About CPU usage (no replies)

Hello,

I have a haproxy-1.5.11 with a single frontend passing requests to a single backend in TCP mode (sample config).
Application establishes several long-living tcp connections and sends a lot of small requests over them.

In my test case I have 2 simultaneous TCP connections producing about 3 MB/sec, 20 kpps input (as shown by netstat on backend machine) and approximately the same output.

haproxy process consumes about 20% of CPU core (I have a machine with 2 Intel Xeon E5-2650 v2 @ 2.60GHz).

In my understanding such CPU usage is rather high for the relatively low load.

I tried both FreeBSD and Linux and see similar results (I am interested in FreeBSD though).

Anything obvious I can tune?

Thanks.