of upgrading Aeron from 1.31.2 to 1.37.0.
But after run the pingpong test, I got a slightly higher latency number(around 0.1 us rtt) from 1.37.0. I ran the Ping on one server, and Pong on another server. I tested version by version (from 1.31.2 to 1.37.0). all the hardware and how I ran the pingpong are exactly the same, the only differences is the Aeron version. Here are the latency number(warmup 10,000, message 1,000,000):

  • 1.31.2 -> 7.4452 mean us rtt
  • 1.32.0 -> 7.4886 mean us rtt
  • 1.33.0 -> 7.5054 mean us rtt
  • 1.34.0 -> 7.5145 mean us rtt
  • 1.35.0 -> 7.5459 mean us rtt
  • 1.36.0 -> 7.5297 mean us rtt
  • 1.37.0 -> 7.5462 mean us rtt

Anybody knows if I did something wrong, or has anyone experienced the same thing? is it possible to upgrade the version to 1.37.0 and keep latency number as good as 1.31.2?

Solution

  • Aeron 1.38.2 has some significant changes which improve the performance.