Christopher Faulet

Backported now, I'm closing. Thanks !

any news about this issue ?

I'm closing because of inactivity.

It seems to be fixed and backported as far as 2.4. So I'm closing.

With such configuration, if the server is detected as down, an error is immediately returned for every requests. With a load testing tool, this will result to an high CPU...

No problem. It is not obvious it is a bug or not. I may have wrong. I'm surprised your load is so high if you have several servers to load...

With a load testing tools, with only one server in the backends, I'm not surprised the load increases. Because HAProxy immediately returns an error, the request rate is much higher....

The request rate is a good metric to know if clients are retrying too quickly. But If the problem exists when there is no health checks, it is probably not...

At this stage, you can also get `show activity` output. The best is to execute the command when everything works fine and when the problem happens, 2 times separated by...

The CPU usage seems to be related to the queue size. It really seems to be a contention issue on the queues. Some improvements were brought with the 2.6. However,...